Dell™ OptiPlex™ 755 User's Guide Mini Tower Computer Desktop Computer Small Form Factor Computer Ultra Small Form Factor Computer
Back to Contents Page Advanced Features User's Guide LegacySelect Technology Control System Setup Manageability Booting to a USB Device Physical Security Jumper Settings Trusted Platform Module (TPM) Clearing Forgotten Passwords Security Management Software Clearing CMOS Settings Computer Tracking Software Hyperthreading and Multi-Core Technology About Smart Cards and Fingerprint Readers Power Management for Windows XP and Windows Vista Password Protection A
iAMT Features Basic Functionality l Ability to discover, track, and inventory assets in the presence or absence of the operating systems. The computer must have the power cable connected and must be connected to the network. l Ability to power on and power off the computer remotely, whatever the state of the operating system. Advanced Functionality NOTE: Additional management software and purchasing options are required for some of the following features.
Contain only the setup.bin file l NOTE: The key should not be bootable. To provision AMT using a USB key, plug the USB key into a USB port prior to boot. During POST, the BIOS displays a message stating that the computer is being provisioned. Alert Standard Format ASF is a DMTF management standard that specifies "pre-operating system" or "operating system-absent" alerting techniques.
l Monitor the status of your computer, such as listening for thermal alerts from temperature probes or hard drive failure alerts from storage devices. l Change the state of your computer by updating its BIOS, configuring BIOS settings, or shutting it down remotely. With Dell Client Manager installed on a console and its client software installed on client computers, you have a managed computer. For information about DCM, see the Dell Support website at support.dell.com.
NOTE: On the ultra small form factor computer, the security cable slot is located on the back of the computer (see Back View). NOTE: Before you purchase an antitheft device, make sure that it works with the security cable slot on your computer. Antitheft devices usually include a segment of metal-stranded cable with an attached locking device and key. The documentation that comes with the device contains instructions for installing it.
About Smart Cards and Fingerprint Readers NOTE: The smart card feature or fingerprint reader may not be available on your computer. Smart cards are portable credit-card shaped devices with internal integrated circuits. The top surface of the smart card usually contains an embedded processor under the gold contact pad. The combination of the small size and integrated circuits make smart cards valuable tools for security, data storage, and special programs.
Typing Your System Password When you start or restart your computer, the following prompt appears on the screen. If Password Status is set to Locked: Type the password and press . If you have assigned an administrator password, the computer accepts your administrator password as an alternate system password. If you type a wrong or incomplete system password, the following message appears on the screen: ** Incorrect password.
3. Type and then verify the password. After you verify the password, the Admin Password setting changes to Set. The next time you enter system setup, the computer prompts you for the administrator password. 4. Exit system setup. A change to Admin Password becomes effective immediately (no need to restart the computer). Operating Your Computer With an Administrator Password Enabled When you enter system setup, the Admin Password option is highlighted, prompting you to type the password.
options list, active options field, and key functions. Options List — This field appears on the left side of the system setup window. The field is a scrollable list containing features that define the configuration of your computer, including installed hardware, power conservation, and security features. Option Field — This field contains information about each option. In this field you can view your current settings and make changes to your settings.
l l AHCI ATA This setting determines whether integrated drive errors are reported or not during computer start-up. SMART Reporting (Off default) Onboard Devices Integrated NIC Enables or disables the integrated NIC controller. Settings are On, Off, or On w/ PXE. When the On w/ PXE setting is active, if a boot routine is not available from the network server, the computer attempts to boot from the next device in the boot sequence list.
Trusted Execution Specifies whether a Measured Virtual Machine Monitor (MVMM) can use additional hardware capabilities provided by Intel Trusted Execution Technology. Default is Off. Virtual Appliance Specifies whether a Virtual Appliance can use the additional hardware capabilities provided by Intel Embedded Information Technology. Default is Off. VA Config Lock Specifies whether the Virtual Appliance ACPI Configuration Interface is locked or unlocked.
AC Recovery Determines how the computer responds when AC power is re-applied after a power loss. Off commands the computer to stay off when the power is re-applied. You must press the front-panel power button before the computer turns on. On commands the computer to turn on when the power is re-applied. Last commands the computer to return to the last power state the computer was in just before it was turned off. (Off default) Auto Power Sets the computer to automatically turn on.
l Onboard SATA Hard Drive — The computer attempts to boot from the primary serial ATA hard drive. If no operating system is on the drive, the computer generates an error message. l Onboard or USB CD-ROM Drive — The computer attempts to boot from the CD drive. If no CD is in the drive, or if the CD has no operating system, the computer generates an error message. l Onboard Network Controller — The computer attempts to boot from the network controller.
Floppy Drive 1. In system setup, set the Diskette Drive option to USB. 2. Save and exit system setup. 3. Connect the USB floppy drive, insert a bootable floppy, and re-boot the computer. Jumper Settings Mini Tower and Desktop Small Form Factor Ultra Small Form Factor Computer Jumper Setting Description PSWD Password features are enabled (default setting). Password features are disabled. RTCRST The real-time clock has not been reset.
jumpered unjumpered Clearing Forgotten Passwords CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: This process erases both the system and administrator passwords. 1. Follow the procedures in Before You Begin. 2. Remove the computer cover. 3. Locate the 2-pin password jumper (PSWD) on the system board, and remove the jumper to clear the password. See Jumper Settings. 4.
Hyperthreading and Multi-Core Technology Hyperthreading is an Intel technology that can enhance overall computer performance by allowing one physical processor to function as two logical processors that are capable of performing certain tasks simultaneously. Multi-core processors contain two or more physical computational units inside a single CPU package, thereby increasing computing efficiency and multi-tasking ability. Intel has implemented this technology in its Dual-Core and Quad-Core processors.
1. Click Start® Control Panel® Pick a category® Performance and Maintenance. 2. Under or pick a Control Panel icon, click Power Options. 3. Define your power settings on the Power Schemes tab, Advanced tab, and Hibernate tab as described in the following sections. Power Schemes Tab Each standard power setting is called a scheme. If you want to select one of the standard Windows schemes installed on your computer, choose a scheme from the Power schemes drop-down menu.
Hibernate Mode Hibernate mode conserves power by copying system data to a reserved area on the hard drive and then completely turning off the computer. When the computer exits hibernate mode, it returns to the same operating state it was in before entering hibernate mode. To manually enter hibernate mode in Windows Vista, click Start , click the arrow in the lower-right corner of the Start menu, and then click Hibernate.
RAID Level 1 Configuration RAID level 1 uses a data-redundancy storage technique known as mirroring to enhance data integrity. When data is written to the primary drive, the data is also duplicated, or mirrored, on the second drive in the configuration. If a drive failure occurs, subsequent read and write operations are directed to the surviving drive. A replacement drive can then be rebuilt using the data from the surviving drive.
5. Press the up- and down-arrow keys to select RAID0(Stripe), and press . NOTE: Select the stripe size closest to the size of the average file that you want to store on the RAID volume. If you do not know the average file size, choose 128 KB as your stripe size. 6. Press the up- and down-arrow keys to change the stripe size and press . 7. Select the desired capacity for the volume and press . The default value is the maximum available size. 8.
NOTE: If you do not see an Actions menu option, you have not yet set your computer to RAID-enabled mode (see Setting Your Computer to RAIDEnabled Mode). 3. On the Actions menu, select Create RAID Volume to launch the Create RAID Volume Wizard, and then click Next. 4. On the Select Volume Location screen, click the first hard drive you want to include in your RAID level 0 volume, and then click the right arrow. 5. Click a second hard drive.
1. Set your computer to RAID-enabled mode (see Setting Your Computer to RAID-Enabled Mode). 2. Click the Start button and point to All Programs® Intel(R) Matrix Storage Manager® Intel Matrix Storage Console to launch the Intel Storage Utility. NOTE: If you do not see an Actions menu option, you have not yet set your computer to RAID-enabled mode. 3. On the Actions menu, select Create RAID Volume From Existing Hard Drive to launch the Migration Wizard. 4.
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Back to Contents Page Battery User's Guide Replacing the Battery Replacing the Battery CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
1 system battery 2 positive side of battery connector 3 battery socket tab 4 battery socket 6. Install the new system battery. a. Support the battery connector by pressing down firmly on the positive side of the connector. b. Hold the battery with the "+" facing up, and slide it under the securing tabs at the positive side of the connector. c. Press the battery straight down into the connector until it snaps into place. 7. Replace the computer cover (see Replacing the Computer Cover). 8.
Back to Contents Page Before You Begin User's Guide Recommended Tools Before Working Inside Your Computer This chapter provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the following conditions exist: l You have performed the steps in Turning Off Your Computer and Before Working Inside Your Computer. l You have read the safety information in your Dell™ Product Information Guide.
2. Disconnect any telephone or telecommunication lines from the computer. 3. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board. 4. If applicable, remove the computer stand (for instructions, see the documentation that came with the stand) and the cable cover, if attached (see Cable Cover (Optional)).
Back to Contents Page Cleaning Your Computer User's Guide Computer, Keyboard, and Monitor Mouse Floppy Drive CDs and DVDs CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. Computer, Keyboard, and Monitor CAUTION: Before you clean your computer, disconnect the computer from the electrical outlet. Clean your computer with a soft cloth dampened with water.
Clean your floppy drive using a commercially available cleaning kit. These kits contain pretreated floppy disks to remove contaminants that accumulate during normal operation. CDs and DVDs If you notice problems, such as skipping, with the playback quality of your CDs or DVDs, try cleaning the discs. 1. Hold the disc by its outer edge. You can also touch the inside edge of the center hole. NOTICE: To avoid damaging the surface, do not wipe in a circular motion around the disc. 2.
Back to Contents Page Desktop Computer User's Guide About Your Desktop Computer Removing the Computer Cover Inside Your Computer Chassis Intrusion Switch Removing the Heat Sink Assembly System Board Components About Your Desktop Computer Front View 1 USB 2.0 connectors (2) Use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras, or for bootable USB devices (see System Setup for more information about booting to a USB device).
8 headphone connector Use the headphone connector to attach headphones and most kinds of speakers. 9 microphone connector Use the microphone connector to attach a microphone. 10 3.5-inch drive bay Can contain an optional floppy drive, second hard drive, or optional media card reader. 11 5.25-inch drive bay Can contain an optical drive. Insert a CD or DVD (if supported) into this drive.
l l 3 network adapter connector network and the computer. Yellow — A good connection exists between a 1-Gbps (or 1000Mbps) network and the computer. Off — The computer is not detecting a physical connection to the network. To attach your computer to a network or broadband device, connect one end of a network cable to either a network jack or your network or broadband device. Connect the other end of the network cable to the network adapter connector on the back panel of your computer.
1 security cable slot 2 cover release latch 3 padlock ring Inside Your Computer CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. NOTICE: Be careful when opening the computer cover to ensure that you do not accidentally disconnect cables from the system board.
NOTE: The chassis intrusion switch is standard on the ultra small form factor computer but is optional on mini tower, desktop, and small form factor computers; it may not be present on your computer. Removing the Chassis Intrusion Switch 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3.
1. Loosen the captive screw on each side of the heat sink assembly. CAUTION: Despite having a plastic shield, the heat sink assembly may be very hot during normal operation. Be sure that it has had sufficient time to cool before you touch it. 2. Rotate the heat sink assembly upward, and remove the assembly from the computer. Lay the heat sink down on its top.
7 front-panel connector (FRONTPANEL) 18 serial connector (SERIAL2) 8 power connector (POWER) 19 system board speaker (BEEP) 9 external SATA connector (eSATA) 20 aux power LED (aux_LED) 10 internal USB (INT_USB) 21 floppy connector (DSKT) 11 RTC reset jumper (RTCRST) 22 fan connector (FAN_CPU) Back to Contents Page
Dell™ OptiPlex™ 755 User's Guide Desktop Computer About Your Computer Finding Information Desktop Computer Desktop Computer Specifications Advanced Features Installing Your Computer in an Enclosure Cleaning Your Computer Microsoft® Windows® Features Troubleshooting Getting Help Glossary Warranty FCC Notices (U.S.
Back to Contents Page User's Guide Cards Cards CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
4. If you are installing a card in an empty card connector on the system board, remove the filler bracket to create a card-slot opening at the back of the computer. Then continue with step 6. 5. If you are installing a card to replace one already installed in the computer, remove the installed card (see Removing a PCI Card). 6. Prepare the card for installation.
1 card fully seated 2 card not fully seated 3 bracket within slot 4 bracket caught outside of slot NOTE: If you are installing a PCI Express x16 card, ensure that the securing tab on the connector's release lever fits into the notch on the front end of the card. 9. Gently rotate the release tab downward to move the card-retention latch into place to secure the cards.
on the back panel of the computer. 14. Install any drivers required for the card as described in the card documentation. Removing a PCI Card 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Gently rotate upward the release tab on the card-retention latch. 1 card 4 card insert 2 card-retention latch 5 release tab 3 system board connector 4. 5. If necessary, disconnect any cables connected to the card.
8. Rotate the release tab downward to snap the card-retention latch into place. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. 9. Replace the computer cover (see Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on. 10. Uninstall the card's driver. See the documentation that came with the card for instructions. 11. If you removed a sound card: 12. a.
7. Press the release tab to raise the card-retention latch. 1 release tab 4 card-edge connector 2 card-retention latch 5 card connector 3 card 8. Insert the card firmly into the card connector on the riser-card cage. 9. Lower the card-retention latch and press it into place, securing the card(s) in the computer. 10. Replace the riser-card cage: a.
or line-in connectors on the back panel. 15. If you installed a network adapter card and want to turn off the integrated network adapter: a. Enter system setup, select Network Controller and change the setting to Off (see Entering System Setup). b. Connect the network cable to the network adapter card's connectors. Do not connect the network cable to the integrated network connector on the back panel of the computer.
1 riser-card cage 3 riser cards (2) 2 slots 4 system board connectors (2) 10. Replace the computer cover (see Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on. 11. Uninstall the card's driver. See the documentation that came with the card for instructions. 12. If you removed a sound card: 13. a. Enter system setup, select Audio Controller, and change the setting to On (see Entering System Setup). b.
6. 7. Before you close the card retention mechanism, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar. l The notch in the top of the card or filler bracket fits around the alignment guide. Secure the card(s) by closing the card retention latch and snapping it into place. NOTICE: Do not route card cables over the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment.
3. Gently lift the release tab on the card retention latch from the inside to pivot the latch open. Pivot the latch until it snaps into the open position. 4. Disconnect the PS/2 serial-port cable from the system board (see System Board Components). 5. Ease the PS/2 serial-port adapter bracket out of its retention slot. 6. If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening.
1 riser-card cage 2 handle 3 riser cards (2) 4. Gently lift the release tab on the card retention latch from the inside to pivot the latch open. Pivot the latch until it snaps into the open position. 5. If you are installing a new PS/2 serial port adapter, remove the filler bracket to create an empty card-slot opening. 6. If you are replacing a PS/2 adapter that is already installed in the computer, remove the adapter. 7. If necessary, disconnect any cables connected to the adapter.
1 riser-card cage 2 handle 3 riser cards (2) 4. Gently lift the release tab on the card retention latch from the inside to pivot the latch open. Pivot the latch until it snaps into the open position. 5. Disconnect the PS/2 serial-port cable from the system board (see System Board Components). 6. Grasp the PS/2 serial-port adapter bracket by its top corners, and ease it out of its connector. 7.
3. Mount the bracket into the desired card slot opening. 4. Plug the free end of the eSATA cable into the eSATA connector on the system board (see System Board Components). 5. Replace the computer cover (see Replacing the Computer Cover). 6. Boot your computer and enter system setup (see Entering System Setup). Use the esata option to enable the eSATA drive. Installing eSATA With a Riser 1. Remove the computer cover (see Removing the Computer Cover). 2.
5. Plug the free end of the eSATA cable into the eSATA connector on the system board. 6. Replace the riser. 1 riser-card cage 3 riser cards (2) 2 slots 4 system board connectors (2) 7. Replace the computer cover (see Replacing the Computer Cover). 8. Boot your computer and enter system setup (see Entering System Setup). Use the esata option to enable the eSATA drive.
Back to Contents Page User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. Removing the Processor 1.
3. Unpack the new processor, being careful not to touch the underside of the processor. NOTICE: You must position the processor correctly in the socket to avoid permanent damage to the processor and the computer when you turn on the computer. 4. If the release lever on the socket is not fully extended, move it to that position. 5. Orient the front and rear alignment-notches on the processor with the front and rear alignment- notches on the socket. 6.
1 heat sink assembly 2 heat-sink assembly bracket 3 captive screw housing (2) 13. Replace the computer cover (see Replacing the Computer Cover).
Back to Contents Page User's Guide Drives Drives Your computer supports: l One SATA (serial ATA) hard drive l One 3.5-inch drive bay (to support a floppy drive, media card reader, or optional second SATA hard drive) l One SATA optical drive l One eSATA drive (with optional bracket) NOTE: Due to the limited number of drive bays and controllers on this computer, you will not be able to connect all supported devices at once.
1 data interface cable connector 2 data interface connector Power Cable Connectors 1 power cable 2 power input connector Connecting and Disconnecting Drive Cables When removing a cable with a pull-tab, grasp the colored pull-tab and pull until the connector detaches. When connecting and disconnecting a cable without a pull tab, hold the cable by the black connector at each end. Drive Inserts Your computer will come with a plastic insert with shoulder screws and a metal insert.
1 metal insert 5. Press the release tabs on the plastic insert and press from behind to remove. 1 shoulder screws 2 plastic drive insert Replacing Drive Inserts If you are removing a drive, and need to replace the inserts: 1. Place the plastic insert over the opening and press the insert tab down until the plastic insert snaps into place. 2. Slide the metal bracket toward the front of the computer and click into place. 3. Replace the computer cover (see Replacing the Computer Cover).
NOTICE: Do not pull the drive out of the computer by the drive cables. Doing so may cause damage to cables and the cable connectors. 3. Pull up on the drive-release latch and slide the drive towards the back of the computer. Then, lift up to remove the drive from the computer. 1 drive release latch 2 optical drive 4. 5. Disconnect the power and data cables from the back of the drive.
7. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 8. Replace the computer cover (see Replacing the Computer Cover). 9. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See System Setup for more information. 10. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics).
1 drive release latch 2 floppy drive 5. 6. Disconnect the power and data cables from the back of the floppy drive. If you are not replacing the floppy drive or media card reader at this time, install the floppy drive inserts (see Replacing Drive Inserts). Contact Dell if you need a drive bay insert. Installing a Floppy Drive 1. If you are installing a new floppy drive a. Remove the drive inserts (see Removing Drive Inserts). b.
4. Attach the power and data cables to the floppy drive. 5. Align the shoulder screws with the screw guides, and slide the drive into the bay until it clicks into place. 1 power cable 2 slot verification number 6. Replace the optical drive (see Optical Drive). 7. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 8. Replace the computer cover (see Replacing the Computer Cover). 9.
1 drive release latch 2 media card reader 5. 6. Disconnect the cable from the back of the media card reader and from the system board. If you are not replacing the media card reader at this time, install the 3.5 inch drive insert (see Replacing Drive Inserts). Contact Dell if you need a drive bay insert. Installing a Media Card Reader 1. If you are installing a new drive or media card reader: a. Remove the drive inserts (see Removing Drive Inserts). b.
1 drive insert 2. If you are replacing an existing media card reader: Remove the four shoulder screws from the existing media card reader. 3. Insert the four shoulder screws into the sides of the new media card reader and tighten them. 4. Attach the cable to the media card reader and system board connector. 5. Align the shoulder screws with the screw guides, and slide the media card reader into the bay until it clicks into place.
1 power cable 2 slot verification number 6. Replace the optical drive (see Optical Drive). 7. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 8. Replace the computer cover (see Replacing the Computer Cover). 9. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics).
1 securing clips (2) 2 hard drive Installing a Hard Drive 1. Check the documentation for the drive to verify that it is configured for your computer. NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it. 2. 3. Unpack the replacement hard drive, and prepare it for installation.
5. Connect the power and data cables to the drive. 6. Locate the correct slot for the drive, and slide the drive into the bay until it clicks into place. 1 hard drive 2 slot verification number 7. Replace the floppy drive and optical drive. 8. Check all connectors to be certain that they are properly cabled and firmly seated. 9. Replace the computer cover (see Replacing the Computer Cover). 10.
3. Remove the computer cover (see Removing the Computer Cover). 4. Remove the optical drive (if your configuration has one). See Removing an Optical Drive. 5. Disconnect cable from the existing hard drive. 6. Remove the existing hard drive from the computer (see Removing a Hard Drive). 7. Remove screws from the existing hard drive and install them on the new hard drive. 8. Carefully slide the new hard drive into the upper bay until it clicks into place. 9.
16. Partition and logically format your drive. NOTE: For instructions, see the documentation that came with your operating system. 17. Test the hard drive by running the Dell Diagnostics (see Dell Diagnostics). 18. Install your operating system on the hard drive. NOTE: For instructions, see the documentation that came with your operating system.
Back to Contents Page User's Guide I/O Panel I/O Panel Removing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover. NOTE: Note the routing of all cables before disconnecting them, so that you can re route them correctly when installing the new I/O panel. 1.
NOTE: Use the guides on the I/O panel bracket to help position the I/O panel in place and use the notch on the I/O panel bracket to help seat the card.
Back to Contents Page User's Guide Power Supply Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1.
11. Reconnect the DC power cables. 12. Replace the optical drive (see Optical Drive). 13. Connect the AC power cable to the connector. 14. Replace the computer cover (see Replacing the Computer Cover). DC Power Connectors DC Power Connector P1 Pin Number Signal name 18-AWG Wire 1 +3.3 VDC Orange 2 +3.
21 +5 VDC Red 22 +5 VDC Red 23 +5 VDC Red 24 GND Black *Use 22-AWG wire instead of 18-AWG wire.
Pin Number Signal name 18-AWG Wire 1 +3.
Back to Contents Page User's Guide Speakers Speakers Installing a Speaker CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1.
5. Replace the computer cover. 6. Turn on power to the computer.
Back to Contents Page Desktop Computer Specifications User's Guide Microprocessor Microprocessor type The following are supported: l l l Internal cache Intel® Core™2 Intel vPro™ Intel Celeron® L1: up to 128 KB; L2: up to 8 MB (depending on your processor) Memory Type 667-MHz or 800-MHz DDR2 SDRAM Memory connectors 4 Memory modules supported 512 MB, 1 GB, or 2 GB non-ECC Minimum memory dual-channel: 1 GB; single-channel: 512 MB NOTE: 512 MB is the minimum shipping configuration.
supporting one device each Expansion Bus Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed SATA: 1.5 Gbps and 3.0 Gbps USB: 480 Mbps Cards standard configuration supports low-profile cards only; with optional riser-card cage, computer supports halflength, full-height cards. Full-height cards are supported in the 6.875-inch riser card cage.
Serial 9-pin connector; 16550C-compatible Parallel 25-pin connector (bidirectional) Video 15-pin VGA connector Network adapter RJ45 connector Optional PS/2 with secondary serial port adapter two 6-pin mini-DINs USB two front-panel and six back panel USB 2.
Wattage 280 W Heat dissipation 955 BTU/hr NOTE: Heat dissipation is calculated based upon the power supply rating. Voltage Backup battery manual selection power supplies — 90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz 3-V CR2032 lithium coin cell Physical Height 11.4 cm (4.5 inches) Width 39.9 cm (15.7 inches) Depth 35.3 cm (13.9 inches) Weight 10.
Back to Contents Page Installing Your Computer in an Enclosure User's Guide Installing your computer in an enclosure can restrict the airflow and impact your computer's performance, possibly causing it to overheat. Use the following guidelines when installing your computer in an enclosure. NOTICE: The operating temperature specifications indicated in this guide reflect the maximum ambient operating temperature.
l Do not install your computer in an enclosure that does not allow airflow. Restricting the airflow impacts your computer's performance, possibly causing it to overheat.
Back to Contents Page FCC Notices (U.S. Only) User's Guide FCC Class B This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. This device complies with Part 15 of the FCC Rules.
Back to Contents Page Finding Information User's Guide NOTE: Some features or media may be optional and may not ship with your computer. Some features or media may not be available in certain countries. NOTE: Additional information may ship with your computer.
1. 2. l l Service Tag and Express Service Code Microsoft Windows License Label Click Start or ® Help and Support® Dell User and System Guides® System Guides. Click the User's Guide for your computer. Service Tag and Microsoft® Windows® License These labels are located on your computer. l l Use the Service Tag to identify your computer when you use support.dell.com or contact support. Enter the Express Service Code to direct your call when contacting support.
NOTE: The Operating System media may be optional and may not ship with your computer. The operating system is already installed on your computer. To reinstall your operating system, use the Operating System media. See Reinstalling Windows XP or Windows Vista. After you reinstall your operating system, use the Drivers and Utilities media to reinstall drivers for the devices that came with your computer. Your operating system product key label is located on your computer.
Back to Contents Page Getting Help User's Guide Obtaining Assistance Problems With Your Order Product Information Returning Items for Warranty Repair or Credit Before You Call Contacting Dell Obtaining Assistance CAUTION: If you need to remove the computer covers, first disconnect the computer power and modem cables from all electrical outlets. 1. Complete the procedures in Troubleshooting. 2. Run the Dell Diagnostics (see Dell Diagnostics). 3.
la-techsupport@dell.com (Latin America and Caribbean countries only) apsupport@dell.com (Asian/Pacific countries only) support.jp.dell.com (Japan only) support.euro.dell.com (Europe only) l Electronic Quote Service apmarketing@dell.com (Asian/Pacific countries only) sales_canada@dell.com (Canada only) AutoTech Service Dell's automated support service—AutoTech—provides recorded answers to the questions most frequently asked by Dell customers about their portable and desktop computers.
Returns that are missing any of the preceding requirements will be refused at Dell's receiving dock and returned to you. Before You Call NOTE: Have your Express Service Code ready when you call. The code helps Dell's automated-support telephone system direct your call more efficiently. You may also be asked for your Service Tag (located on the back or bottom of your computer). Remember to fill out the Diagnostics Checklist (see Diagnostics Checklist).
Back to Contents Page Glossary User's Guide Terms in this Glossary are provided for informational purposes only and may or may not describe features included with your particular computer. A AC — alternating current — The form of electricity that powers your computer when you plug the AC adapter power cable in to an electrical outlet.
CD-RW — CD rewritable — A rewritable version of a CD. Data can be written to a CD-RW disc, and then erased and written over (rewritten). CD-RW drive — A drive that can read CDs and write to CD-RW (rewritable CDs) and CD-R (recordable CDs) discs. You can write to CD-RW discs multiple times, but you can write to CD-R discs only once. CD-RW/DVD drive — A drive, sometimes referred to as a combo drive, that can read CDs and DVDs and write to CD-RW (rewritable CDs) and CD-R (recordable CDs) discs.
E ECC — error checking and correction — A type of memory that includes special circuitry for testing the accuracy of data as it passes in and out of memory. ECP — extended capabilities port — A parallel connector design that provides improved bidirectional data transmission. Similar to EPP, ECP uses direct memory access to transfer data and often improves performance. EIDE — enhanced integrated device electronics — An improved version of the IDE interface for hard drives and CD drives.
HTTP — hypertext transfer protocol — A protocol for exchanging files between computers connected to the Internet. Hyperthreading — hyperthreading is an Intel technology that can enhance overall computer performance by allowing one physical processor to function as two logical processors, capable of performing certain tasks simultaneously. Hz — hertz — A unit of frequency measurement that equals 1 cycle per second.
memory — A temporary data storage area inside your computer. Because the data in memory is not permanent, it is recommended that you frequently save your files while you are working on them, and always save your files before you shut down the computer. Your computer can contain several different forms of memory, such as RAM, ROM, and video memory. Frequently, the word memory is used as a synonym for RAM. memory address — A specific location where data is temporarily stored in RAM.
processor — A computer chip that interprets and executes program instructions. Sometimes the processor is referred to as the CPU (central processing unit). PS/2 — personal system/2 — A type of connector for attaching a PS/2-compatible keyboard, mouse, or keypad. PXE — pre-boot execution environment — A WfM (Wired for Management) standard that allows networked computers that do not have an operating system to be configured and started remotely.
surge protectors — Prevent voltage spikes, such as those that may occur during an electrical storm, from entering the computer through the electrical outlet. Surge protectors do not protect against lightning strikes or against brownouts, which occur when the voltage drops more than 20 percent below the normal AC-line voltage level. Network connections cannot be protected by surge protectors. Always disconnect the network cable from the network connector during electrical storms.
W W — watt — The measurement of electrical power. One W is 1 ampere of current flowing at 1 volt. WHr — watt-hour — A unit of measure commonly used to indicate the approximate capacity of a battery. For example, a 66-WHr battery can supply 66 W of power for 1 hour or 33 W for 2 hours. wallpaper — The background pattern or picture on the Windows desktop. Change your wallpaper through the Windows Control Panel. You can also scan in your favorite picture and make it wallpaper.
Back to Contents Page Memory User's Guide You can increase your computer memory by installing memory modules on the system board. Your computer supports DDR2 memory. For additional information on the type of memory supported by your computer, see the appropriate specifications for your system in this book. DDR2 Memory Overview l When installed in pairs, DDR2 memory modules should be of matched memory size and speed.
64-bit operating system, your computer will support a maximum of 8 GB (2-GB DIMMs in each of the four slots) of memory. Installing Memory CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge and damage to internal components, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface on the computer chassis. 1.
8. When the message appears stating that memory size has changed, press to continue. 9. Log on to your computer. 10. Right-click the My Computer icon on your Windows desktop and click Properties. 11. Click the General tab. 12. To verify that the memory is installed correctly, check the amount of memory (RAM) listed. Removing Memory CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Dell™ OptiPlex™ 755 User's Guide Mini Tower Computer About Your Computer Finding Information Mini Tower Computer Mini Tower Computer Specifications Advanced Features Installing Your Computer in an Enclosure Cleaning Your Computer Microsoft® Windows® Features Troubleshooting Getting Help Glossary Warranty FCC Notices (U.S.
Back to Contents Page User's Guide Cards Cards CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
1 card retention latch 2 alignment guide 3 card 4 card-edge connector 5 card connector 6 release tab 4. If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 5. 5. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card. 6. 7. If your card includes a card retention bar, remove the bar.
1 card fully seated 2 card not fully seated 3 bracket within slot 4 bracket caught outside of slot 10. 11. Before you lower the card retention mechanism, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar. l The notch in the top of the card or filler bracket fits around the alignment guide. Secure the card(s) by closing the card retention latch and snapping it into place. NOTICE: Do not route card cables over or behind the cards.
1 card retention latch 2 alignment guide 3 card 4 card-edge connector 5 card connector 6 release tab 4. If necessary, disconnect any cables connected to the card. 5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets keep dust and dirt out of your computer and maintains the airflow that cools your computer.
1 card retention latch 4. 2 alignment guide Remove the filler bracket (if applicable). NOTE: See the documentation that came with the PS/2 serial port adapter for information on configuring the adapter, making internal connections, or customizing it for your computer. 5. Align the PS/2 serial-port adapter bracket in the retention slot and press down firmly. Ensure that the adapter is fully seated in the slot.
NOTE: See the documentation for the PS/2 serial port adapter for information about the cable connections. 8. Replace the computer cover (see Replacing the Computer Cover). Removing a PS/2 Serial Port Adapter 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Gently push the release tab on the card retention latch from the inside to pivot the latch open. The latch will remain in the open position.
8. 9. 10. Before you close the card retention mechanism, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar. l The notch in the top of the card or filler bracket fits around the alignment guide. Secure the card(s) by closing the card retention latch and snapping it into place. Replace the computer cover (seeReplacing the Computer Cover).
Back to Contents Page User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. Removing the Processor 1.
1 center cover latch 2 processor cover 3 processor 4 socket 6. 5 release lever Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor. Installing the Processor NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer. NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. 1.
7 front alignment-notch 8 socket and processor pin-1 indicator 9 rear alignment-notch NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor. 7. Set the processor lightly in the socket and ensure that the processor is positioned correctly. 8. When the processor is fully seated in the socket, close the processor cover.
Back to Contents Page User's Guide Drives Drives Your computer supports: 1 l Two SATA (Serial ATA) hard drives l One 3.5-inch floppy drive or media card reader l Two SATA optical drives l One eSATA drive (with optional bracket) optical drive 2 3.5-inch drive or media card reader 3 hard drive General Drive Installation Guidelines SATA connectors on the system board are labeled SATA0, SATA1, SATA2, and SATA3.
1 data interface cable connector 2 data interface connector Power Cable Connectors 1 power cable 2 power input connector Connecting and Disconnecting Drive Cables When removing a cable with a pull-tab, grasp the colored pull-tab and pull until the connector detaches. When connecting and disconnecting a cable without a pull tab, hold the cable by the black connector at each end.
1 data cable 6. 1 2 hard drive system board connector 3 power cable Press in on the blue release tabs on each side of the drive and slide the drive up and out of the computer. hard drive 2 release tabs (2) Installing a Hard Drive 1. Unpack the replacement hard drive, and prepare it for installation. 2. Check the documentation for the drive to verify that it is configured for your computer. 3.
1 hard drive 5. 2 hard drive bracket 3 pins Gently spread the sides of the drive bracket and slide the hard drive into the bracket, aligning the drive with the bracket pins, until the drive clicks into place. 6. Carefully slide the hard drive into the drive bay until it clicks into place. 7. Connect the power and data cables to the drive. 8. Ensure that the data cable is securely connected to the connector on the system board.
Adding a Second Hard Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it.
1 data cable 9. 2 hard drive system board connector 3 power cable Replace the computer cover (see Replacing the Computer Cover). 10. Enter system setup (see System Setup), and update the SATA port option under the Drives option list. 11. Exit system setup, and reboot the computer. 12. Partition and logically format your drive. See the documentation for your operating system for instructions. 13. Test the hard drive by running the Dell Diagnostics (see Dell Diagnostics). 14.
1 floppy drive 6. 2 drive release latch Grasp the sliding plate lever and slide it towards the bottom of the computer until the drive panel snaps open; while holding the lever in place, slide the drive out of the computer. Installing the Floppy Drive 1. 2. 3. 1 If you are replacing a floppy drive, remove the shoulder screws from the existing drive and attach the screws to the replacement drive. If you are installing a new floppy drive, remove the drive-panel insert for the 3.
1 data cable 2 power cable 3 floppy drive connector (DSKT) 5. Replace the computer cover (see Replacing the Computer Cover). 6. Enter system setup (see Entering System Setup), and use the Diskette Drive option to enable your new floppy drive. 7. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics).
5. Grasp the sliding plate lever and slide it towards the bottom of the computer until the drive panel snaps open; while holding the lever in place, slide the media card reader out of the computer. Installing the Media Card Reader 1. If you are replacing a media card reader, remove the shoulder screws from the existing drive and attach the screws to the replacement media card reader.
1 data/power cable 2 media card reader 5. Replace the computer cover (see Replacing the Computer Cover). 6. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics). Optical Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before replacing the cover.
5. Check the documentation that accompanied the drive to verify that the drive is configured for your computer. 6. Align the shoulder screws on the optical drive with the shoulder screw slots, and slide the drive into the bay until it clicks into place. 1 optical drive 7. 2 shoulder screws (3) 3 shoulder screw slots (2) Connect the power and data cables to the drive and to the system board.
Setup. 11. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics).
Back to Contents Page User's Guide I/O Panel I/O Panel Removing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover. NOTE: Note the routing of all cables as you remove them so that you can re-route them correctly when installing the new I/O panel. 1.
Back to Contents Page User's Guide Power Supply Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1.
10. Reconnect the DC power cables to the power supply. 11. Connect the AC power cable to the AC power connector. 12. Replace the computer cover (see Replacing the Computer Cover). DC Power Connectors DC Power Connector P1 Pin Number Signal name 18-AWG Wire 1 +3.3 VDC Orange 2 +3.3 VDC Orange 3 GND Black 4 +5 VDC Red 5 GND Black 6 +5 VDC Red 7 GND Black 8 PS_PWRGOOD Gray 9 P5AUX Purple 10 V_12P0_DIG White 11 V_12P0_DIG White 12 +3.
19 GND Black 20 NC NC 21 +5 VDC Red 22 +5 VDC Red 23 +5 VDC Red 24 GND Black *Optional wire. Use 22-AWG wire instead of 18-AWG wire. DC Power Connector P2 Pin Number Signal Name 18-AWG Wire 1 GND Black 2 GND Black 3 +12 VADC Yellow 4 +12 VADC Yellow DC Power Connectors P3, P5, P8, and P9 Pin Number Signal name 18-AWG Wire 1 +3.
Pin Number Signal name 18-AWG Wire 1 +12 VBDC White 2 GND Black 3 GND Black 4 +5 VDC Red Back to Contents Page
Back to Contents Page User's Guide Speakers Speakers Installing a Speaker CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1.
5. Replace the computer cover. 6. Turn on power to the computer.
Back to Contents Page Mini Tower Computer Specifications User's Guide Microprocessor Microprocessor type The following are supported: l l l Internal cache Intel® Core™2 Intel vPro™ Intel Celeron® L1: up to 128 KB; L2: up to 8 MB (depending on your processor) Memory Type 667-MHz or 800-MHz DDR2 SDRAM Memory connectors 4 Memory modules supported 512-MB, 1-GB, or 2-GB non-ECC Minimum memory dual-channel: 1 GB single-channel: 512 MB NOTE: 512 MB is the minimum shipping configuration.
Expansion Bus Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed PCI Express x1: 5 Gbps SATA: 1.5 Gbps and 3.
(during start-up only) or displays a boot device menu that allows the user to enter a device for a single boot (during start-up only) as well as options to run hard drive and system diagnostics displays the Management Engine BIOS Extension settings screen that allows you to modify the settings Controls and Lights Power control push button Power light green light — blinking green indicates sleep mode; solid green indicates power-on state.
Operating –15.2 to 3048 m (–50 to 10,000 ft) Storage –15.2 to 10,668 m (–50 to 35,000 ft) Airborne contaminant level Back to Contents Page G2 or lower as defined by ISA-S71.
Back to Contents Page Microsoft® Windows® Features User's Guide Transferring Information to a New Computer Setting Up a Home and Office Network Transferring Information to a New Computer You can use your operating system "wizards" to help you transfer files and other data from one computer to another—for example, from an old computer to a new computer. For instructions, see the following section that corresponds to the operating system that your computer is running.
After the information has been copied, the Completing the Collection Phase screen appears. 7. Click Finish. To transfer data to the new computer: 1. On the Now go to your old computer screen on the new computer, click Next. 2. On the Where are the files and settings? screen, select the method you chose for transferring your settings and files and click Next. The wizard reads the collected files and settings and applies them to your new computer.
NOTE: For more information about this procedure, search support.dell.com for document #154781 (What Are The Different Methods To Transfer Files From ® ® My Old Computer To My New Dell™ Computer Using the Microsoft Windows XP Operating System?). NOTE: Access to the Dell™ Knowledge Base document may not be available in certain countries. Microsoft Windows Vista® 1. Click the Windows Vista Start button, 2. In the User Account Control dialog box, click Continue.
5. Return to the Network Setup Wizard and follow the instructions on the screen. Windows Vista To make changes to your network setup in Microsoft® Windows Vista®: 1. Click the Windows Vista Start button, 2. Click Set up a connection or network. 3. Select the type of network connection you want to make and follow the instructions on the screen. 4. When finished, close the Network and Sharing Center. Back to Contents Page , and then click Network® Network and Sharing Center.
Back to Contents Page Replacing the Computer Cover User's Guide Mini-Tower, Desktop, and Small Form Factor Computers Ultra Small Form Factor Computers Mini-Tower, Desktop, and Small Form Factor Computers CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. 1. Ensure that all cables are connected, and fold cables out of the way.
1 release knob Back to Contents Page
Back to Contents Page User's Guide Cards Cards CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
4. If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 6. 5. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card. Then continue with step 6. 6. Prepare the card for installation. CAUTION: Some network adapters automatically start the computer when they are connected to a network.
Removing a PCI Card 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). NOTE: For PCI card locations, see System Board Components. 3. Gently lift the release tab on the card retention latch from the inside and pivot the latch open. 4. If necessary, disconnect any cables connected to the card. 5. Grasp the card by its top corners, and ease it out of its connector.
b. Connect the network cable to the integrated network connector on the back panel of the computer. PCI Express and DVI Cards Your computer supports one low-profile PCI Express x16 card. If you are replacing a PCI Express card with a different type of PCI Express card, remove the current driver for the card from the operating system. See the documentation that came with the card for information. Installing a PCI Express x16 Card or DVI Card 1. Follow the procedures in Before You Begin. 2.
1 card fully seated 2 card not fully seated 3 bracket within slot 4 bracket caught outside of slot NOTICE: Do not route card cables over the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment. 8. Connect any cables that should be attached to the card. 9. Before you close the card retention mechanism, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar.
6. While pressing the lever, pull the card up and out of the card connector. 1 PCI Express x16 card 2 lever 3 securing slot (not all cards) 4 securing tab 7. 5 PCI Express x16 card connector While pressing the lever, pull the removal pull tab up and remove the card out of the card connector. 1 PCI Express x16 DVI-card 2 removal pull tab 3 DVI card connector 4 lever 5 securing slot 6 securing tab 7 PCI Express x16 card connector 8.
To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. 14. If you removed a network-adapter card connector: a. Enter system setup, select Integrated NIC from the Onboard Devices group, and change the setting to On (see System Setup). b. Connect the network cable to the integrated network connector on the back panel of the computer.
NOTE: See the documentation for the PS/2 serial port adapter for information about the cable connections. 9. Replace the computer cover (see Replacing the Computer Cover. Removing a PS/2 Serial Port Adapter 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Gently lift the release tab on the card retention latch from the inside to pivot the latch open. Pivot the latch until it snaps into the open position. 4.
5. Replace the computer cover (see Replacing the Computer Cover). 6. Boot your computer and enter system setup (see Entering System Setup). Use the esata option to enable the eSATA drive.
Back to Contents Page User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. Removing the Processor 1.
1 center cover latch 2 processor cover 3 processor 4 socket 5 release lever NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. 6. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor. Installing the Processor NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.
1 processor cover 6 release lever 2 tab 7 front alignment-notch 3 processor 8 socket and processor pin-1 indicator 4 processor socket 9 rear alignment-notch 5 center cover latch NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor. 7. Set the processor lightly in the socket and ensure that the processor is positioned correctly. 8.
2 heat-sink assembly bracket 3 captive screw in housing (2) 13. Replace the computer cover (see Replacing the Computer Cover).
Back to Contents Page User's Guide Drives Drives Your computer supports: l One SATA (serial ATA) hard drive l One slimline floppy drive or media card reader l One SATA slimline optical drive l One eSATA drive 1 3.5-inch drive bay for optional floppy drive or media card reader 2 slimline optical drive 3 hard drive General Installation Guidelines SATA connectors on the system board are labeled SATA0 and SATA1.
Power Cable Connectors 1 power cable 2 power input connector Connecting and Disconnecting Drive Cables When removing an cable with a pull-tab, grasp the colored pull-tab and pull until the connector detaches. When connecting and disconnecting a SATA data cable, hold the cable by the black connector at each end. Hard Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
1 securing tabs (2) 2 hard drive 8. Disconnect the power and data cable from the drive. 9. Disconnect the hard drive fan cable from the system board. 1 power cable 2 SATA data cable Installing a Hard Drive 1. Check the documentation for the drive to verify that it is configured for your computer. NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it. 2. 3.
1 release tabs (2) 2 hard drive 3 hard drive bracket 4. Connect the hard drive fan cable to the system board. 5. Connect the power and data cables to the drive. 1 power cable 2 SATA data cable 6. Check all connectors to ensure that they are properly cabled and firmly seated. 7. Gently position the drive until it clicks into place. 1 release tabs (2) 2 hard drive 8. Replace the computer cover (see Replacing the Computer Cover). 9.
10. Turn on the computer. 11. Enter system setup, and update the SATA port option under the Drives option list (see Entering System Setup). 12. Exit system setup, and reboot the computer. 13. Partition and logically format your drive. NOTE: For instructions, see the documentation that came with your operating system. 14. Test the hard drive by running the Dell Diagnostics (see Dell Diagnostics). 15. Install your operating system on the hard drive.
Optical Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. Removing an Optical Drive 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3.
5. Connect the power and data cable to the drive. NOTE: The power and data cables for the slimline optical drive installed in your computer are configured in one of two ways as illustrated below. 1 optical drive 2 data cable 3 power cable 6. Gently position the drive until it clicks into place. 7. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 8. Replace the computer cover (see Replacing the Computer Cover). 9.
5. If you are removing a floppy drive, pull up the cable release tab to unlock it. 6. Gently lift the data cable from the floppy data cable edge connector. 1 cable release tab 2 data cable edge connector 7. Disconnect the data cable from the system board. 8. Pull up on the drive release latch and slide the floppy drive or media card reader towards the back of the computer. Then lift up to remove the drive. 9. Replace the computer cover (see Replacing the Computer Cover).
1 cable release tab 2 floppy drive data cable edge connector 5. Replace the optical drive (see Optical Drive). 6. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 7. Replace the computer cover (see Replacing the Computer Cover). 8. Enter system setup and use the Diskette Drive option to enable your new floppy drive (see System Setup).
1 media card reader data cable 8. 9. 10. Pull up on the drive release latch and slide the media card reader towards the back of the computer. Then lift up to remove the media card reader from the computer. Replace the hard drive (see Installing a Hard Drive). Replace the computer cover (see Replacing the Computer Cover). Replacing a Media Card Reader 1 media card reader 2 screws (3) 3 bracket rails (3) 1.
1 media card reader data cable 5. Replace the optical drive (see Optical Drive). 6. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 7. Replace the computer cover (see Replacing the Computer Cover). 8. See the documentation that came with the drive for instructions on installing any software required for drive operation. 9. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics).
Back to Contents Page User's Guide I/O Panel I/O Panel Removing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3.
9. Remove cables from the system board. 10. From inside the computer cover, remove the mounting screw that secures the I/O panel to the computer. 11. Ease the I/O panel back and forth to release its circular tabs from the two holes in the chassis that secure it. 12. Remove the I/O panel from the computer. Replacing the I/O Panel To replace the I/O panel, follow the removal procedures in the reverse order.
Back to Contents Page User's Guide Power Supply Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1.
12. Replace the floppy drive or media card reader (see Installing a Floppy Drive). 13. Replace the optical drive (see Installing an Optical Drive). 14. Replace the computer cover (see Replacing the Computer Cover). 15. Connect the AC power cable to the power supply AC power connector. NOTICE: To connect a network cable, plug the cable into the network wall jack and then plug it into the computer. 16. Connect your computer and devices to electrical outlets, and turn them on.
18 GND Black 19 GND Black 20 NC NC 21 VCC (+5V) Red 22 VCC (+5V) Red 23 VCC (+5V) Red 24 GND Black *Use 22-AWG wire instead of 18-AWG wire. DC Power Connector P2 Pin Number Signal Name 18-AWG Wire 1 GND Black 2 GND Black 3 +12 VDC Yellow 4 +12 VDC Yellow DC Power Connectors P3 Pin Number Signal Name 18-AWG Wire 1 +3.
Pin Number Signal Name 24-AWG Wire 1 NC NC 2 +5 VDC Red 3 +5 VDC Red 4 NC NC 5 GND Black 6 GND Black Back to Contents Page
Back to Contents Page User's Guide Speakers Speakers Installing a Speaker CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1.
5. Replace the computer cover. 6. Turn on power to the computer.
Back to Contents Page User's Guide Small Form Factor Computer Specifications Small Form Factor Computer Specifications Microprocessor Microprocessor type The following are supported: l l l Internal cache Intel® Core™2 Intel vPro™ Intel Celeron® L1: up to 128 KB; L2: up to 8 MB (depending on your processor) Memory Type 667-MHz or 800-MHz DDR2 SDRAM Memory connectors 4 Memory modules supported 512 MB, 1 GB, or 2 GB non-ECC Minimum memory dual-channel: 1 GB; single-channel: 512 MB Maxi
supporting one device each Expansion Bus Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MBs PCI Express x16: 8 GB/s bidirectional speed SATA: 1.5 Gbps and 3.
automatically starts the computer from the network environment specified by the remote boot environment (PXE) rather than from one of the devices in the system setup Boot Sequence option (during system startup only) or displays a boot device menu that allows the user to enter a device for a single boot (during system startup only) as well as options to run hard drive and system diagnostics displays the Management Engine BIOS Extension settings screen that allows you
Operating bottom half-sine pulse with a change in velocity of 20 inches/sec (50.8 cm/sec) Storage 27-G faired square wave with a velocity change of 200 inches/sec (508 cm/sec) Altitude: Operating –15.2 to 3048 m (–50 to 10,000 ft) Storage –15.2 to 10,668 m (–50 to 35,000 ft) Airborne contaminant level Back to Contents Page G2 or lower as defined by ISA-S71.
Dell™ OptiPlex™ 755 User's Guide Small Form Factor Computer About Your Computer Finding Information Small Form Factor Computer Small Form Factor Computer Specifications Advanced Features Installing Your Computer in an Enclosure Cleaning Your Computer Microsoft® Windows® Features Troubleshooting Getting Help Glossary Warranty FCC Notices (U.S.
Back to Contents Page Small Form Factor Computer User's Guide About Your Small Form Factor Computer Removing the Computer Cover Inside Your Computer Chassis Intrusion Switch System Board Components About Your Small Form Factor Computer Front View 1 USB 2.0 connectors (2) Use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras, or for bootable USB devices (see System Setup for more information about booting to a USB device).
8 headphone connector Use the headphone connector to attach headphones and most kinds of speakers. 9 microphone connector Use the microphone connector to attach a microphone. 10 3.5-inch drive bay Can contain an optional slimline floppy drive or optional media card reader. 11 5.25-inch drive bay Can contain a slimline optical drive. Insert a CD or DVD (if supported) into this drive.
3 network adapter connector To attach your computer to a network or broadband device, connect one end of a network cable to either a network jack or your network or broadband device. Connect the other end of the network cable to the network adapter connector on the back panel of your computer. A click indicates that the network cable has been securely attached. NOTE: Do not plug a telephone cable into the network connector. For VPro to work, the network cable must be connected to the onboard NIC.
1 security cable slot 2 cover release latch 3 computer cover Inside Your Computer CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. NOTICE: Be careful when opening the computer cover to ensure that you do not accidentally disconnect cables from the system board.
Removing the Chassis Intrusion Switch 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Remove the hard drive (see Removing a Hard Drive). 4. Disconnect the chassis intrusion switch cable from the system board by using two fingers to squeeze the release mechanism on one side of the connector as you pull to disconnect the cable connector. 5.
System Board Components 1 internal speaker connector (INT_SPKR) 12 RTC reset jumper (RTCRST) 2 processor connector (CPU) 13 intrusion switch connector (INTRUDER) 3 processor power connector (12VPOWER) 14 battery socket (BATTERY) 4 memory module connectors (DIMM_1, DIMM_2, DIMM_3, DIMM_4) 15 PCI Express x16 connector (SLOT1) 5 password jumper (PSWD) 16 PCI connector (SLOT2) 6 SATA connectors (SATA0, SATA1) 17 serial connector (SERIAL2) 7 front-panel connector (FRONTPANEL) 18 system boar
Back to Contents Page Replacing the System Board User's Guide Removing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra Small Form Factor Computers Replacing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra Small Form Factor Computers Removing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra Small Form Factor Computers 1. Follow the procedures in Before You Begin. 2. Remove the computer cover.
Desktop System Board Screws 1 desktop system board 2 screws (9) Small Form Factor System Board Screws 1 small form factor system board 2 screws (7) Ultra Small Form Factor System Board Screws
1 ultra small form factor system board 2 screws (10) Place the system board assembly that you just removed next to the replacement system board to ensure it is identical. Replacing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra Small Form Factor Computers 1. Gently align the board into the chassis and slide it toward the back of the computer. 2. Replace the screws on the system board. 3. Replace any components and cables that you removed from the system board. 4.
Back to Contents Page User's Guide NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.
Back to Contents Page Mini Tower Computer User's Guide About Your Mini Tower Computer Removing the Computer Cover Inside Your Computer Chassis Intrusion Switch System Board Components About Your Mini Tower Computer Front View 1 5.25-inch drive bay Can contain an optical drive. Insert a CD or DVD (if supported) into this drive. 2 5.25-inch drive bay Can contain an optical drive. Insert a CD or DVD (if supported) into this drive. 3 3.
8 power light The power light illuminates and blinks or remains solid to indicate different operating modes: l l l l No light — The computer is turned off. Steady green — The computer is in a normal operating state. Blinking green — The computer is in a power-saving mode. Blinking or solid amber — The computer is receiving electrical power, but an internal power problem may exist (see Power Problems).
Back Panel Connectors 1 parallel connector Connect a parallel device, such as a printer, to the parallel connector. If you have a USB printer, plug it into a USB connector. NOTE: The integrated parallel connector is automatically disabled if the computer detects an installed card containing a parallel connector configured to the same address. For more information, see System Setup Options.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. 1. Follow the procedures in Before You Begin. 2. Lay the computer on its side as shown in the illustration. 3. Locate the cover release latch shown in the illustration.
1 optical drive 2 disk drive 3 power supply 4 optional chassis-intrusion switch 5 system board 6 heat sink assembly 7 hard drive Chassis Intrusion Switch CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
Replacing the Chassis Intrusion Switch 1. Gently insert the switch from underneath the metal bracket into the square hole in the bracket, and then slide the chassis intrusion switch into its slot until you feel it snap securely into place. 2. Reconnect the cable to the system board. 3. Replace the computer cover (see Replacing the Computer Cover). Resetting the Chassis Intrusion Detector 1. Turn on (or restart) your computer. 2.
1 speaker connector (INT_SPKR) 12 RTC reset jumper (RTCRST) 2 fan (FAN_CPU) 13 intrusion switch connector (INTRUDER) 3 processor connector (CPU) 14 battery socket (BATTERY) 4 processor power connector (12VPOWER) 15 PCI Express x16 connector (SLOT1) 5 memory module connectors (DIMM_1, DIMM_2, DIMM_3, DIMM_4) 16 PCI Express x1 connector (SLOT4) 6 password jumper (PSWD) 17 PCI connector (SLOT2) 7 SATA drive connectors (SATA0, SATA1, SATA2, SATA3) 18 PCI connector (SLOT3) 8 front-panel conn
Back to Contents Page Troubleshooting User's Guide Power Lights Dell Diagnostics System Lights Drivers Diagnostic Lights Beep Codes System Messages Troubleshooting Software and Hardware Problems in the Microsoft® Windows® XP and Microsoft Windows Vista® Operating Systems Restoring Your Operating System Follow these tips when you troubleshoot your computer: l If you added or removed a part before the problem started, review the installation procedures and ensure that the part is
3. 4. Close the computer cover (see Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on. Run the Dell Diagnostics. See Dell Diagnostics. Test the cards — 1. 2. 3. 4. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then remove the computer cover (see the appropriate "Removing the Computer Cover" section for your computer). Reinstall one of the cards that you removed previously.
See Sound and Speaker Problems. Problems writing to an optical drive Close other programs — The optical drive must receive a steady stream of data during the writing process. If the stream is interrupted, an error occurs. Try closing all programs before you write to the optical. Turn off standby mode in Windows before writing to a disc — See Power Management for Windows XP and Windows Vista or search for the keyword standby in Windows Help and Support for information on power management modes.
2. Follow the instructions on the screen to identify and resolve modem problems. Modem Helper is not available on certain computers. Windows Vista: 1. 2. Click Start ® All Programs® Modem Diagnostic Tool. Follow the instructions on the screen to identify and resolve modem problems. Modem diagnostics are not available on all computers. Verify that the modem is communicating with Windows — Windows XP: 1. 2. Click Start® Control Panel® Printers and Other Hardware® Phone and Modem Options® Modems.
Keyboard Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. Check the keyboard cable — l l l l Ensure that the keyboard cable is firmly connected to the computer. Shut down the computer (see Before Working Inside Your Computer), reconnect the keyboard cable as shown on the setup diagram for your computer, and then restart the computer.
A program is designed for an earlier Windows operating system Run the Program Compatibility Wizard — Windows XP: The Program Compatibility Wizard configures a program so that it runs in an environment similar to non-XP operating system environments. 1. 2. Click Start® All Programs® Accessories® Program Compatibility Wizard® Next. Follow the instructions on the screen.
Mouse Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. Check the mouse cable — l l l Ensure that the cable is not damaged or frayed and check cable connectors for bent or broken pins. Straighten any bent pins. Remove any mouse extension cables, and connect the mouse directly to the computer. Verify that the mouse cable is connected as shown on the setup diagram for your computer.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. If the power light is green and the computer is not responding — See Diagnostic Lights. If the power light is blinking green — The computer is in standby mode. Press a key on the keyboard, move the mouse, or press the power button to resume normal operation. If the power light is off — The computer is either turned off or is not receiving power.
l For the desktop, see Power Supply l For the small form factor, see Power Supply 3. Connect your computer to a working electrical outlet. 4. Press and hold the power supply test button. ¡ If the test LED illuminates, the power supply is functioning properly. Connect the DC power supply connector to the system board, and then perform the test again. Continue to connect devices (one at a time) and perform the self-test until the test LED fails to illuminate and a faulty device is identified.
l Ensure that the scanner cables are securely connected to the scanner and the computer. Verify that the scanner is recognized by Microsoft Windows — Windows XP: 1. 2. Click Start® Control Panel® Printers and Other Hardware® Scanners and Cameras. If your scanner is listed, Windows recognizes the scanner. Windows Vista: 1. 2. Click Start ® Control Panel® Hardware and Sound® Scanners and Cameras. If the scanner is listed, Windows recognizes the scanner.
Video and Monitor Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: If your computer came with a PCI graphics card installed, removal of the card is not necessary when installing additional graphics cards; however, the card is required for troubleshooting purposes. If you remove the card, store it in a safe and secure location. For information about your graphics card, go to support.dell.com.
Check the graphics card power cable connection — Ensure that the power cable for the graphics card(s) is correctly attached to the card. Check the monitor settings — See the monitor documentation for instructions on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor, and running the monitor self-test. Power Lights CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
See Video and Monitor Problems. Solid green power light and no beep code but the computer locks up during POST An integrated system board device may be faulty. Check the diagnostic lights to see if the specific problem is identified (see Diagnostic Lights). If the problem is not identified, contact Dell for technical assistance (see Contacting Dell). Diagnostic Lights CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Beep Codes Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies a problem. For example, beep code 1-3-1 (one possible beep code) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer encountered a memory problem. Reseating the memory modules may correct the following beep code errors.
Short! decoding circuitry in the memory has occurred. C: Drive Error The hard drive is not working or is not configured correctly. Ensure that the hard drive is installed correctly in the computer (see the "Drives" section for your computer) and defined correctly in the system setup program (see System Setup). Cache Memory Bad, Do Not Enable Cache The cache memory is not operating. See Contacting Dell for instructions on obtaining technical assistance.
system setup and is active. Start the Dell Diagnostics from either your hard drive or from the Drivers and Utilities media (an optional CD). See Starting the Dell Diagnostics From Your Hard Drive or Starting the Dell Diagnostics From the Drivers and Utilities CD (Optional) for more information. Starting the Dell Diagnostics From Your Hard Drive NOTE: If your computer does not display a screen image, contact Dell (see Contacting Dell). 1.
5. Select the Boot from CD-ROM option from the menu that appears. 6. Type 1 to start the Drivers and Utilities CD menu. 7. Type 2 to start the Dell Diagnostics. 8. Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the version appropriate for your computer. 9. When the Dell Diagnostics Main Menu appears, select the test you want to run (see Dell Diagnostics Main Menu).
Many drivers, such as the keyboard driver, come with your Microsoft Windows operating system. You may need to install drivers if you: l Upgrade your operating system. l Reinstall your operating system. l Connect or install a new device. Identifying Drivers If you experience a problem with any device, identify whether the driver is the source of your problem and, if necessary, update the driver. Microsoft® Windows® XP 1. Click Start® Control Panel. 2.
4. Click the Drivers tab® Roll Back Driver. If Device Driver Rollback does not resolve the problem, then use System Restore (see Restoring Your Operating System) to return your computer to the operating state that existed before you installed the new driver. Manually Reinstalling Drivers After extracting the driver files to your hard drive as described in the previous section: Windows XP: 1. Click Start® My Computer® Properties® Hardware® Device Manager. 2.
Windows Vista: 1. Click the Windows Vista start button 2. Type hardware troubleshooter in the search field and press to start the search. , and click Help and Support. 3. In the search results, select the option that best describes the problem and follow the remaining troubleshooting steps. Restoring Your Operating System You can restore your operating system in the following ways: l System Restore returns your computer to an earlier operating state without affecting data files.
1. Click Start® All Programs® Accessories® System Tools® System Restore. 2. Click Undo my last restoration and click Next. Windows Vista: 1. Click Start 2. In the Start Search box, type System Restore and press . . 3. Click Undo my last restoration and click Next. Enabling System Restore NOTE: Windows Vista does not disable System Restore; regardless of low disk space. Therefore, the steps below apply only to Windows XP.
6. Click Next. The System Restore screen appears and the computer restarts. 7. After the computer restarts, click OK. Removing PC Restore: NOTICE: Removing Dell PC Restore from the hard drive permanently deletes the PC Restore utility from your computer. After you have removed Dell PC Restore, you will not be able to use it to restore your computer operating system. Dell PC Restore enables you to restore your hard drive to the operating state it was in when you purchased your computer.
8. Click Finish to reboot the computer. Using the Operating System Media Before you Begin If you are considering reinstalling the Windows operating system to correct a problem with a newly installed driver, first try using Windows Device Driver Rollback. See Using Windows Device Driver Rollback. If Device Driver Rollback does not resolve the problem, then use System Restore to return your operating system to the operating state it was in before you installed the new device driver.
Back to Contents Page Ultra Small Form Factor Computer User's Guide About Your Ultra Small Form Factor Computer Removing the Computer Cover Inside Your Computer Chassis Intrusion Switch System Board Components Connecting the AC Power Adapter Dell Badge About Your Ultra Small Form Factor Computer NOTICE: Do not place your monitor on the computer. Use a monitor stand.
8 hard drive access light The hard drive access light is on when the computer reads data from or writes data to the hard drive. The light might also be on when devices such as your CD player are operating. 9 vents The vents help prevent your computer from overheating. To ensure proper ventilation, do not block these cooling vents. Side View The vents located on each side of the computer help prevent your computer from overheating. To ensure proper ventilation, do not block these cooling vents.
3 network adapter NOTE: Do not plug a telephone cable into the network connector. It is recommended that you use Category 5 wiring and connectors for your network. If you must use Category 3 wiring, force the network speed to 10 Mbps to ensure reliable operation. 4 network activity light The amber light flashes when the computer is transmitting or receiving network data. A high volume of network traffic may make this light appear to be in a steady "on" state.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover).
1 fan shroud/heat sink assembly 4 hard drive 2 speaker (optional) 5 security cable slot 3 memory modules (2) 6 chassis intrusion switch Chassis Intrusion Switch CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTE: The chassis intrusion switch is standard on the ultra small form factor computer but is optional on mini tower, desktop and small form factor computers; it may not be present on your computer.
2. Reconnect the cable to the system board. 3. Replace the computer cover (see Replacing the Computer Cover). 4. If you are using a computer stand, attach it to the computer. Resetting the Chassis Intrusion Detector 1. Turn on (or restart) your computer. 2. When the blue DELL™ logo appears, press immediately. If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then shut down your computer and try again. 3.
Attaching the Cable Cover 1. Ensure that all external device cables are threaded through the hole in the cable cover. 2. Connect all device cables to the connectors on the back of the computer. 3. Hold the bottom of the cable cover so as to align the tabs with the slots on the computer's back panel. 4. 5. Insert the tabs into the slots and slide the cover to align the ends of the cover with the ends of the chassis (see the illustration) until the cable cover is securely positioned.
3. If your AC power cable has a green ground wire for connection to an electrical outlet, connect the metal ground connector to the grounding source (often a screw) on the outlet (see the following illustration): a. Loosen the grounding source. b. Slide the metal ground connector behind the grounding source, and then tighten the grounding source. 1 grounding source (screw) 2 metal ground connector 4. Connect the AC power cable to the power outlet.
1 release lever with tab in slot 2 slots (2) Back to Contents Page
Back to Contents Page User's Guide Module Bay Module Bay CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. You can install a Dell™ removable device such as a floppy drive, optical drive, or second hard drive in the module bay. You can also install an airbay (filler blank) in the bay if you do not plan to install a drive.
1 module locking switch 3. Press the device latch release so that the latch release pops out. 1 device latch release NOTICE: Do not place any heavy objects on top of the computer. Doing so may bend the chassis and cause difficulty in removing a module device. 4. Pull the device by the latch release to remove the device from the module bay. 1 latch release 5. 6. 7. Slide the new device into the module bay.
1. To remove a device installed in the module bay, double-click the Safely Remove Hardware icon on the taskbar. 2. In the list of devices that appears on your screen, click the device you want to eject. NOTE: You cannot remove a device if your computer is turned on and the device is locked in the module bay. You must shut down the computer and follow the steps in Installing a Device When Your Computer Is Turned Off to remove a locked device.
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Back to Contents Page User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover. NOTICE: When replacing the processor, do not touch the underside of the new processor.
1 top of heat sink 2 heat sink 3 retention base 4 release tab b. Gently lift the heat sink from the processor. c. Lay the heat sink down on its top, with the thermal grease facing upward. NOTICE: Unless a new heat sink is required for the new processor, reuse the original heat sink assembly when you replace the processor. 5. Pull the release lever straight up until the processor is released, and then remove the processor from the socket.
1 processor cover 6 release lever 2 tab 7 front alignment-notch 3 processor 8 socket and processor pin-1 indicator 4 processor socket 9 rear alignment-notch 5 center cover latch If you are installing a processor replacement kit from Dell, return the processor to Dell in the same package in which your replacement kit was sent. NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer. 12. Clean the thermal grease from the bottom of the heat sink.
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Back to Contents Page User's Guide Drives Drives Your computer supports: l One SATA (serial ATA) hard drive l One optional Dell D-module optical drive, second hard drive, or floppy drive in the module bay (See Module Bay for information on installing and removing devices in the module bay.) General Installation Guidelines NOTE: For information on installing D-module drives, see the documentation that came with your optional device.
Connecting and Disconnecting Drive Cables When connecting and disconnecting a SATA data cable, hold the cable by the black connector at each end. When removing a cable with a pull-tab, grasp the colored pull-tab and pull until the connector detaches. Hard Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
1 hard drive 2 drive rails (2) 3 data cable connector 4 power cable connector 7. Disconnect the data and power cables from the drive connectors. 8. Remove the four screws that secure the drive rails to the existing hard drive, and attach the drive rails to the replacement hard drive.
11. Replace the computer cover (see Replacing the Computer Cover). 12. Replace the cable cover, if used. See the documentation that came with the drive for instructions on installing any software required for drive operation. 13. Reboot the computer. 14. Partition and logically format your drive before you proceed to the next step. For instructions, see the documentation that came with your operating system. 15. Test the hard drive by running the Dell Diagnostics (see Dell Diagnostics).
1 hard drive bracket 2 screw 3 fan release tab 4 fan 5 side tab 4. Replace the hard drive fan: a. Plug the fan into the computer. b. Align the four side tabs and release tab on the fan with the five corresponding slots on the hard drive bracket. c. Slide the release tab beneath the metal housing covering its slot, and then slide the fan towards the back of the computer. d. Replace the screw to secure the fan release tab to the hard drive bracket.
Back to Contents Page User's Guide Speakers Speakers Installing a Speaker CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1.
5. Replace the computer cover. 6. Turn on power to the computer.
Back to Contents Page User's Guide Ultra Small Form Factor Computer Specifications Ultra Small Form Factor Computer Specifications Microprocessor Microprocessor type The following are supported: l l l Internal cache Intel® Core™2 Intel vPro™ Intel Celeron® L1: up to 64 KB; L2: up to 4 MB (depending on your processor) Memory Type 667-MHz or 800-MHz DDR2 SDRAM Memory connectors 2 Memory modules supported 512 MB, 1 GB, or 2 GB non-ECC Minimum memory dual-channel: 1 GB; single-channel: 5
Bus type SATA 1.0a and 2.0; USB 2.0 Bus speed SATA: 1.5 and 3.0 Gbps; USB: 480 Mbps Drives Internal/External one D-module bay for an optical drive, second hard drive, or floppy drive one bay for a 3.5-inch hard drive Connectors External connectors: Serial 9-pin connector; 16550C-compatible Parallel 25-pin connector (bidirectional) Video 28-pin DVI connector Network adapter RJ45 connector USB two front-panel and five back panel USB 2.
Power DC external power supply: NOTE: Power consumption from an AC power source can be zero when the computer is unplugged from that power source. However, the computer draws a minute amount of power from the internal coin cell battery even when the computer is not drawing power from the AC power source. Wattage 220 W Heat dissipation 751 BTU/hr NOTE: Heat dissipation is calculated based upon the power supply rating.
Dell™ OptiPlex™ 755 User's Guide Ultra Small Form Factor Computer About Your Computer Finding Information Ultra Small Form Factor Computer Ultra Small Form Factor Computer Specifications Advanced Features Installing Your Computer in an Enclosure Cleaning Your Computer Microsoft® Windows® Features Troubleshooting Getting Help Glossary Warranty FCC Notices (U.S.
Back to Contents Page Warranty User's Guide Dell Inc. ("Dell") manufactures its hardware products from parts and components that are new or equivalent to new in accordance with industry-standard practices. For information about the Dell warranty for your computer, see the Product Information Guide or separate paper warranty document that shipped with your computer.
