Dell Precision Tower 3420 Owner's Manual Regulatory Model: D11S Regulatory Type: D11S001
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2019 -2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents 1 Working on your computer............................................................................................................ 5 Safety instructions................................................................................................................................................................ 5 Before working inside your computer.................................................................................................................................
Navigation keys....................................................................................................................................................................23 System Setup options.........................................................................................................................................................24 Updating the BIOS ........................................................................................................................................
1 Working on your computer Safety instructions Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist: • • You have read the safety information that shipped with your computer. A component can be replaced or--if purchased separately--installed by performing the removal procedure in reverse order.
Turning off your computer CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer. 1. Turning off your computer: • In Windows 10 (using a touch enabled device or mouse): a. Click or tap • . b. Click or tap and then click or touch Shut down. In Windows 8 (using a touch enabled device): a. Swipe in from the right edge of the screen, opening the Charms menu and select Settings. • and then tap Shut down b.
2 Removing and installing components Recommended tools The procedures in this document require the following tools: • • • Small flat blade screwdriver Phillips screwdriver Small plastic scribe Removing the cover 1. Follow the procedure in Before Working Inside Your Computer. 2. To remove the cover: a) Slide the release latch to unlock the cover [1]. b) Slide the cover toward the back of the computer [2]. c) Lift the cover from the computer [3]. Installing the cover 1.
Installing the front bezel 1. Insert the tabs on the bezel into the slots on the computer. 2. Press the bezel until the tabs clicks into place. 3. Install the cover. 4. Follow the procedure in After Working Inside Your Computer. Removing the hard drive assembly 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the cover. 3. To release the hard drive assembly: a) Disconnect the data cables from the hard drives [1]. b) Lift the hard drive assembly away from the computer [2]. 4.
5. Repeat steps 3 to remove the additional hard drive (if available). Installing the hard drive assembly 1. Insert the hard drive into the hard drive bracket. 2. Press the securing brackets and slide the hard drive assembly into the bay. 3. Connect the data cable and the power cable to the hard drive. 4. Install the cover. 5. Follow the procedure in After Working Inside Your Computer. Removing the optical drive 1. Follow the procedure in Before Working Inside Your Computer. 2.
b) Lift the optical drive cage away from the computer [3]. 5. To remove the optical drive from the optical drive cage: a) Press the optical drive release latch [1] and slide the optical drive forward [2]. b) Remove the optical drive from the optical drive cage [3]. Installing the optical drive 1. Slide the optical drive into the optical drive cage. 2. Align the tabs on the optical cage with the slots on the computer. 3. Lower the optical drive cage into the computer and lock the latch. 4.
2. Remove the: a) cover b) heat sink fan cover 3. To remove the intrusion switch: a) Disconnect the intrusion switch cable from the connector on the system board [1, 2]. b) Slide the intrusion switch and lift it away from the computer [3]. Installing the intrusion switch 1. Insert the intrusion switch into the slot on the chassis. 2. Connect the intrusion switch cable to the system board. 3. Install the: a) heat sink fan cover b) cover 4. Follow the procedure in After Working Inside Your Computer.
Installing the memory module 1. Align the notch on the memory module with the tab on the memory module connector. 2. Insert the memory module into the memory module socket. 3. Press the memory module until the memory module retention tabs click into place. 4. Install the: a) optical drive b) hard drive c) cover 5. Follow the procedure in After Working Inside Your Computer. Installing the optional PCIe SSD card NOTE: The PCIe SSD card is shipped with the following components: 1. PCIe SSD card 2.
5. To install the SSD card: a) Connect the SSD card to the connector on the system board [1]. b) Tighten the screw to secure the SSD card to the system board [2]. Removing the optional PCIe SSD card 1. Follow the procedure in After Working Inside Your Computer. 2. Install the: a) cover b) hard drive c) optical drive 3. Remove the screw that secures the PCIe SSD card to the system board. 4. Disconnect the PCIe SSD card from the connector on the system board. 5. Remove the rubber from the system board.
Installing the expansion card 1. Insert the expansion card into the connector on the system board. 2. Press the expansion card until it clicks into place. 3. Close the expansion card latch and press it until it clicks into place. 4. Install the cover. 5. Follow the procedure in After Working Inside Your Computer. Removing the power supply unit (PSU) 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove: a) b) c) d) e) cover front bezel hard drive optical drive heatsink fan cover 3.
a) Remove the screws at the back of the computer that secure the PSU to the computer [1]. b) Press the blue release tab [2] and lift the PSU away from the computer [3]. Installing the power supply unit (PSU) 1. Slide the PSU toward the back of the computer until it clicks into place. 2. Tighten the screws to secure the PSU to the computer. 3. Route the PSU cables through the retention clips. 4. Connect the PSU cables to their connectors on the system board. 5.
Installing the power button 1. Slide the power switch module into the slot on the chassis until it clicks into place. 2. Connect the power switch cable to the connector on the system board. 3. Install the: a) b) c) d) optical drive hard drive front bezel cover 4. Follow the procedure in After Working Inside Your Computer. Removing the Input/Output (I/O) panel 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a) cover b) front bezel 3.
Installing the Input/Output (I/O) panel 1. Insert the I/O panel on the chassis and slide it until it clicks into place. 2. Tighten the screws to secure the I/O panel to the chassis. 3. Install the: a) front bezel b) cover 4. Follow the procedure in After Working Inside Your Computer. Removing the system fan 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a) b) c) d) cover front bezel hard drive optical drive 3.
3. To remove the fan duct: a) Holding the touch points, pull the fan duct bracket to release the fan duct [1]. b) Lift the fan duct away from the computer [2]. Installing the heat sink fan cover 1. Align the slots on the fan duct, with the screws on the heat sink. 2. Insert the fan duct until it clicks into place. 3. Install the cover. 4. Follow the procedure in After Working Inside Your Computer. Removing the heat sink assembly 1. Follow the procedure in Before Working Inside Your Computer. 2.
Installing the heat sink assembly 1. Place the heat sink assembly onto the processor. 2. Tighten the captive screws to secure the heat sink assembly to the system board. 3. Connect the heat sink cable to the system board. 4. Install the: a) b) c) d) e) heat sink fan cover optical drive hard drive front bezel cover 5. Follow the procedure in After Working Inside Your Computer. Removing the processor 1. Follow the procedure in Before Working Inside Your Computer. 2.
Installing the processor 1. Align the processor with the socket keys. 2. Align the pin-1 indicator of the processor with the triangle on the socket. 3. Place the processor on the socket such that the slots on the processor align with the socket keys. 4. Close the processor shield by sliding it under the retention screw. 5. Lower the socket lever and push it under the tab to lock it. 6. Install the: a) b) c) d) heat sink hard drive front bezel cover 7.
Installing the system board 1. Hold the system board by its edges and angle it toward the back of the computer. 2. Lower the system board into the computer until the connectors at the back of the system board align with the slots on the back wall of the computer, and the screw holes on the system board align with the standoffs on the computer. 3. Tighten the screws that secure the system board to the computer 4. Connect the cables to the system board. 5.
System board components Figure 1. Components of the system board 1. PCI Express x16 Gen 3 slot 3. USB 2.0 with network connector 5. PS2 keyboard/mouse connectors 7. 2 x DisplayPort connector 9. Line-Out connector 11. intrusion switch connector 13. CPU socket 15. memory slot 17. front power-switch connector 19. SD Card Reader (optional) 21. system fan connector 23. USB 2.0 connector 25. 8-pin power connector 27. SATA 2 connector(Black color) 29. service mode jumper connector 31. SATA power connector 33.
3 System Setup System Setup enables you to manage your computer hardware and specify BIOS level options.
Table 2. Navigation keys Keys Navigation Up arrow Moves to the previous field. Down arrow Moves to the next field. Enter Allows you to select a value in the selected field (if applicable) or follow the link in the field. Spacebar Expands or collapses a drop‐down list, if applicable. Tab Moves to the next focus area. NOTE: For the standard graphics browser only. Esc Moves to the previous page till you view the main screen.
Option Description • Serial Port Enabled w/Cloud Desktop Identifies and defines the serial port settings. You can set the serial port to: • • • • • Disabled COM1 (Default) COM2 COM3 COM4 NOTE: The operating system may allocate resources even if the setting is disabled. SATA Operation Allows you to configure the internal SATA hard-drive controller. The options are: • • • Drives Disabled AHCI RAID On (Default) Allows you to configure the SATA drives on board.
Option Description Audio Allows you enable or disable the audio feature. Enable Audio (Default) • • Miscellaneous devices Enable Microphone Enable Internal Speaker Allows you to enable or disable various on board devices. • • Enable Media Card (Default) Disable Media Card Table 5. Video Option Description Primary Display Allows you to configure primary video controller when there are multiple controllers available. The options are: • • Auto (Default) Intel HD Graphics Table 6.
Option Description OROM Keyboard Access Allows you to determine whether users are able to enter Option ROM Configuration screens via hotkeys during boot. The options are: • • • Admin Setup Lockout Enable (Default) One Time Enable Disable Allows you to prevent users from entering Setup when an administrator password is set. • Enable Admin Setup Lockout Default Setting: The option is disabled. Table 7.
Option Description Intel SpeedStep Allows you to enable or disable the Intel SpeedStep feature. Default Setting: Enable Intel SpeedStep C-States Control Allows you to enable or disable the additional processor sleep states. C states (This option is selected by default) Limit CPUID Value This field limits the maximum value the processor Standard CPUID Function will support. • Enable CPUID Limit Default Setting: The option is disabled. Table 10.
Table 11. POST behavior Option Description Numlock LED Allows you to specify if the NumLock function is enabled when the system boots. This option is enabled by default. MEBx Hotkey Allows you to specify whether the MEBx Hotkey function should be enabled when the system boots. This option is enabled by default. Keyboard Errors Specifies whether keyboard related errors are reported when it boots. This option is enabled by default. Table 12.
Option Description • DHCP (default) Client IP Address Specifies the Static IP address of the client. The default setting is 255.255.255.255 Client Subnet Mask Specifies the subnet mask of the client. The default setting is 255.255.255.255 Client Gateway Specifies the gateway of the client. The default setting is 255.255.255.255 DNS IP Address Specifies the DNS IP address of the client. The default setting is 255.255.255.255 Domain Name Specifies the Domain name of the client.
Jumper settings To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated on the system board. Table 17. Jumper settings Jumper Setting Description PSWD Default Short: Default Open: Clear Password RTCRST Default Open: Default Short: Real-time clock reset. Can be used for troubleshooting SERVICE_MODE Default Open: Default Short: ME disable System and setup password You can create a system password and a setup password to secure your computer.
7. Press Esc and a message prompts you to save the changes. 8. Press Y to save the changes. The computer reboots. Deleting or changing an existing system and/or setup password Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing System and/or Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is Locked. To enter the System Setup, press F2 immediately after a power-on or reboot. 1.
4 Diagnostics If you experience a problem with your computer, run the ePSA diagnostics before contacting Dell for technical assistance. The purpose of running diagnostics is to test your computer's hardware without requiring additional equipment or risking data loss. If you are unable to fix the problem yourself, service and support personnel can use the diagnostics results to help you solve the problem.
Table 18.
Error message Description note this checkpoint and contact Dell Technical Support. Alert! Security The MFG_MODE jumper has been set and AMT Management features are disabled until it is removed. override Jumper is installed. Attachment failed to respond The floppy or hard drive controller cannot send data to the associated drive. Bad command or file name Ensure that you have spelled the command correctly, put spaces in the proper place, and used the correct pathname.
Error message Description Keyboard failure A cable or connector may be loose, or the keyboard or keyboard/mouse controller may be faulty. Memory address line failure at address, read value expecting value A memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them. Memory allocation The software you are attempting to run is conflicting with the operating system, another program, or a utility.
Error message Description Shutdown failure A chip on the system board might be malfunctioning. Time-of-day clock The battery might be dead. stopped Time-of-day not The time or date stored in System Setup does not match the computer clock. set-please run the System Setup program Timer chip counter 2 failed A chip on the system board may be malfunctioning. Unexpected interrupt in protected mode The keyboard controller may be malfunctioning or a memory module may be loose.
5 Specifications NOTE: Offerings may vary by region. For more information regarding the configuration of your computer in: • Windows 10, click Start > Settings > System > About. • Windows 8.1 and Windows 8, click Start • Windows 7, click Start > PC Settings > PC and devices > PC Info. , right-click My Computer, and then select Properties. Table 19.
Table 24. System information Feature Specification System chipset Intel C236 chipset DMA channels Two 8237 DMA controllers with seven independently programmable channels Interrupt cevels Integrated I/O APIC capability with 24 interrupts BIOS chip (NVRAM) 16 MB Table 25. Expansion bus Feature Specification Bus type PCIe gen3 (x16), USB 2.0, and USB 3.0 Bus speed PCI Express: • • x4-slot each direction speed – 4GB/s x16-slot each direction speed – 16 GB/s SATA: 1.5 Gbps, 3.
Table 29. Internal connectors Feature Specification PCI 2.
Table 31. Power Power Wattage Maximum heat dissipation Voltage Small Form Factor 180 W/240 W EPA 614/819 BTU/hr 100 V AC to 240 V AC, 50 Hz to 60 Hz, 4.0 A NOTE: Heat dissipation is calculated by using the power supply wattage rating. Coin cell battery 3 V CR2032 lithium coin cell Table 32. Physical dimension Physical Height Width Depth Weight Small Form Factor 290.00 mm (11.41 inches) 92.60 mm (3.64 inches) 292.00 mm (11.49 inches) 6.30 kg (13.
6 Contacting Dell NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: 1. Go to Dell.com/support. 2. Select your support category. 3.
