Dell Precision 7920 Tower Owner's Manual Regulatory Model: D04X Regulatory Type: D04X001 May 2020 Rev.
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. 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. © 2017 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Chapter 1: Chassis.........................................................................................................................7 Front view..............................................................................................................................................................................7 Back view.......................................................................................................................................................................
Hard disk drive assembly................................................................................................................................................. 34 Removing the HDD carrier........................................................................................................................................ 34 Installing the HDD carrier..........................................................................................................................................
Removing the processor heat sink module............................................................................................................74 Installing the processor heat sink module..............................................................................................................75 Removing the CPU......................................................................................................................................................76 Installing the CPU.....................
Updating BIOS on systems with BitLocker enabled..........................................................................................108 Updating your system BIOS using a USB flash drive........................................................................................ 108 Updating the Dell BIOS in Linux and Ubuntu environments............................................................................109 Flashing the BIOS from the F12 One-Time boot menu.............................................
1 Chassis This chapter illustrates the multiple chassis views along with the ports and connectors and also explains the FN hot key combinations. Topics: • • • • Front view Back view Internal view Major components of your system Front view 1. 3. 5. 7. Power button/Power light SD card slot USB 3.2 Type-C port with PowerShare Universal audio jack 2. 4. 6. 8. HDD Activity LED USB 3.2 Gen 1x1 ports USB 3.
9. 5.25" ODD Bay 10. Slimline optical bay Back view 1. 3. 5. 7. 9. 11. 13. 15. 8 Power supply unit Microphone/Line-in port PS/2 Mouse port PS/2 Keyboard port Network Port USB 3.2 Type-C port with PowerShare PCIe expansion slots PCIe expansion slots (CPU1 required) Chassis 2. 4. 6. 8. 10. 12. 14. Line-out port Serial port PSU BIST LED Network Port (AMT Enabled - Optional) USB 3.
Internal view 1. 3. 5. 7. 9. System board Intrusion switch Front Bezel lock/unlock button Powered graphical processing unit (GPU) Rear HDD Bezel lock/unlock button 2. 4. 6. 8. 10.
1. 3. 5. 7. 9. 10 CPU1 socket PCIe holder CPU0 Memory Slots Half length PCIe graphics card CPU1 Memory Slots Chassis 2. 4. 6. 8.
1. 3. 5. 7. 9. 11. Flex 2 (default is 5.25" and Slim ODD Bay) HDD fan bracket 1 Power distribution and fan control board Flex 3 (optional) HDD fan bracket 0 Flex 0 enclosure 2. 4. 6. 8. 10.
Major components of your system This section illustrates the major components of your system along with its location. 1. Side cover 2. Air shroud 3. PCIe holder 4. Front system fan assembly 5. Slim Optical Disk Drive 6. Memory bracket 7. 5.25 inch Optical Disk Drive 8. NVMe Flexbay 9. Front input and output panel 10. Front bezel 11. Front input and output bezel 12. Hard disk drive and optical disk drive frame 13. Hard Disk Drive bezel 14. Backpane and Drop cables 15. Right side cover 16.
22. Processor heat sink module 23. Front System fan 24. System fan 25. Power Distribution Board 26. Power supply unit (PSU) NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.
2 Working on your computer Topics: • • • • Safety instructions Turning off your computer — Windows Before working inside your computer After working inside your computer Safety instructions Use the following safety guidelines to protect your computer from potential damage and 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.
NOTE: Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds to turn them off. Before working inside your computer 1. Save and close all open files and exit all open applications. 2. Shut down your computer. Click Start > Power > Shut down.
3 Removing and installing components Topics: • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Screw size list Recommended tools Power supply unit (PSU) Side cover Air shroud Front bezel PCIe holder Intrusion switch Front system fan assembly Internal chassis speaker Hard disk drive and the Optical disk drive bezel Hard disk drive assembly NVMe Flexbay Front input and output bezel Front input and output panel Rear system fan Right side cover Hard disk drive and optical disk drive frame Slim Optica
Table 1. Screw list (continued) Component Screw Type Quantity Down-Bottom air shroud M3X5.0mm 2 Motherboard #6-32X1/4 inches 12 Front Fan Bracket-MB tray #6-32X1/4 inches 2 Front Fan Bracket-Front wall #6-32X1/4 inches 2 Intruder holder #6-32X1/4 inches 1 Rear Fan bracket #6-32X1/4 inches 2 Rear HDD cover #6-32 UNC X7.0mm 2 Flex0 HDD bay bracket #6-32 UNC X5.45mm 4 Flex0 6025fan bracket for cable attached #6-32 UNC X5.45mm 2 Flex0 6025fan bracket for hot plug #6-32 UNC X5.
Power supply unit (PSU) Removing the PSU 1. Follow the procedure in Before working inside your computer. 2. Disconnect the power cable from the system. 3. Press the PSU release latch [1] and slide the power supply away from the system [2]. NOTE: If the PSU cannot be removed then remove the right side cover of the system and check if the PSU is secured with a screw. Installing the PSU 1. Slide in the power supply unit to the PSU slot on the system. 2. Connect the power cable to the system. 3.
4. Pull the latch [1] upward and rotate it to release the cover [2]. 5. Lift the cover to remove it from the system. Installing the side cover 1. First hold and align the bottom of the side cover to the chassis. 2. Ensure that the hook on the bottom of the side cover snaps into the notch on the system. 3. Press the system cover until it clicks into place.
CAUTION: The system will not power on without the side cover. Also, the system will shut down if the side cover is removed while the system is on. 4. Follow the procedure in After working inside your computer . Air shroud Removing the air shroud 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. To remove the air shroud Fan assembly: a. Disconnect the fan connector cable from the system board [1]. b. Lift the shroud away from the system [2].
b. removing air shroud (Top) 3. Flip-over the shroud to see the fan. 4. To remove the fan, release the fan connector cable from the latches [1] and [2]. 5. Remove the screws that secures the fan to the air shroud [1], and lift the fan away from the air shroud [2]. NOTE: The shroud will need to be flexed open slightly in order to be removed.
Installing the air shroud fan 1. Place the fan into its position inside the air shroud . 2. Replace the screws that secure the fan to the air shroud. 3. Route back the fan connector cable through the latches on the air shroud and flip over. 4. Install the: a. air shroud (top) b. side cover 5. Follow the procedure in After working inside your computer. Front bezel Removing the front bezel 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3.
b. Rotate the bezel forward and lift the front bezel away from the system. Installing the front bezel 1. Hold the bezel and ensure that the hooks on the bezel snap into the notches on the system. 2. Rotate the bezel forward and press the front bezel until the tabs click into place. 3. Follow the procedure in After working inside your computer.
PCIe holder Removing PCIe card holder 1. Follow the procedure in Before working inside your computer. 2. Remove the following: a. side cover b. air shroud 3. To remove the PCIe card holder: NOTE: If full length cards are installed, you will need to remove these cards before removing the holder. NOTE: If MegaRAID 9460 is installed, disconnect the Super CAP from the card before removing the PCIe card holder from the system. a.
Installing the PCIe card holder 1. Align the PCIe card holder to the slot in front of the system fan assembly, and press down until it clicks in place. 2. Route the dual cables back through the clip on the PCIe card holder. 3. Connect the power cables on either side to the cable slots in the PCIe card holder. 4. Reinstall the full length cards if they were removed. 5. If the MegaRAID 9460 was removed, please connect the Super CAP back to the card. 6. Install the: a. air shroud b. side cover 7.
4. Install the right side cover 5. Flip the system back with the system cover facing up where the release latch is available. 6. Remove the following components : a. side cover b. air shroud c. PCIe card holder 7. To remove the intrusion switch module: a. b. c. d. e. 26 Pull the bottom intrusion switch cable up toward the chassis [1]. Press the tab to disconnect the intrusion switch cable from the system board [2]. Unroute the intrusion switch cables from the clip on the chassis [3].
Installing the intrusion switch 1. Place the intrusion switch module into the slot in the front system fan assembly. 2. To secure the intrusion switch module to the front system fan chassis, replace the single screw on the module. 3. Route the intrusion switch cables through the clip on the chassis. 4. Connect the intrusion switch cable to the system board. 5. Push the bottom intrusion switch cable down toward the bottom chassis. 6. Replace the following components: a. PCIe graphics card holder b.
Front system fan assembly Removing the front system fan assembly 1. Follow the procedure in Before working inside your computer. 2. Remove the following: a. b. c. d. side cover front bezel air shroud PCIe card holder 3. To remove the system fan assembly: a. Remove the single screw on the intrusion switch module [1], and lift it away from the system fan chassis [2]. b.
5. Remove the two screws securing the fan chassis to the system [1], and the two screws securing the fan chassis in front of the system [2].
6. Rotate and lift the fan assembly away from the system.
Installing the front system fan assembly 1. Hold the system fan by the sides with the cable end facing the bottom of the chassis. 2. Replace the two screws securing the system fan assembly in front of the system. 3. Replace the two screws securing the system fan assembly in the system. 4. Connect the four system fan cables to the system board. 5. Route back the internal chassis speaker cable through the clip on the system fan assembly, and connect the internal chassis speaker to the connector. 6.
a. side cover b. front bezel 3. To remove the internal chassis speaker: a. Disconnect one end of the internal chassis speaker cable from the connector on the system board [1]. b. Unroute the internal chassis speaker cable from the clip on the system fan assembly. 4. Press and hold the tabs [2] on either side of the internal chassis speaker, to slide and remove it out of the system [3]. Installing the internal chassis speaker 1.
Hard disk drive and the Optical disk drive bezel Removing the HDD bezel 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a. side cover b. front bezel 3. To remove the HDD bezel: a. Press the blue unlock button [1], which is located near the front system fan assembly. b. Slide the latch [2] on the front I/O bezel, to release the HDD bezel from the chassis [3]. c. Rotate and lift the HDD bezel out from the chassis [3]. 4.
Hard disk drive assembly Removing the HDD carrier 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. side cover NOTE: Do not remove the side cover, if the front I/O bezel is unlocked. b. HDD bezel NOTE: Remove only the HDD bezel. 3. To remove the HDD carrier: a. Press the release button [1] to unlock the latch [2]. b. Pull the latch to slide the carrier out of the HDD slot.
Installing the HDD carrier 1. Slide the carrier into the drive bay until it clicks into place. CAUTION: Ensure that the latch is open before installing the carrier. 2. Lock the latch. 3. Install the following components: a. HDD bezel b. side cover 4. Follow the procedure in After working inside your computer. Removing the HDD 1. Follow the procedure in Before working inside your computer. 2. Remove the following: a. side cover b. HDD bezel c. HDD carrier 3. To remove the 3.5 inch HDD: a.
b. Lift the hard drive out of the carrier. Installing the HDD 1. Insert the HDD to its slot in the HDD bracket with the connector end of the hard drive towards the back of the HDD carrier. 2. Slide the HDD carrier back into the hard drive bay. 3. Install the following: a.
b. HDD bezel c. side cover 4. Follow the procedure in After working inside your computer NVMe Flexbay Removing the NVMe Flexbay 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. side cover NOTE: Do not remove the side cover, if the front I/O bezel is unlocked. b. HDD bezel NOTE: Remove only the HDD bezel. 3. To remove the NVMe flexbay: a. Press the release button [1] to unlock the latch [2]. b. Pull the latch to slide the carrier out of the HDD slot.
4. To remove the SSD carrier from the NVMe flexbay: a. Press the release button to slide the M.2 SSD carrier out of the NVMe flexbay. b. Pull the M.2 SSD carrier out of the NVMe flexbay.
5. To remove the SSD from the SSD carrier: a. Remove the screws on either side of the SSD. b. Remove the screw from the top of the SSD carrier.
c. Slide the SSD cover from the top of the carrier. d. Slide the SSD out of the M.2 slot on the carrier.
Installing the NVMe flexbay 1. To install the SSD in the carrier: a. Remove the dummy SSD blank from the SSD carrier. b. Peel off the tape from the SSD carrier.
c. Peel off the adhesive tape from the SSD carrier cover. 2.
3. Replac the two side screws and the central screw. 4. To install the SSD carrier slide the carrier in the NVMe flexbay until it clicks in place. 5. Slide the carrier into the drive bay until it clicks into place. CAUTION: Ensure that the latch is open before installing the carrier. 6. Lock the latch. 7. Install the following components: a. HDD bezel b. side cover 8. Follow the procedure in After working inside your computer. Front input and output bezel Removing the front input and output bezel 1.
4. Slightly slide the panel, and lift it away from the chassis.
Installing the front input and output bezel 1. Align and press the bezel toward the front chassis on the system. 2. Install the: a. HDD and ODD bezel b. front bezel c. side cover 3. Follow the procedure in After working inside your computer Front input and output panel Removing the front input and output panel 1. Follow the procedure in Before working inside your computer. 2. Remove the following: a. b. c. d. e. f.
g. input and output bezel 3. To remove the front Input/Output (I/O) panel: a. Disconnect the following cables from the connectors on the I/O panel. ● ● ● ● Front Front Front Front panel cable [1] USB 3.1 cable [2] USB 3.1 cable [3] panel audio cable [4] b. Remove the single screw that secures the I/O panel to the chassis.
4. Slide the I/O panel toward the left of the system to release it, and then remove the I/O panel out of the system.
Installing the front input and output panel 1. Insert the I/O panel into the slot on the front of the chassis. 2. Slide the I/O panel toward the right of the system to secure it to the chassis. 3. Replace the screw to secure the I/O panel to the chassis. 4. Connect the following cables to the connectors on the I/O panel: ● ● ● ● Front Front Front Front panel cable USB 3.1 cable USB 3.1 cable panel audio cable NOTE: The color of the cable matches the color of the connector. 5. Install the following: a. b.
f. air shroud g. side cover 6. Follow the procedure in After working inside your computer Removing the input and output panel bracket 1. Follow the procedure in Before working inside your computer. 2. Remove the following: a. b. c. d. e. f. g. h. side cover air shroud front bezel PCIe holder front system fan HDD and ODD bezel input and output bezel input and output panel 3. To remove the Input/Output (I/O) panel bracket: a. Remove the two screws that secure the I/O panel to the bracket. b.
Installing the input and output panel 1. Insert the Input/Output (I/O) panel into the metal bracket. 2. Replace the two screws to secure the I/O panel to the I/O bracket. 3. Install the: a. b. c. d. e. f. g. h. input and output panel input and output bezel HDD bezel front system fan PCIe holder front bezel air shroud side cover 4. Follow the procedure in After working inside your computer Rear system fan Removing the rear system fan 1. Follow the procedure in Before working inside your computer. 2.
b. Disconnect the system fan cables from the system board [1, 2]. CAUTION: Do not pull the connector by the cable wires. Instead, disconnect the cable by pulling on the connector end. Pulling on the cable wires may loosen them from the connector. 4. Lift the system fan assembly from the system.
Installing the rear system fan 1. Hold the rear system fan by the sides with the cable end facing the bottom of the chassis. 2. Connect the two system fan cables to the system board. 3. Replace the two screws to secure the fan with the chassis. 4. Install the: a. air shroud b. side cover 5. Follow the procedure in After working inside your computer. Right side cover Removing the right side cover 1. Follow the procedure in Before working inside your computer. 2.
Hard disk drive and optical disk drive frame Removing the HDD and ODD frame 1. Follow the procedure in Before working inside the computer. 2. Remove the: a. b. c. d. side cover front bezel HDD and ODD bezel front i/o bezel 3. To remove the front HDD and ODD frame, gently pry on the latches of the frame. 4. Slightly pull the panel, and lift it away from the chassis.
5. Flip the frame. 6. Gently press the release tab on the plastic filler and lift it out of the frame.
7. Holding the blue tag, gently pull the optical drive metal filler out of the slot.
Installing the HDD and ODD frame 1. Install the plastic filler and metal blank if the optical drive is not installed. 2. Align and place the HDD and ODD frame on the system. 3. Gently press down on the frame to secure it to the system. 4. Install the: a. b. c. d. front I/O bezel HDD and ODD bezel front bezel side cover 5. Follow the procedure in After working inside your computer. Slim Optical Disk Drive Removing the slim ODD and ODD latch 1. Follow the procedure in Before working inside the computer. 2.
4. Remove the ODD out of the drive bay. 5. To remove the ODD bracket from the ODD drive: a. Push the optical drive latch inwards so that the latch disconnects from the optical drive.
b. Remove the latch from the optical drive. Installing the slim ODD and ODD latch 1. Place the ODD latch into its position on the ODD drive and lock it. 2. Slide the optical drive into the drive bay from the front of the system until it fits in to place. 3. Connect the data cable and power cable to the connectors on the optical drive. 4. Install the right side cover 5.
5.25-inch optical drive Removing the 5.25-inch optical drive 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. side cover 3. To remove the 5.25-inch optical drive: a. Disconnect the power cable and the SATA cable from the optical drive. b. Push down on the release latch [1]. c. Slide the optical drive out of the system [2].
Installing the 5.25-inch optical drive 1. Remove the: a. b. c. d. e. side cover front bezel HDD and optical drive bezel front I/O bezel HDD and optical drive frame 2. Align the screw holes on the bracket with the holes on the optical drive. 3. Install the four screws that secure the plastic optical drive bracket to the optical drive.
4. Slide the optical drive into the slot, until it locks into place. 5. Connect the power cable and the SATA cable to the optical drive. 6. Install the: a. b. c. d. e. HDD and optical drive frame front I/O bezel HDD and optical drive bezel front bezel side cover 7. Follow the procedure in After working inside your computer. Power distribution and fan control board Removing the power distribution and fan control board 1. Follow the procedure in Before working inside the computer. 2. Remove the: a. PSU b.
4. Remove the three screws that secure the control board to the chassis [1, 2]. Lift the control board away from the chassis. Installing the power distribution and fan control board 1. Replace the control board into its slot on the chassis and secure it with the three screws to the chassis. 2. Connect the two power cables, fan cables, PDB, power VGA cables, to the connectors on the control board. 3. Install the: a.
b. PSU 4. Follow the procedure in After working inside your computer Front HDD cable and fan assembly Removing the front HDD cable and fan assembly 1. Follow the procedure in Before working inside the computer. 2. Remove the right side cover 3. To remove the front HDD cable and fan assembly: a. b. c. d. Remove the four screws securing both the fan brackets to the chassis [1]. Press the tabs of the connector to disconnect the SATA 0 cable from the connector on the system board [2].
Installing the front HDD cable and fan assembly 1. Connect the fan cables to the connectors on the power distribution and fan control board. 2. Connect the power cable to the connector on the power distribution and fan control board. 3. Connect the SATA 0 cable to the connector on the system board. 4. Replace the front HDD cable and fan assembly into their slots on the chassis and secure them with screws to the chassis. 5. Install the right side cover 6.
Figure 1.
Figure 2. HDD Fans NOTE: Availability of these fans are dependent on configuration ordered. Table 2.
Mandatory System Fan Removing and installing components 67
Removing and installing components
NOTE: When HDD# FAN is installed, the HDD fans can be verified in the system setup and individually activated. But when the HDD# FAN is removed, it needs to manually unchecked in the system setup. Verify system fan functionality Onsite Technicians are encouraged to run ePSA after the service is completed to verify if all the fans are detected and working. Fan bracket Removing the fan from the fan bracket 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. side cover b.
Installing the fan into the fan bracket 1. Place the fan into the fan bracket. 2. Tighten the grommets that secure the fan to the fan bracket. 3. Install the: a. system fan b. side cover 4.
Graphical processing unit(GPU) Removing the GPU 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. To remove the GPU: a. Disconnect the power cable [1] from the GPU card. NOTE: Not all GPU cards will have power cable, may not apply to all systems. b. Press and rotate the blue clips backward [2], to unlock the filler bracket. c. Lift the GPU from the PCIe slot on the system board.
Installing the GPU 1. Align and place the GPU to the PCIe slot on the system board. 2. Press it down so that it is securely seated on the slot. 3. Connect the power cable to the GPU. 4. Lock both the blue clips forward on the filler bracket to secure the GPU to the system board. 5. Install the side cover. 6. Follow the procedure in After working inside your computer. Memory Removing the memory module 1. Follow the procedure in Before working inside your computer. 2. Remove the following: a. side cover b.
WARNING: Rotating the memory module out of the slot will cause damage to the memory module. Ensure to pull it straight out of the memory module slot. 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 slot. 3. Press the memory module firmly until the retention tabs click into place. NOTE: Do not pull the retention levers up.
b. Lift the coin-cell battery out of the system board. Installing the coin cell battery 1. Place the coin-cell battery into its slot on the system board. 2. Press the coin-cell battery with positive (+) side facing up until the release latch springs back into place and secures it to the system board. 3. To install: a. air shroud b. graphical processing unit (GPU) c. side cover 4. Follow the procedure in After working inside your computer.
NOTE: Ensure that you have Torx 30 screwdriver to remove the processor heat sink module (PHM). 2. Remove the: a. side cover b. air shroud 3. To remove the heat sink: a. Remove the four heat sink screws [1], in the diagonal order (4, 3, 2, 1). b. Lift the heat sink away from the CPU slot on the system board. CAUTION: CPU will be removed with the heat sink. Installing the processor heat sink module 1. Place the heat sink on the CPU slot. 2.
Removing the CPU 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. side cover b. air shroud c. processor heat sink module 3. To remove the central processing unit (CPU): a. Hold the processor heat sink module upside down. b. Pry the two processor carrier latchs [1] from the processor heat sink module. c. Press the other two carrier latchs [2] of the processor carrier and remove it from the slot in the heat sink. d.
Installing the CPU 1. Orient the processor carrier so that the smooth (logo-less) side of the carrier is facing up and the triangle mark on the carrier is on the bottom left hand corner. 2. Align the processor with the carrier so that the triangle mark on the top side of the processor is aligned with the triangle mark on the carrier.
3. Flip both the processor and the carrier over so that the pins on the processor and the logo side of the carrier are facing up. 4. Carefully insert the processor into the carrier so that it is secured by the hooks on the upper and lower side of the carrier. NOTE: After inserting the processor into the carrier, check to see whether the small triangle on the processor aligns with the triangle on the carrier. If they are not aligned repeat the preceding steps. 5.
6. Insert the processor and carrier assembly into the heat sink so that the hooks on the four corners of the carrier are locked into the openings of heat sink. NOTE: After inserting the processor and carrier assembly into the heat sink, double check to see whether the triangle on the carrier is located on the bottom right corner of the heat sink (when the bottom side of the heat sink is facing up). 7.
8. Install the: a. heat sink b. air shroud c. side cover 9. Follow the procedure in After working inside your computer System board System board components Figure 1.
1. PCIe 3*16 (4 slots) and 3*8 ( 1 slot) 3. CPU1 memory slots 5. CPU1 memory slots 7. CPU1 PCIe 3 x16 Slots (2) 9. Piezo speaker 11. Power 2 13. System Fan 3 15. CPU0 memory slots 17. System Fan 2 19. System Fan 1 21. CPU fan 1 23. ODD connector 25. USB 2_Int 27. Power remote 2. Rear fan 0 connector 4. CPU1 socket 6. Rear fan 1 connector 8. Front panel audio 10. Power Control 12. Intrusion switch connector 14. Internal speaker connector 16. CPU0 socket 18. CPU0 memory slots 20. Power 1 22.
b. c. d. e. f. g. h. front bezel air shroud PCIe card holder front system fan memory module processor heat sink module rear system fan 3. Disconnect the following cables from the system board: ● ● ● ● ● ● Front panel audio cable [1] Power cable Power control cable Internal chassis speaker cable Intrusion module cable System fan 3 cable [2] 4.
5. Remove the right side cover, to disconnect the SATA 0 cable from system board. NOTE: Depending on the system configuration, additional cables might need to be disconnected. 6. Remove the twelve screws securing the system board to the chassis.
7. Lift the system board away from the chassis. Installing the system board 1. Align and place the system board onto the chassis and slide it back to its position. 2. Tighten the screws to secure the system board to the chassis. 3. Connect all the cables to the connectors on the system board. 4. Install the: a. b. c. d. e. f. g.
h. front bezel i. side cover 5. Flip the system to connect the SATA 0 cable to the connector on the system board. 6. Install the right side cover 7. Follow the procedure in After working inside your computer RAID controller battery Removing the RAID controller battery 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. To remove the RAID controller battery: a. Disconnect the RAID controller battery cable from the RAID controller card. b.
Removing and installing components
4 Technology and components This chapter details the technology and components available in the system. Topics: • • • • Memory configuration Technologies list MegaRAID 9440-8i and 9460-16i controller Teradici PCoIP Memory configuration This section provides information about the memory configuration for the Dell Precision Tower 7920 systems.
Technologies list This section provides information about the technologies that comes with the Dell Precision 7920 Tower. The following table lists the basic of technologies that are available on the Dell Precision 7920 Tower systems for Dell internal users only. Table 3. Technologies list No.
Table 3. Technologies list (continued) No. Category Technology Browser Path ● ● ● ● ● ● 7 Storage Quadro GV100 NVS 310 NVS 315 Quadro RTX 4000 Quadro RTX 5000/6000 GeForce RTX 2080 B SATA SAS Dell UltraSpeed Quad (PCIE M.2 Interposer) Dell UltraSpeed Duo (PCIE M.
SAS/SATA and use NVMe without major changes to other system configurations. The MegaRAID Tri-Mode storage adapters support both REFCLK and SRIS based NVMe x1, x2, and x4 devices. Key Features: ● Tri-Mode SerDes Technology enables the operation of NVMe, SAS or SATA devices in a single drive bay, allowing for endless design flexibility ● Supports 12, 6, and 3 Gb/s SAS and 6, 3 Gb/s SATA data transfer rates ● Up to 8 PCIe links. Each link supporting x4, x2, or x1 link widths, supporting 8.
Table 4. Features of MegaRAID 9440-8i and 9460-16i controller (continued) 9440-8i 9460-16i Host Bus Type PCIe 3.1 x8 PCIe 3.1 x8 Cache Protection N/A CacheVault CVPM05 Physical Dimensions 6.127” x 2.712” (155.65 mm x 68.90 mm) 6.127” x 2.712” (155.65 mm x 68.
To upgrade the PCoIP host driver software in this type of deployment, do one of the following: ● Connect to the host from a zero client. ● Upgrade the software while connecting to the host through another desktop-remoting protocol such as RDP or VNC. Installing the PCoIP Host Driver Software on a Host PC: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Download the PCoIP host driver software from the Teradici Support site (click Current PCoIP Product and Releases).
Refer the below image for an example of the Power remote connector labeled 30 on the system board diagram: Make sure the power management cable from the Teradici card is not plugged into either the two-pin Clear CMOS or Clear PSWD jumpers.
Plugging the power management cable into the Clear CMOS jumper will cause the BIOS to reset when sending a remote restart request to the Teradici card. You will then have to reset the time and BIOS settings. If the power management cable from the Teradici card is plugged into the Clear PSWD jumper, then the BIOS password will be cleared and a new one will need to be configured.
5 System specifications Topics: • • • • • • • • • • • • System specifications Memory specifications Video specifications Audio specifications Network specifications Card Slots Storage specifications External connectors Power specifications Physical specifications Environmental specifications CPU utilization matrix for AEP DIMM System specifications Feature Specification Processor type Intel Xeon Processor Scalable Family ● Intel Xeon Platinum 81xx processors ● Intel Xeon Gold 61xx processors ● Intel Xe
Features Specifications Minimum memory 16 GB (2x8 GB) i.e.
Network specifications Features Specifications Integrated Intel i219 and i210 Gigabit Ethernet controllers with Intel Remote Wake UP, PXE and Jumbo frames support. Network adaptor 2 (Optional) ● Intel i210 10/100/1000 single port PCIe (Gen 3 x1) gigabit network card. ● Intel X550-T2 10GbE dual port PCIe (Gen 3 x4) network card. ● Aquantia AQN-108 2.5Gbit/5Gbe single port PCIe (Gen3 x4) network card.
Power specifications Features Specifications Voltage Input voltage 100VAC - 240VAC Wattage ● 1400W at 181VAC - 240VAC ● 1100W at 100VAC - 180VAC Physical specifications Features Specifications Height 433mm Width 218mm Depth 566mm Weight (Minimum) With front bezel ● Min configuration 20.4 kg ● Typical configuration 24.3 kg ● Max configuration 33.
CPU utilization matrix for AEP DIMM NOTE: While using a 512 GB SKU configuration, you may see high CPU utilization (25% to 75%) persisting between 5 to 40 minutes when you boot into Windows 10 CPU utilization matrix System specifications 99
6 System Setup Topics: • • • • • • • • • • • • • • • General options System configuration Video Security Secure boot Performance Power management POST behavior Virtualization support Maintenance System logs Engineering configurations Updating the BIOS in Windows MegaRAID controller options System and setup password General options Table 5. General options Option Description System Information This section lists the primary hardware features of your computer.
Table 5. General options (continued) Option Description UEFI Boot Path Security Allows you to control whether the system prompts the user to enter the Admin password when booting to a UEFI boot path. Click one of the following options: ● Always, Except Internal HDD—Default ● Always ● Never System configuration Table 6. System Configuration Option Description Integrated NIC Allows you to configure the integrated network controller.
Table 6. System Configuration (continued) Option Description 7920 Tower ● ● ● ● ● ● ● ● ● SATA–0 SATA–1 SATA–2 SATA–3 SATA–4 SATA–5 SATA–6 SATA–7 SATA–8 Default Setting: All drives are enabled. NOTE: If the hard drives are connected to a RAID controller card, the hard drives will display {none} in all the fields. The hard drives can be seen in the RAID controller card BIOS. PCIe Drives Allows the enabling of Front PCIe attached Ports.
Table 6. System Configuration (continued) Option Description ● ● ● ● PCIe0 PCIe1 PCIe0_CPU1 PCIe1_CPU1 Default Setting: All options are enabled. Allows you to disable VMD for the PCIe Slots. ● Auto (Default On) ● Disabled Video Table 7. Video Option Description Primary Video Slot Allows you to configure primary boot video device. The options are: ● Auto (Default) ● SLOT 1 ● SLOT 2: VGA Compatible ● SLOT 3 ● SLOT 4 ● SLOT 5 ● SLOT 6 ● SLOT1_CPU2: VGA Compatible ● SLOT2_CPU2 Security Table 8.
Table 8. Security (continued) Option Description Computrace (R) Allows you to activate or disable the optional Computrace software. The options are: ● Deactivate (Default) ● Disable ● Activate Chassis Intrusion Allows you to control the chassis intrusion feature. Click one of the following options: ● Disabled—Default ● Enabled ● On-Silent CPU XD Support Allows you to enable the Execute Disable mode of the processor.
Table 10. Performance (continued) Option Description ● ● ● ● 5 6 7 8 NOTE: ● The options displayed could be different depending on the installed processor(s). ● The options depend on the number of cores supported by the installed processor (All, 1, 2, N-1 for N-Core Processors) Intel SpeedStep Allows you to enable or disable the Intel SpeedStep feature. Default Setting: Enable Intel SpeedStep C States Allows you to enable or disable the additional processor sleep states.
Power management Table 11. Power Management Option Description AC Recovery Specifies how the computer will respond when AC power is applied after a AC power loss. You can set the AC Recovery to: ● Power Off (Default) ● Power On ● Last Power State Auto On Time Allows you to set the time at which the computer must turn on automatically. The options are: ● Disabled (Default) ● Every Day ● Weekdays ● Select Days Deep Sleep Control Allows you to define the controls when Deep Sleep is enabled.
Virtualization support Table 13. Virtualization Support Option Description Virtualization This option specifies whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities provided by Intel Virtualization technology. ● Enable Intel Virtualization Technology - This option is enabled by default. VT for Direct I/O Enables or disables the Virtual Machine Monitor (VMM) from utilizing the additional hardware capabilities provided by Intel Virtualization technology for direct I/O.
Updating the BIOS in Windows It is recommended to update your BIOS (System Setup) when you replace the system board or if an update is available. NOTE: If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re enabled after the BIOS update is completed. 1. Restart the computer. 2. Go to Dell.com/support. ● Enter the Service Tag or Express Service Code and click Submit. ● Click Detect Product and follow the instructions on screen. 3.
Figure 3. DOS BIOS Update Screen Updating the Dell BIOS in Linux and Ubuntu environments If you want to update the system BIOS in a Linux environment, such as Ubuntu, see https://www.dell.com/support/article/ sln171755/. Flashing the BIOS from the F12 One-Time boot menu Updating your system BIOS using a BIOS update .exe file copied to a FAT32 USB key and booting from the F12 one time boot menu.
3. The Bios flash menu will open then click the Flash from file. 4.
5. Once the file is selected, Double click the flash target file, then press submit . 6. Click the Update BIOS then system will reboot to flash the BIOS.
7. Once complete, the system will reboot and the BIOS update process is completed. MegaRAID controller options During bootup, press + when prompted by the BIOS screen to get to the BIOS configuration utility. Table 17. MegaRAID configuration utility Option Description VD Mgmt (Virtual Device Management) This option is used to import the existing configuration to the RAID controller or clear the existing configuration.
Table 17. MegaRAID configuration utility (continued) Option Description Error and others. It also allows you to select a bootable virtual drive, restore default controller settings. Properties The Properties screen displays the controller properties like current versions of the controller BIOS, the MegaRAID firmware the Configuration Utility and the Boot block. NOTE: Press + to move to the next screen and Press + to go back to the previous screen.
1. In the System BIOS or System Setup screen, select System Security and press Enter. The System Security screen is displayed. 2. In the System Security screen, verify that Password Status is Unlocked. 3. Select System Password, alter or delete the existing system password and press Enter or Tab. 4. Select Setup Password, alter or delete the existing setup password and press Enter or Tab. NOTE: If you change the System and/or Setup password, re enter the new password when prompted.
7 Software This chapter details the supported operating systems along with instructions on how to install the drivers. Topics: • • • • • • • • • • Supported operating systems Downloading drivers Chipset driver Graphics controller driver USB drivers Network drivers Audio drivers Ports Storage controller drivers Other drivers Supported operating systems Table 19.
Chipset driver Verify if the Intel chipset and Intel Management Engine Interface drivers are already installed in the computer. Graphics controller driver Verify if the graphics controller driver is already installed in the computer. USB drivers Verify if the USB drivers are already installed in the computer.
Network drivers This system comes with both LAN and WiFi drivers and is able to detect the LAN and WiFi without going through the drivers installation. Audio drivers Verify if audio drivers are already installed in the computer. Ports Verify if the drivers for the ports are already installed in the computer. Storage controller drivers Verify if the storage controller drivers are installed in the computer.
Other drivers This section lists driver details for all the other components in the Device Manager. Security device drivers Verify if the security device drivers are installed in the computer. Software device drivers Verify if the software device drivers are installed in the computer. Human Interface Devices Verify if the Human Interface device drivers are installed in the computer. Portable Devices Verify if the portable device drivers are installed in the computer.
8 Troubleshooting The following section describes common troubleshooting steps that can be performed to resolve certain problems on your computer. Topics: • • Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0 Hard drive indicator codes Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0 You can invoke the ePSA diagnostics by either of the following ways : ● Press the F12 key when the system posts and choose ePSA or Diagnostics option on One Time Boot Menu.
Preboot blinking power button codes Table 20. Power button LED state Power Button LED State Description Off Power is Off. LED is blank. Blinking Amber Initial State of LED at power up. See the table below for Blinking Amber pattern diagnostic suggestions and possible failures. Blinking White System is in a low power state, either S1 or S3. This does not indicate a fault condition.
Table 21. Diagnostic Indicator table (continued) Power Light: Amber-White Blinking Amber/White Blinking Pattern Problem Description Suggested Resolution 2-2 2 amber blinks followed by a short pause, 2 white blinks, long pause, then repeats Motherboard: BIOS ROM failure ● System is in Recovery Mode. ● Flash latest BIOS version.
Table 21. Diagnostic Indicator table (continued) Power Light: Amber-White Blinking Amber/White Blinking Pattern Problem Description Suggested Resolution 3-2 3 amber blinks followed by a short pause, 2 white blinks, long pause, then repeats PCI Device or Video ● PCI device configuration activity is in progress or PCI device failure was detected. ● If you can assist to troubleshoot, narrow down the issue by reseating PCI card and removing one by one to determine which card failed.
Table 21. Diagnostic Indicator table (continued) Power Light: Amber-White Blinking Amber/White Blinking Pattern Problem Description Suggested Resolution 4-7 4 amber blinks followed by a short pause, 7 white blinks, long pause, then repeats System Side cover is missing ● System side cover(either left or right) is missing. ● Unplug power, Install back all side covers back to the chassis and plug in power. ● Contact Tech Support.
Figure 4. Hard drive indicators 1. hard drive activity LED indicator 2. hard drive status LED indicator 3. hard drive NOTE: If the hard drive is in the Advanced Host Controller Interface (AHCI) mode, the status LED indicator does not turn on. NOTE: Drive status indicator behavior is managed by Storage Spaces Direct. Not all drive status indicators may be used. Table 22.
9 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.
