Dell Dimension E520 Service Manual Dell™ Dimension™ E520 Service Manual Before You Begin About Your Computer Technical Overview Specifications Advanced Troubleshooting System Setup Removing and Installing Parts Notes, Notices, and Cautions 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.
Before You Begin: Dell Dimension E520 Service Manual Back to Contents Page Before You Begin Dell™ Dimension™ E520 Service Manual Getting Started Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Getting Started This manual provides procedures for removing and replacing the components in your computer.
Before You Begin: Dell Dimension E520 Service Manual Use the following safety guidelines to help protect your computer from potential damage and to help ensure your own personal safety. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metal mounting bracket.
About Your Computer: Dell Dimension E520 Service Manual Back to Contents Page About Your Computer Dell™ Dimension™ E520 Service Manual Front View of the Computer Back View of the Computer Back Panel Connectors Front View of the Computer 1 Service Tag Use the Service Tag to identify your computer when you access the Dell Support website or contact support. 2 cover release latch Use this latch to remove the cover.
About Your Computer: Dell Dimension E520 Service Manual drive 6 vents For adequate cooling, do not block any of the vents. NOTICE: Ensure that there is a minimum of two inches of space between all vents and any objects near the vents. NOTICE: Keep the vent area clean and dust-free to ensure that the system is adequately ventilated. Use only a dry cloth to clean the vent area to avoid water damage to the system. 7 USB 2.
About Your Computer: Dell Dimension E520 Service Manual 1 power connector Insert the power cable. 2 back I/O connectors Plug USB, network, VGA monitor, and audio devices into the appropriate connectors (see Back Panel Connectors). 3 card slots (4) Access connectors for installed PCI or PCI Express cards. Back Panel Connectors 1 link integrity light 2 network adapter connector Green — A good connection exists between a 10-Mbps network and the computer.
About Your Computer: Dell Dimension E520 Service Manual Use the 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, and then connect the other end of the network cable to the network adapter connector on your computer. A click indicates that the network cable has been securely attached.
About Your Computer: Dell Dimension E520 Service Manual 12 VGA connector Use the integrated video connector to attach your video monitor (optional). On computers with a video card, use the connector on the card. Back to Contents Page file:///T|/htdocs/systems/dimE520/en/SM_EN/about.
Technical Overview: Dell Dimension E520 Service Manual Back to Contents Page Technical Overview Dell™ Dimension™ E520 Service Manual Inside View of Your Computer System Board Components Power Supply DC Connector Pin Assignments Inside View of Your Computer 1 power supply 2 system board 4 floppy drive (optional) or media card reader (optional) 5 CD or DVD drive System Board Components file:///T|/htdocs/systems/dimE520/en/SM_EN/techov.
Technical Overview: Dell Dimension E520 Service Manual 1 CPU fan connector 2 processor and heat sink connector 3 processor power connector 4 memory module connectors 5 battery socket (BATTERY) 6 SATA Connectors SATA0 and SATA1 7 front panel I/O connector 8 main power connector 9 SATA connectors SATA4 and SATA5 10 FlexBay USB connector 11 clear CMOS jumper (CLRCMOS) 12 password jumper (CLRPSWD) 13 PCI Express x16 card connector 14 PCI Express x1 card connector 15 PCI card connector 1
Technical Overview: Dell Dimension E520 Service Manual DC Power Connector P1 Pin Number Signal Name Color Wire Gauge 1 +3.3 VDC Orange 18-AWG 2 +3.3 VDC Orange 18-AWG 3 COM Black 18-AWG 4 +5 VDC Red 18-AWG 5 COM Black 18-AWG 6 +5 VDC Red 18-AWG 7 COM Black 18-AWG 8 POK Gray 18-AWG 9 +5 VFP Purple 18-AWG file:///T|/htdocs/systems/dimE520/en/SM_EN/techov.
Technical Overview: Dell Dimension E520 Service Manual 10 +12 VB DC White 18-AWG 11 +12VB DC White 18-AWG 12 +3.3 VDC Orange 18-AWG 13 +3.
Technical Overview: Dell Dimension E520 Service Manual 4 COM Black 5 +12 VB DC White DC Power Connector P7 Pin Number Signal Name 18-AWG Wire 1 +5 VDC Red 2 COM Black 3 COM Black 4 +12 A VDC Yellow DC Power Connector P10 Pin Number Signal Name 18-AWG Wire 1 +12 VA DC Yellow 2 COM Black 3 COM Black 4 +5V DC Red NOTE: The P10 connector is intended for use with PCI Express graphics cards that have power requirements exceeding 75 watts.
Specifications: Dell Dimension E520 Service Manual Back to Contents Page Specifications Dell™ Dimension™ E520 Service Manual Processor Processor type Intel® Pentium® 4 Intel® Pentium® D Intel® Core™ 2 Duo NOTE: Not all Pentium 4 processors support Hyper-Threading technology.
Specifications: Dell Dimension E520 Service Manual BIOS chip (NVRAM) 4 MB NIC integrated network interface capable of 10/100 communication System clock 533-MHz, 800-MHz, or 1066-MHz data rate Video Type integrated Intel® Graphics Media Accelerator X3000 (Intel® GMA X3000) PCI Express Audio Type Sigmatel 9227 Expansion Bus Bus type PCI 2.
Specifications: Dell Dimension E520 Service Manual Internally accessible: two bays for 1-inch high serial ATA hard drives Connectors External connectors: Video 15-hole connector Network adapter RJ-45 connector USB two front-panel and six back-panel USB 2.0-compliant connectors Audio six connectors for 7.1 support System board connectors: Serial ATA (SATA) four 7-pin connectors FlexBay Drive one USB 10-pin header (with one pin removed for keying) for optional Media Card Reader (3.
Specifications: Dell Dimension E520 Service Manual Maximum heat dissipation 1040 BTU/hr Voltage (see the safety instructions located in the Product Information Guide for important voltage setting information) Manually selectable: 90 to 135 V and 180 to 265 V at 50/60 Hz Backup battery 3-V CR2032 lithium coin cell Physical Height 41.4 cm (16.3 inches) Width 18.8 cm (7.4 inches) Depth 45.7 cm (18.0 inches) Weight 12.7 kg (28.
Advanced Troubleshooting: Dell Dimension E520 Service Manual Back to Contents Page Advanced Troubleshooting Dell™ Dimension™ E520 Service Manual Power Lights Diagnostic Lights Beep Codes System Messages Dell Diagnostics Drivers Resolving Software and Hardware Incompatibilities Power Lights CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Advanced Troubleshooting: Dell Dimension E520 Service Manual Diagnostic Lights CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. To help you troubleshoot a problem, your computer has four lights labeled 1, 2, 3, and 4 on the front panel (see Front View of the Computer). When the computer starts normally, the lights flash before turning off.
Advanced Troubleshooting: Dell Dimension E520 Service Manual compatibility error has occurred. A possible expansion card failure has occurred. (see Memory). If the problem persists, contact Dell (see "Contacting Dell" in your Owner's Manual). 1. Determine if a conflict exists by removing an expansion card (not a graphics card) and restarting the computer (see Cards). 2. If the problem persists, reinstall the card you removed, then remove a different card and restart the computer. 3.
Advanced Troubleshooting: Dell Dimension E520 Service Manual 3-1-1 Slave DMA register failure 3-1-2 Master DMA register failure 3-1-3 Master interrupt mask register failure 3-1-4 Slave interrupt mask register failure 3-2-2 Interrupt vector loading failure 3-2-4 Keyboard Controller Test failure 3-3-1 NVRAM power loss 3-3-2 NVRAM configuration 3-3-4 Video Memory Test failure 3-4-1 Screen initialization failure 3-4-2 Screen retrace failure 3-4-3 Search for video ROM failure 4-2-1 No time tick 4-2-2 Shutdown fa
Advanced Troubleshooting: Dell Dimension E520 Service Manual CMOS Checksum Failure information in the system System Setup), verify the system configuration, setup program is incorrect and then restart the computer. or the battery charge may be low. CMOS System Options Not Set CMOS Display Type Mismatch CMOS Memory Size Mismatch CMOS Time and Date Not Set Diskette Drive A or B is present Boot Failure but has failed the BIOS POST.
Advanced Troubleshooting: Dell Dimension E520 Service Manual 2. When the DELL logo appears, press immediately. NOTE: Keyboard failure may result when a key is held down for extended periods of time. To avoid possible keyboard failure, press and release in even intervals to open the Boot Device Menu. 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.
Advanced Troubleshooting: Dell Dimension E520 Service Manual (Custom The Dell Diagnostics obtains configuration information for all devices from system setup, memory, and Test various internal tests, and it displays the information in the device list in the left pane of the screen. only) NOTE: The device list may not display the names of all the components installed on your computer or all devices attached to your computer.
Advanced Troubleshooting: Dell Dimension E520 Service Manual NOTICE: The Dell Support website at support.dell.com provides approved drivers for your Dell™ computer. If you install drivers obtained from other sources, your computer may not function properly. Using Windows XP Device Driver Rollback If a problem occurs on your computer after you install or update a driver, use Windows XP Device Driver Rollback to replace the driver with the previously installed version. 1.
Advanced Troubleshooting: Dell Dimension E520 Service Manual If a device is not detected during the operating system setup or is detected but incorrectly configured, you can use the Hardware Troubleshooter to resolve the incompatibility. To resolve incompatibilities using the Hardware Troubleshooter: 1. Click Start, then click Help and Support. 2. Type hardware troubleshooter in the Search field, then click the arrow to start the search. 3. Click Hardware Troubleshooter in the Search Results list. 4.
System Setup: Dell Dimension E520 Service Manual Back to Contents Page System Setup Dell™ Dimension™ E520 Service Manual Overview Entering System Setup System Setup Options Boot Sequence Clearing Forgotten Passwords Clearing CMOS Settings Flashing the BIOS Overview Use system setup as follows: To change the system configuration information after you add, change, or remove any hardware in your computer To set or change a user-selectable option, such as the user password To read the current a
System Setup: Dell Dimension E520 Service Manual to highlight an option. Press to make that selection active. 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. Scroll up and down the list with the up- and down-arrow keys.
System Setup: Dell Dimension E520 Service Manual Identifies and defines the SATA controller settings for RAID. You can set the SATA controller to RAID SATA Operation Autodetect/ATA or RAID On. Onboard Devices You can set the NIC to On (default), Off, or On w/PXE. When the On w/PXE setting is active (available only for the future boot process), the computer prompts you to press .
System Setup: Dell Dimension E520 Service Manual Power Management AC Recovery Determines what happens when AC power is restored to the computer. Sets the computer to automatically turn on. Choices are every day or every Monday through Friday. Auto Power On The default setting is Off. This feature does not work if you turn off your computer using a power strip or surge protector. Sets time to automatically turn on the computer. Auto Power Time Time is kept in the standard 12-hour format (hours:minutes).
System Setup: Dell Dimension E520 Service Manual NOTE: The computer attempts to boot from all bootable devices, but if no bootable device is found, the computer generates an error message that states No boot device available. Press the key to retry the boot, or press the key to enter the setup utility. Onboard or USB Floppy Drive — The computer attempts to boot from the floppy drive.
System Setup: Dell Dimension E520 Service Manual NOTE: Write down your current boot sequence in case you want to restore it. 3. Press the up- and down-arrow keys to move through the list of devices. 4. Press the spacebar to enable or disable a device. Enabled devices have a number assigned to them; disabled devices have no number assigned. 5. Press or to move a selected device up or down the list.
System Setup: Dell Dimension E520 Service Manual 11. Replace the computer cover (see Replacing the Computer Cover). NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer. 12. Connect your computer and devices to electrical outlets, and then turn them on. Clearing CMOS Settings CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. 1.
System Setup: Dell Dimension E520 Service Manual The file downloads to your desktop. 7. Click Close when the Download Complete window appears. The file icon appears on your desktop and is titled the same as the download BIOS update file. 8. Double-click the file icon on the desktop and follow the on-screen instructions. Back to Contents Page file:///T|/htdocs/systems/dimE520/en/SM_EN/syssetup.
Removing and Installing Parts: Dell Dimension E520 Service Manual Back to Contents Page Removing and Installing Parts Dell™ Dimension™ E520 Service Manual Removing the Computer Cover Media Card Reader Inside View of Your Computer CD/DVD Drive System Board Components Battery Memory Power Supply Cards Processor Drive Panel I/O Panel Drives Processor Fan Hard Drive System Board Floppy Drive Replacing the Computer Cover This chapter provides procedures for
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 cover latch release 4 bottom hinges 2 computer cover 3 back of computer 4. Locate the three hinge tabs on the bottom edge of the computer. 5. Grip the sides of the computer cover and pivot the cover up, using the bottom hinges as leverage points. 6. Release the cover from the hinge tabs and set it aside.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 floppy drive 2 CD or DVD drive 3 power supply 4 system board 5 processor shroud and heat sink 6 processor fan 7 hard drive System Board Components file:///T|/htdocs/systems/dimE520/en/SM_EN/parts.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 processor fan connector (CPUFAN) 2 processor connector (CPU) 3 power connector (POWER12V) 4 memory module connectors (2,4) 5 memory module connectors (1,3) 6 battery socket (BATTERY) 7 SATA connector (SATA1) 8 SATA connector (SATA0) 9 front-panel connector (FRNTPANEL) 10 power connector (POWER) 11 line-in, line-out, microphone, 12 SATA connector side surround, center, and LFE (SATA4)* connectors 13 SATA connector (SATA5
Removing and Installing Parts: Dell Dimension E520 Service Manual Memory 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 Memory. DDR2 Memory Overview DDR2 memory modules should be installed in pairs of matched memory size, speed, and technology.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 Channel A: matched pair of memory modules in connectors DIMM_1 and DIMM_2 (white securing clips) 2 Channel B: matched pair of memory modules in connectors DIMM_3 and DIMM_4 (black securing clips) NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 cutouts (2) 4 crossbar 2 memory module 3 notch NOTICE: To avoid damage to the memory module, press the module straight down into the connector while you apply equal force to each end of the module. 5. Insert the module into the connector until the module snaps into position. If you insert the module correctly, the securing clips snap into the cutouts at each end of the module. 6.
Removing and Installing Parts: Dell Dimension E520 Service Manual 3. Press out the securing clip at each end of the memory module connector. 4. Grasp the module and pull up. If the module is difficult to remove, gently ease the module back and forth to remove it from the connector. Cards CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 release tab 2 card retention door 3. Gently push the release tab on the card retention door from the inside to pivot the door open. The door is hinged and will remain in the open position. 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.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 alignment bar 2 fully seated card 3 not fully seated card 4 alignment guide 5 bracket within slot 6 bracket caught outside of slot 8. Before you close the card retention door, ensure that: The tops of all cards and filler brackets are flush with the alignment bar. The notch in the top of the card or filler bracket fits around the alignment guide. 1 alignment guide 4 card retention door 2 alignment bar 3 release tab 9.
Removing and Installing Parts: Dell Dimension E520 Service Manual NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment. 10. On a new card, connect any cables that are part of the installation. See the documentation for the card for information about the card's cable connections. On a replacement card, connect any cables that you removed in step 5.
Removing and Installing Parts: Dell Dimension E520 Service Manual 8. Remove any drivers required for the card as described in the card documentation. 9. If you removed a sound card: a. Enter system setup (see System Setup), select Audio Controller, and then change the setting to On. b. Connect external audio devices to the audio connectors on the back panel of the computer. 10. If you removed an add-in network adapter: a.
Removing and Installing Parts: Dell Dimension E520 Service Manual 4. If your computer includes a card retention mechanism to secure the x16 card in place from the top: a. Pivot the mechanism upward and gently squeeze in on the sides to release the mechanism from the two tab slots holding it in place. b. Set the retention mechanism aside. 5. If you are installing a new card, remove the filler bracket to create a card-slot opening, then continue with step 7. 6.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 alignment bar 2 fully seated card 3 not fully seated card 4 alignment guide 5 bracket within slot 6 bracket caught outside of slot 10. Ensure that: The tops of all cards and filler brackets are flush with the alignment bar. The notch in the top of the card or filler bracket fits around the alignment guide. 11. If previously removed, snap the card retention mechanism into place, securing the x16 PCI card.
Removing and Installing Parts: Dell Dimension E520 Service Manual 13. Reconnect the computer and devices to electrical outlets, and then turn them on. 14. If you installed a sound card: a. Enter system setup (see System Setup), select Audio Controller, and then change the setting to Off. b. Connect external audio devices to the sound card's connectors. Do not connect external audio devices to the microphone, speaker/headphone, or line-in connectors on the back panel. 15.
Removing and Installing Parts: Dell Dimension E520 Service Manual a. Enter system setup (see System Setup), select Integrated NIC, and then change the setting to On. b. Connect the network cable to the integrated connector on the back panel of the computer. Drive Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Removing and Installing Parts: Dell Dimension E520 Service Manual 5. Set the drive panel aside. Removing the Drive-Panel Insert 1 drive panel 2 drive-panel insert tab 3 drive-panel insert 1. Press the drive-panel insert tab towards the center of the drive-panel insert to disengage the insert from the drive panel. 2. Without releasing the tab, pivot the drive-panel insert out and away from the drive panel. 3. Set the drive-panel insert aside.
Removing and Installing Parts: Dell Dimension E520 Service Manual Installing the Drive Panel 1. Follow the procedures in Before You Begin. 1 sliding plate lever 2 sliding plate 3 drive panel 2. Align the drive panel tabs with the side door hinges. 3. Rotate the drive panel toward the computer until it snaps into place on the front panel.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 CD/DVD drive 2 FlexBay for optional floppy drive or optional Media Card Reader 3 hard drive Connect serial ATA hard drives to connectors labeled "SATA0" or "SATA1" on the system board. Connect serial ATA CD or DVD drives to connectors labeled "SATA4" or "SATA5" on the system board. NOTE: Connectors SATA2 and SATA3 are not installed on the system board.
Removing and Installing Parts: Dell Dimension E520 Service Manual the board or card. 1 interface cable 2 interface connector 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 cover. NOTICE: To avoid damage to the drive, do not set it on a hard surface.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 serial ATA data cable 2 power cable 4. Press in on the blue tabs on each side of the drive and slide the drive up and out of the computer. 1 tabs (2) 2 hard drive 5. If removing this drive changes the drive configuration, then be sure to reflect these changes in system setup.
Removing and Installing Parts: Dell Dimension E520 Service Manual NOTE: If your replacement hard drive does not have the hard drive bracket attached, remove the bracket from the old drive by unsnapping it from the drive. Snap the bracket onto the new drive. 1 drive 2 hard-drive bracket 4. Gently slide the drive into place until you feel a click or feel the drive securely installed. 5. Connect the power and hard-drive cables to the drive. 1 serial ATA data cable 2 power cable 6.
Removing and Installing Parts: Dell Dimension E520 Service Manual SATA 0 through 5, set the SATA ports to the correct configuration. See the documentation that came with the drive for instructions on installing any software required for drive operation. 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.
Removing and Installing Parts: Dell Dimension E520 Service Manual and under SATA 0 through 5, set the SATA port to "ON" for the hard drive you just installed to enable the drive. See the documentation that came with the drive for instructions on installing any software required for drive operation. Floppy Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 drive release latch 2 sliding plate 3 floppy drive 7. If you are not replacing the drive, reinstall the drive panel insert (see Installing the Drive-Panel Insert). 8. If you are not replacing the drive, be sure to reflect these changes in system setup. When you restart your computer, enter system setup (see System Setup), then go to the "Drives" section of the BIOS and under Diskette Drive set the value to none.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 floppy drive 2 shoulder screws (4) 5. Gently slide the drive into place until you feel a click or feel the drive securely installed. 6. Attach the power and data cables to the floppy drive. 7. Connect the other end of the data cable to the connector labeled "FLOPPY" on the system board (see System Board Components) and route the cable through the clip on the processor shroud. 1 power cable 2 data cable 3 processor shroud clip 8.
Removing and Installing Parts: Dell Dimension E520 Service Manual 11. Connect your computer and devices to their electrical outlets, and then turn them on. See the documentation that came with the drive for instructions on installing any software required for drive operation. 12. Enter system setup (see System Setup) and select the appropriate Diskette Drive option.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 drive release latch 2 sliding plate 3 Media Card Reader 5. Pull the sliding plate to the right, then slide the drive out the front of the computer. 6. Replace the drive panel insert, as needed (see Installing the Drive-Panel Insert). 7. Replace the drive panel (see Installing the Drive Panel). 8. Replace the computer cover (see Replacing the Computer Cover). 9. Power up the system and enter system setup (see System Setup ).
Removing and Installing Parts: Dell Dimension E520 Service Manual Reader. 1 Media Card Reader 2 screws (4) 7. Gently slide the Media Card Reader into place until you feel a click or feel the drive securely installed. Ensure that the Media Card Reader is installed before the FlexBay cable is connected. 8. Connect the USB cable to the back of the Media Card Reader and to the USB connector on the system board (see System Board Components). 1 Media Card Reader 2 USB cable 3 USB connector 9.
Removing and Installing Parts: Dell Dimension E520 Service Manual CD/DVD 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 removing the cover. Removing a CD/DVD Drive 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 drive release latch 2 sliding plate 3 CD/DVD drive Installing a CD/DVD Drive 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. If you are installing a new drive, unpack the drive and prepare it for installation. Check the documentation that accompanied the drive to verify that the drive is configured for your computer. 4.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 CD/DVD drive 2 screws (3) 6. Connect the power cable to the drive. 7. Connect the CD/DVD data cable to the drive and to the SATA4 connector on the system board (see System Board Components). NOTE: If you are installing a second CD/DVD drive connect the data cable to SATA5. . 1 power cable 2 data cable 8. Check all cable connections, and fold cables out of the way to avoid blocking airflow between the fan and cooling vents.
Removing and Installing Parts: Dell Dimension E520 Service Manual 9. Replace the drive panel (see Installing the Drive Panel). 10. Replace the computer cover (see Replacing the Computer Cover). NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer. 11. Connect your computer and devices to their electrical outlets, and then turn them on. 12.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 battery release lever 2 battery (positive side) 7. Replace the computer cover (see Replacing the Computer Cover). NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer. 8. Connect your computer and devices to electrical outlets, and then turn them on. 9. Enter system setup (see System Setup) and restore the settings you recorded in step 1. 10.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 release tab 4 AC power connector 2 power supply 3 screws (4) Installing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. 1. Slide the power supply into place. 2. Replace the four screws that secure the power supply to the back of the computer frame. 3. Reconnect the DC power cables. 4.
Removing and Installing Parts: Dell Dimension E520 Service Manual 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. Removing the Processor 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Front View of the Computer). 3.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 heat sink and fan shroud assembly 2 captive screw housing (2) NOTICE: If you are installing a processor upgrade kit from Dell, discard the original heat sink. If you are not installing a processor upgrade kit from Dell, reuse the original heat sink when you install your new processor. 7. At the processor, place your finger upon the hook end of the release lever, then push down and out to release it from the tab that secures it.
Removing and Installing Parts: Dell Dimension E520 Service Manual 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.
Removing and Installing Parts: Dell Dimension E520 Service Manual 7. Pivot the socket release lever back toward the socket and snap it into place beneath the securing tab. NOTICE: If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly when you replace the processor. If you installed a processor replacement kit from Dell, return the original heat sink assembly and processor to Dell in the same package in which your replacement kit was sent. 8.
Removing and Installing Parts: Dell Dimension E520 Service Manual operation. Be sure that they have had sufficient time to cool before you touch them. I/O-Panel Components 1 USB port 2 diagnostic, hard drive activity, and network lights 4 microphone connector 5 integrated audio connector with jumper block 3 headphone connector Removing the I/O Panel 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Front View of the Computer). 3.
Removing and Installing Parts: Dell Dimension E520 Service Manual 1 mounting screw 2 I/O panel Installing the I/O Panel Follow the removal procedure (Removing the I/O Panel) in reverse order. If the old I/O panel has a jumper block, move it to the new I/O panel, unless the new one comes with a jumper block. If the old I/O panel has no jumper block, then remove it from the new I/O panel if it comes with one.
Removing and Installing Parts: Dell Dimension E520 Service Manual a. Pivot the mechanism upward and gently squeeze in on the sides to release the mechanism from the two tab slots holding it in place. b. Set the retention mechanism aside. 4. Unhook the floppy drive cable from the clips on the processor shroud and move it out of the way. 1 release tab 2 card retention mechanism 3 card retention door 5.
Removing and Installing Parts: Dell Dimension E520 Service Manual 9. Ensure that all cables have been removed from the routing clips on the top of the system fan assembly. 1 fan release lever 2 fan release lever tab 3 processor fan 10. The fan has two release levers. One on the side facing the hard disk and a smaller one on the opposite side next to the bottom cover.
Removing and Installing Parts: Dell Dimension E520 Service Manual NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components. 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3.
Removing and Installing Parts: Dell Dimension E520 Service Manual 6. Reconnect all cables to their connectors at the back of the computer. 7. Replace the computer cover (see Replacing the Computer Cover). NOTICE: To connect a network cable, first plug the cable into the network port or device and then plug the cable into the computer. 8. Connect your computer and devices to electrical outlets, and then turn them on. NOTE: If the new system board requires flashing the BIOS, refer to Flashing the BIOS.
