Precision 3640 Tower Service Manual 0.0.0.0 Regulatory Model: D24M Regulatory Type: D24M004 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. © 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: Working on your computer........................................................................................... 6 Safety instructions.............................................................................................................................................................. 6 Before working inside your computer....................................................................................................................... 6 Safety precautions...................
Removing the memory module.................................................................................................................................38 Installing the memory module...................................................................................................................................38 Speaker................................................................................................................................................................................
Removing the system board..................................................................................................................................... 90 Installing the system board....................................................................................................................................... 92 System board layout...................................................................................................................................................
1 Working on your computer Safety instructions Prerequisites 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. ● A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.
CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device. 5. Disconnect your computer and all attached devices from the electrical outlets. 6. Press and hold the power button while the computer is unplugged to ground the system board.
The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or "walking wounded") failure. Perform the following steps to prevent ESD damage: ● Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage.
ESD protection summary It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.
2 Technology and components This chapter details the technology and components available in the system. DDR4 DDR4 (double data rate fourth generation) memory is a higher-speed successor to the DDR2 and DDR3 technologies and allows up to 512 GB in capacity, compared to the DDR3's maximum of 128 GB per DIMM. DDR4 synchronous dynamic random-access memory is keyed differently from both SDRAM and DDR to prevent the user from installing the wrong type of memory into the system.
Figure 3. Curved edge Memory Errors Memory errors on the system display 2,3 failure code. If all memory fails, the LCD does not turn on. Troubleshoot for possible memory failure by trying known good memory modules in the memory connectors on the bottom of the system or under the keyboard, as in some portable systems. NOTE: The DDR4 memory is imbedded in board and not a replaceable DIMM as shown and referred.
3. RAID 5 (Striping with Parity): In this RAID level, data is stripped into blocks and spread across three or more storage devices. Each block contains the data and a parity for fault tolerance. In an event of a drive failure, the parity helps build the lost piece of data. To further enhance the write performance, IRST uses Volume Write-Back Cache and Coalescer.
● IRST software ● Hard drive partition with at least 5 MB of free space Features of RAID-enabled systems: ● Intel Rapid Recover Technology - This technology provides full data redundancy by copying data from a designated source drive (master disk) to a designated destination drive (recovery disk). Data updates of recovery volumes can be continuous or on request. ● Intel Rapid RAID : - This technology allows creation of RAID 0, RAID 1, RAID 5, and RAID 10 volumes on desktop and mobile platforms.
● Automotive Connection System - New cables and connectors for automotive video systems, designed to meet the unique demands of the motoring environment while delivering true HD quality Advantages of HDMI ● Quality HDMI transfers uncompressed digital audio and video for the highest, crispest image quality.
3 Major components of your system 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Cover System fan IO panel Power button module Optical drive Hard drive Bezel Hard drive Chasis Power supply unit System board Front fan Processor Heatsink assembly 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.
4 Disassembly and reassembly Recommended tools The procedures in this document require the following tools: ● Phillips # 1 screwdriver ● Small flat blade screwdriver Screw list The following table provides the list of screws that are used for securing different components to the computer. Table 1.
Chassis rubber feet Removing the chassis rubber feet Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Pull one end of rubber feet out of the slot [1] and slide the rubber feet to remove it from the system [2]. Figure 4.
Figure 5. Rear rubber feet removal Installing the chassis rubber feet Steps 1. Insert one end of the rubber feet into the slot [1] and slide it to secure it to the system [2] and press the other end to secure it to the system [3].
Figure 6.
Figure 7. Rear rubber feet installation 2. Follow the procedure in After Working Inside Your Computer. Cover Removing the cover Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Pull the release latch to release the cover [1]. NOTE: Release latch may have been secured with a security screw. Remove the security screw to release the cover.
3. Rotate the cover and lift the cover to remove it from the computer [2,3] Installing the cover Steps 1. Align the hooks on the cover with the tabs on the chassis of the computer. 2. Rotate the cover until it clicks into place.
3. Follow the procedure in After Working Inside Your Computer. SD card—optional SD card is an optional component. You will see a SD card only in systems shipped with a WWAN card. Removing the SD card Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Pull the SD card out of the system.
Installing the SD card Steps 1. Insert the SD card into the SD card slot on the system.
2. Follow the procedure in After Working Inside Your Computer. Bezel Removing the front bezel Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the cover. 3. To remove the front bezel: a. Lift the retention tabs [1] to release the front bezel. b. Rotate and pull the front bezel to release the front bezel from the slots on the chassis [2,3].
Installing the front bezel Steps 1. Hold the bezel and ensure that the hooks on the bezel align with notches on the computer. 2. Rotate the front bezel toward the computer. 3. Press the front bezel until the tabs click into place. 4. Install the cover. 5. Follow the procedure in After Working Inside Your Computer. Hard drive Removing the 3.5-inch hard drive Steps 1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the cover. 3. Disconnect the data cable and the power cable from the hard drive [1]. 4. Press the blue securing bracket tabs [2] and lift the hard drive bracket out of the hard drive bay [3]. 5. Flex the hard drive bracket [1] and lift the hard drive from the hard drive bracket [2]. 6. To remove additional hard drive (if available), repeat steps from 3 to 5. Installing the 3.5-inch hard drive Steps 1.
2. Slide the hard drive assembly into the hard drive bay [1]. 3. Connect the data cable and the power cable to the hard drive [2]. 4. To install additional hard drive, follow the steps from 1 to 3. 5. Install the cover. 6. Follow the procedure in After Working Inside Your Computer. Removing the 2.5-inch hard drive Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the cover.
3. Disconnect the data cables and the power cables from the respective connectors on the hard drives [1]. 4. Press the blue securing bracket tabs [2] and lift the hard drive bracket out of the front hard drive bay [3]. 5. Disconnect the data cables and the power cables from the respective connectors on the hard drives [1]. 6. Press the blue securing bracket tabs and lift the hard drive bracket out of the bottom hard drive bays [2]. 7. Disconnect the SATA power cable from the connectors on the PSU [3].
8. Flex the hard drive bracket [1], lift the hard drive [2], and then slide out from the hard drive bracket [3]. NOTE: Follow the same procedure to remove another hard drive on the other side of the bracket. Installing the 2.5-inch hard drive Steps 1. Insert the holes on one side of the hard disk into the pins on the hard drive bracket [1], and then place the hard drive into the bracket such that the pins on other side of the bracket is aligned with the holes on the hard drive [2].
2. Slide the hard drive assembly into the front hard drive bay [1]. 3. Connect the data cables and the power cables to the respective connectors on the hard drives [2]. 4. Slide the hard drive assembly into the bottom hard drive bay [1]. 5. Connect the data cables and the power cables to the respective connectors on the hard drives [2]. 6. Route the power SATA cables along the guide to connect to the PSU [3].
7. Install the cover. 8. Follow the procedure in After Working Inside Your Computer. PSU hinge Opening the PSU hinge Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the cover: 3. Unlock the PSU release latches [1,2] 4. Rotate the PSU hinge as shown in the figure [3].
Closing the PSU hinge Steps 1. Rotate the PSU hinge [1] 2. Unlock the PSU release latches to secure the PSU hinge to the system [2,3]. 3.
4. Follow the procedure in After Working Inside Your Computer. Graphics card Removing the graphics card About this task NOTE: You may see a PCIe card installed in some configurations. Follow the same steps except step 4 to remove the expansion card. Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. Disconnect the VGA power cable from the graphics cards in a dual graphics card configuration [1]. 4.
9. Push the card retention latch away from the card [1] and lift the graphics card out of the computer [2].
Installing the graphics card About this task NOTE: Follow the same steps except step 2 to install the expansion card.
Steps 1. Insert the graphics card to the connector on the system board. Figure 8. Single graphics card Figure 9. Dual graphics card 2. Connect the graphics-card power cable to the connector on the graphics card for a single graphics card configuration [1].
3. Insert the tab on the PCIe card holder into the slot on the chassis [2] and press until it is secured to the graphics card [3]. 4. Close the PSU hinge. 5. Connect the VGA power cables to the dual graphics card configuration: a. Unroute the VGA power cables from the securing tabs on the PSU [1]. b. Lift the plastics latch to free the cables [2]. c. Connect the VGA power cables to the connectors on both the graphics card [3]. 6. Install the Cover. 7.
Memory module Removing the memory module Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the Cover. 3. Press the memory module retention tabs on each side of the memory module [1]. 4. Lift the memory module out of the connectors on the system board [2]. Installing the memory module Steps 1. Align the notch on the memory module with the tab on the memory module connector. 2. Press the memory module until the retention tabs clicks into place. 3. Install the cover. 4.
Speaker Removing speaker Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Cover b. PSU hinge 3. To remove speaker for system shipped with system configuration : a. Disconnect the speaker cable from the system board [1]. b. Unroute the speaker cable from the tabs on the system board [2,3]. c. Press the release tab and pull the speaker out from front of the system chassis [4]. Installing the speaker Steps 1. To install speaker for system : a.
2. Close the PSU hinge. 3. Install the Cover. 4. Follow the procedure in After working inside your computer. Coin cell battery Removing the coin cell battery Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. Open the PSU hinge. 4. To remove the coin cell battery: a. Press the release latch until the coin cell battery pops out [1]. b. Remove the coin cell battery from the connector on the system board [2].
Installing the coin cell battery Steps 1. Hold the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector [1]. 2. Press the battery into the connector until it locks into place [2].
3. Close the PSU hinge. 4. Install the Cover. 5. Follow the procedure in After working inside your computer. Power supply unit Removing the power supply unit Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove: a. Cover b. Heatsink assembly 3. Open the PSU hinge 4. Disconnect the following cables: ● : a. b. c. d. 42 Disconnect the optical-drive power cable from the optical drive [1]. Disconnect the CPU-power cable and system board power cable from the system board [2,3].
5. Close the PSU hinge. 6. To remove the power supply unit (PSU): a. Disconnect the hard-disk power cable [1]. NOTE: There could be up to four hard-disk power cables depending on the quantity of hard-disk drive installed. b. Remove the two #6-32x1/4'' screws that secure the power-supply bracket to the chassis [2] and lift the power-supply bracket from the system [3]. c. Remove the four #6-32x1/4'' screws that secure the power-supply unit to the chassis [4]. d. Lift the PSU off the chassis [5].
Installing the power supply unit Steps 1. Insert the PSU into the PSU slot and slide it towards the back of the computer until it clicks into place [1]. 2. Replace the four #6-32x1/4'' screws to secure the PSU to the computer [2]. 3. Place the power supply bracket [3] and tighten the two #6-32x1/4'' screws to secure the PSU to the computer [4]. 4.
5. Open the PSU hinge. 6. Connect the following cables: ● For systems shipped with 95 W CPU system configuration: a. b. c. d. e. Route the CPU power cable through the routing guide on the chassis [1]. Connect the graphics-card power cable [2]. Connect the system-board power cable [3] Connect the CPU power cable to the connector on the system board [4]. Connect the optical-drive power cable to the connector on the optical drive [5].
7. Install the: a. Heatsink assembly b. Cover 8. Close the PSU hinge. 9. Follow the procedure in After Working Inside Your Computer. Optical drive Removing the optical drive Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the cover. 3. Front bezel 4. Open the PSU hinge. 5. Disconnect the data cable and the power cable from the optical drive [1]. 6. Hold and pull the optical drive latch to unlock the optical drive [2].
7. Slide the optical drive from the front of the computer. 8. Remove the M2x2.5 screw that secures the optical-drive bracket to the optical drive [1] and remove the optical-drive bracket [2].
Installing the optical drive Steps 1. Align the screw hole on the optical-drive bracket with the screw hole on the optical drive [1] and replace the M2x2.5 screw to secure the optical-drive bracket to the optical drive [2]. 2. Slide the optical drive into the drive bay from the front of the computer until it is secured. 3. Connect the data cable and power cable to the optical drive.
4. Close the PSU hinge. 5. Install the Front bezel 6. Install the cover. 7. Follow the procedure in After Working Inside Your Computer. WLAN module and SMA antenna Removing WLAN module and SMA antenna Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a. Cover b. PSU hinge 3. Remove the single M2x3.5 screw that secures the WLAN card to the system board, un-route the antenna cables from the rubber guides on the system board [1]. 4.
5. Remove the WLAN card from the system board [3]. 6. Remove the plastic bracket from the top of the antenna connector [4]. 7. Gentrly remove the antenna cables from the connectors on the WLAN card [5]. 8. Separate the WLAN module and SMA antenna [6].
Installing WLAN module and SMA antenna Steps 1. Assemble the WLAN module with the SMA antenna. 2. Connect the antenna cable to the WLAN module. 3. Replace the plastic bracket on the antenna connectors of the WLAN module. 4. Insert the WLAN module into the M.2 slot on the system board. 5. Replace PCIe bracket into its slot on the chassis. 6. Route the antenna cables through the rubber guides on the system board and replace the single M2x3.5 screw securing the WLAN module to the system board.
7. Install the: a. PSU hinge b. Cover 8. Follow the procedure in After Working Inside Your Computer. IO panel Removing the IO panel Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Cover b. Front bezel c. Optical drive 3. Open the PSU hinge. 4. Disconnect the IO audio cable from the connector on the system board [1] and unroute the cable from routing guides next to the system board on the chassis [2].
5.
6. Remove the #6-32x1/4'' screw that secures the IO panel to the chassis.
7. Lift the IO panel to release the tabs on the IO panel from the slots on the chassis.
8. Pull the IO panel along with the cables to remove it from the IO panel slot on the chassis.
Installing the IO panel Steps 1. Insert the cables through the IO panel slot on the chassis.
2. Insert the IO-panel tabs into the slots on the system [1] and tilt the IO panel to secure it to the system [2].
3. Replace the #6-32x1/4'' screw to secure the IO panel to the system.
4.
5. Route the IO audio cable through the routing clip next to the system board on the chassis [1]. 6. Connect the IO audio cable to the connector on the system board [2].
7. Install the: a. Optical drive b. Front bezel c. Cover 8. Close the PSU hinge. 9. Follow the procedure in After Working Inside Your Computer. Solid state drive Removing the PCIe SSD card Prerequisites NOTE: The instructions are applicable for removal of M.2 SATA SSD card also. Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a. cover. b. Graphics card. 3. Open the PSU hinge. 4.
a. Remove the M2x2.5 screw that secures the PCIe SSD card [1]. b. Slide and lift the PCIe SSD card from the computer [2]. c. Remove the SSD thermal pad [3]. Figure 10. 2242 SSD Installing the PCIe SSD card About this task NOTE: The instructions are applicable for installation of M.2 SATA SSD card also.
Steps 1. Place the SSD thermal pad into the slot on the system board [1] . 2. Slide the PCIe SSD card into the slot and tighten the M2x2.5 screw to secure the SSD card to the system board [2,3]. Figure 11. 2242 SSD 3. Install the: a. Cover. b. Graphics card. 4. Close the PSU hinge. 5. Follow the procedure in After Working Inside Your Computer.
Power button module Removing power button module About this task Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Cover b. Front bezel c. IO panel 3. Open the PSU hinge. 4. Disconnect the power button module cable from the connector on the system board [1]. 5. Remove the button module cable from the routing guides next to the system board on the chassis [2,3]. 6. Remove the adhesive tape that secures the power button module to the chassis [1]. 7.
Installing power button module About this task Steps 1. Insert the power button module into its slot on the system [1] and press the notches and secure it to the system [2]. 2. Affix the adhesive tape to secure the power button module to the system [3].
3. Route the power button module cable through the routing clips on the system [1,2]. 4. Connect the power button module cable to the connector on the system board [3].
5. Install the: a. b. c. d. IO panel Optical drive Front bezel Cover 6. Close the PSU hinge. 7. Follow the procedure in After Working Inside Your Computer. Heatsink assembly Removing heatsink assembly - 65 W or 80 W CPU About this task These steps applies to system configurations shipped with 65 W or 80 W CPU. Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the Cover. 3. Open the PSU hinge. 4. To remove the heat sink assembly: a.
b. Loosen the 4 captive screws that secure the heat sink assembly [2] and lift it from the system [3]. NOTE: Loosen the screws in a sequential order (1,2,3,4) as mentioned on the system board. Removing blower and heat sink assembly — 125 W CPU About this task These steps applies to system configurations shipped with 125 W CPU. Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. Open the PSU hinge. 4.
6. Loosen the captive screws that secure the heat-sink assembly to the system board [1]. 7. Lift the heat-sink assembly off the system board [2]. 8. Disconnect the blower cable from the system board.
Installing heatsink assembly - 65 W or 80 W CPU About this task These steps applies to system configurations shipped with 65 W or 80 W CPU. Steps 1. Align the heat sink assembly with the screw holders on the system board and place it on the processor [1]. 2. Tighten the 4 captive screws to secure the heat sink assembly to the system board [2]. NOTE: Tighten the screws in a sequential order (1,2,3,4) as mentioned on the system board. 3.
4. Close the PSU hinge. 5. Install the cover. 6. Follow the procedure in After working inside your computer. Installing blower and heat sink assembly — 125 W CPU About this task These steps applies to system configurations shipped with 125 W CPU. Steps 1. Route the blower cable through the heat sink assembly [1] and connect the blower cable to the connector on the system board [2].
2. Place the heat-sink assembly over the processor. 3. Align the captive screws on the heat-sink assembly with the screw holes on the system board. 4. Tighten the captive screws that secure the heat-sink assembly to the system board. 5. Align the screw holes on the blower to the screw holes on the heat-sink assembly and place the blower over the heat-sink assembly [1]. 6. Replace the screws that secure the blower to the heat-sink assembly [2].
7. Close the PSU hinge. 8. Install the cover. 9. Follow the procedure in After working inside your computer. Voltage regulator heat sink Removing VR heatsink Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. b. c. d. Cover Graphics card SSD Heatsink assembly 3. Open the PSU hinge. 4. Loosen the captive screws that secure the VR heatsink to the system board [1]. 5. Lift the VR heatsink from the system board [2].
Figure 12. VR heatsink assembly for systems shipped with 65 W or 80 W CPU Figure 13.
Installing VR heatsink Steps 1. Align the screws on the heatsink with the screw holders on the system board and place the VR heatsink on the system board [1]. 2. Tighten the captive screws that secure the VR heatsink to the system board [2]. Figure 14.
Figure 15. VR heatsink assembly for systems shipped with 125 W CPU 3. Install the: a. b. c. d. Heatsink assembly SSD Graphics card Cover 4. Close the PSU hinge 5. Follow the procedure in After working inside your computer. Front fan Removing front fan Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a. Cover b. PSU hinge 3. Unroute the hard drive card cables from over the fan bracket.
4. Disconnect the front fan cable from the system board. 5. To release the front fan from the bracket, push the tab securing the front fan to the bracket.
6. Lift the front fan off the computer. 7. Release the fan cable from the hook on the fan frame [1] and flip over [2]. 8. Pry from all sides [3] and remove the fan from the frame [4].
Installing front fan Steps 1. Replace the fan into the frame [1] and flip over [2]. 2. Route the fan cable through the hook on the fan frame [3]. 3. Replace the front fan on the fan bracket. 4. Press the tab to secure the front fan to the bracket on the computer.
5. Connect the front fan cable to the system board. 6. Route the hard drive card cables from over the front fan bracket.
System fan Removing system fan Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a. Cover b. PSU hinge c. Heatsink assembly 3. Disconnect the system fan cable from the connector on the system board. 4. Remove the #6-32x1/4'' screw that secures the system-fan bracket to the chassis [1]. 5. Slide the system-fan assembly towards the front of the computer to release it from the chassis and pull the system-fan assembly to remove it from the system [3].
6. Unroute the system fan cable from the routing channel on the system-fan bracket [1]. 7. To release the system fan from the bracket, pull the rubber grommets and remove the grommets securing the system fan to the bracket [2]. 8. Lift the system fan off the system-fan bracket [3]. Figure 16. Removing the chassis fan Installing system fan Steps 1.
3. Align the grooves on the system-fan assembly with the holders on the chassis and slide the assembly [1]. 4. Replace the #6-32x1/4'' screw to secure the system-fan bracket to the chassis [2]. 5. Connect the system fan cable to the connector on the system board [3]. 6. Install the: a. Heatsink assembly b. PSU hinge c. Cover 7. Follow the procedure in After working inside your computer.
Optional IO card Removing optional IO card About this task NOTE: You may see one of these cards-HDMI/DisplayPort/VGA/Type-C based on the additional component you may have ordered with the system. Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. Open the PSU hinge. 4. To remove the optional IO card: a. Disconnect the IO card cable from the connector on the system board [1]. b. Remove the two M3X3 screws that secure the IO card to the system [2]. c.
2. Insert the IO card into its slot from the inside of your computer [1] and replace the two M3X3 screws to secure the IO card to the system [2]. 3. Connect the IO card cable to the connector on the system board [3]. 4. Close the PSU hinge. 5. Install the cover.
Processor Removing the processor Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a. Cover b. PSU hinge c. Heatsink assembly 3. To remove the processor: a. Release the socket lever by pushing the lever down and out from under the tab on the processor shield [1]. b. Lift the lever upward and lift the processor shield [2]. c. Lift the processor out of the socket [3]. Installing the processor Steps 1.
4. Install the: a. Heatsink assembly b. PSU hinge c. Cover 5. Follow the procedure in After Working Inside Your Computer. Intrusion switch Removing intrusion switch Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. Open the PSU hinge. 4. To remove the intrusion switch: a. Disconnect the intrusion switch cable from the connector on the system board [1]. b. Unroute the intrusion switch cable from the routing clips on the chassis [2]. c.
Installing intrusion switch Steps 1. Slide the intrusion switch into the slot on the computer [1]. 2. Route the intrusion switch cable through the routing clips on the chassis [2]. 3. Connect the intrusion switch cable to the connector on the system board [3].
4. Close the PSU hinge. 5. Install the cover. 6. Follow the procedure in After working inside your computer. System board Removing the system board Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a. b. c. d. e. f. g. h. i. j. Cover PSU hinge Memory module Graphics card SSD WLAN module and SMA antenna Heatsink assembly VR heat sink (for models shipped with 95 W heatsink assembly) Optional IO card Processor 3.
● ● ● ● Type-C cable [2] IO USB cable [3] Primary HDD SATA cable [4] ODD SATA cable [5] 5. Remove the following cables: ● Speaker cable [1] ● IO audio cable [2] 6. Remove the 8 #6-32x1/4'' screws that secure the system board to the chassis.
7. Lift the system board at an angle and remove it from the computer. Installing the system board Steps 1. Slide the I/O ports on the system board into the slots on the chassis and place the system board on the chassis [1]. Align the screw holes on the system board with the screw holes on the chassis [2].
2. Replace the 8 #6-32x1/4'' screws that secure the system board to the chassis. 3.
4. Route and connect the following cables: ● ● ● ● ● ODD SATA cable [1] Primary HDD SATA cable [4] IO USB cable [3] Type-C cable [4] SD card cable [5] 5.
● CPU power cable [2] ● System fan cable, intrusion cable, and IO panel cable [3] 6. Install the: a. b. c. d. e. f. g. h. i. j. Optional IO card Processor VR heat sink (for models shipped with 95W heat sink assembly) Heatsink assembly (for models shipped with 95W heat sink assembly) WLAN module and SMA antenna (for models shipped with 95 W heat sink assembly) SSD Graphics card Memory module PSU hinge Cover 7. Follow the procedure in After Working Inside Your Computer.
System board layout This topic illustrates the system board layout and calls out the ports and connectors on the system board. 1. Optional I/O card connector 2. ATX PSU power connector : ATX CPU 3. CPU socket 4. Coin-cell battery 5. Memory module connector 6. Top-fan connector 7. Intrusion switch connector 8. Power button module connector: PWR SW 9. ATX PSU power connector : ATX SYS 10. SD Card reader connector 11. Front panel USB Type-C connector 12. Front panel USB Type-A connector 13. SATA 3.
28. M.
5 Troubleshooting Real-Time Clock (RTC Reset) The Real Time Clock (RTC) reset function allows you or the service technician to recover Dell Inspiron, systems from No POST/No Power/No Boot situations. The legacy jumper enabled RTC reset has been retired on these models. Start the RTC reset with the system powered off and connected to AC power. Press and hold the power button for thirty (30) seconds. The system RTC Reset occurs after you release the power button.
Table 3.
Table 4. Diagnostic error messages (continued) Error messages Description THE FILE BEING COPIED IS TOO LARGE FOR THE DESTINATION DRIVE The file that you are trying to copy is too large to fit on the disk, or the disk is full. Try copying the file to a different disk or use a larger capacity disk. A FILENAME CANNOT CONTAIN ANY OF THE FOLLOWING CHARACTERS: \ / : * ? " < > | - Do not use these characters in filenames. GATE A20 FAILURE A memory module may be loose.
Table 4. Diagnostic error messages (continued) Error messages Description LICENSED CONTENT IS NOT ACCESSIBLE IN MEDIADIRECT Dell MediaDirect cannot verify the Digital Rights Management (DRM) restrictions on the file, so the file cannot be played. MEMORY ADDRESS LINE FAILURE AT ADDRESS, READ VALUE EXPECTING VALUE A memory module may be faulty or improperly seated. Reinstall the memory module or, if necessary, replace it.
Table 4. Diagnostic error messages (continued) Error messages Description TIME-OF-DAY NOT SET-PLEASE RUN THE SYSTEM SETUP PROGRAM The time or date stored in the system setup program does not match the system clock. Correct the settings for the Date and Time options. TIMER CHIP COUNTER 2 FAILED A chip on the system board may be malfunctioning. Run the System Set tests in Dell Diagnostics.
Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state.
Steps 1. Turn off your computer. 2. Turn off the modem. 3. Turn off the wireless router. 4. Wait for 30 seconds. 5. Turn on the wireless router. 6. Turn on the modem. 7. Turn on your computer.
6 Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 6. Self-help resources Self-help resources Resource location Information about Dell products and services https://www.dell.com/ Dell Support Tips Contact Support In Windows search, type Contact Support, and press Enter. Online help for operating system ● Windows: https://www.dell.com/support/windows ● Linux: https://www.dell.
Contacting Dell Dell provides several online and telephone-based support and service options. If you do not have an active Internet connection, you can find contact information about your purchase invoice, packing slip, bill, or Dell product catalog. Availability varies by country/region 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 https://www.dell.com/support/. 2.
A Cable cover The cable cover for Precision Tower 3640 helps protect ports and cables connected to the system. About this task Follow these steps to install the cable cover on the system chassis. NOTE: Images shown below are for representation only and may vary depending on the system's configuration. Steps 1. Insert the tab on the security-lock metal bracket into the slot on the rear side of the system [1] and rotate to align the holes on the metal bracket with screw holders on the chassis [2] 2.
4. Lift the tab [1] to release and pull the cable tie from the slot on the cable release latch [2]. 5. Align the cable release latch on the system chassis slot [1]. Tighten the screw to secure the cable release latch to the system chassis [2].
6. Route the cables through the slot of the cable cover [1], and connect them to their respective ports on the system [2]. Secure the cable with the cable tie and lock the tab in place [3]. CAUTION: Take care not to break or bend the delicate plastic hooks. 7. Align the plastic hooks of the cable cover to the slots on the system .
8. Gently press down on the cable cover until it clicks into place [1]. Slide the latch towards the chassis [2] to lock the cable cover in place. NOTE: For added security, use the Padlock ring to secure the system. 9. To remove the cable cover: a. Slide the latch away from the chassis to unlock the cable cover [1]. b. Lift the cable cover away from the system chassis [2].
10. Pull the cable cover to release it from the chassis. 11. Open the tab and unroute the cables from cable tie [1], disconnect the cables from the ports on the system [2]. Remove the cables from the slot of the cable cover [3].
Cable cover
B Dust filter The dust filter for the Precision Tower 3640 helps protect the system from fine dust particles. After installation of the dust filter, the BIOS can be enabled to generate a preboot reminder to clean or replace the dust filter based on the time interval set. About this task Follow these steps to install the dust filter: Steps 1. Align the plastic tabs of the dust filter to the slots on the system chassis and gently press to ensure that the dust filter fits firmly onto the system. 2.
3. Restart the system and press F2 to enter the BIOS Setup menu. 4. In the BIOS Setup menu, navigate to System Configuration > Dust Filter Maintenance and select from any of the following intervals: 15, 30, 60, 90, 120, 150, or 180 days. NOTE: Default setting: Disabled. NOTE: Alerts are generated only during a system reboot and not during normal OS operation. Next steps To clean the dust filter, brush or gently vacuum and then wipe down the external surfaces with a moist cloth.
