hit counter script
Dell Precision 3640 Tower Service Manual
  1. Manuals
  2. Brands
  3. Dell Manuals
  4. Desktop
  5. Precision 3640 Tower
  6. Service manual

Dell Precision 3640 Tower Service Manual

Hide thumbs Also See for Precision 3640 Tower:
Table of Contents

Advertisement

Quick Links

Precision 3640 Tower
Service Manual
0.0.0.0
Regulatory Model: D24M
Regulatory Type: D24M004
May 2020
Rev. A00

Advertisement

Table of Contents
loading

Related Manuals for Dell Precision 3640 Tower

Summary of Contents for Dell Precision 3640 Tower

  • Page 1 Precision 3640 Tower Service Manual 0.0.0.0 Regulatory Model: D24M Regulatory Type: D24M004 May 2020 Rev. A00...
  • Page 2 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. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Contents 1 Working on your computer......................6 Safety instructions.................................6 Before working inside your computer........................... 6 Safety precautions................................7 Electrostatic discharge—ESD protection........................7 ESD field service kit ................................8 Transporting sensitive components..........................8 After working inside your computer..........................9 2 Technology and components......................10 DDR4......................................10 Intel Rapid Storage Technology (Intel RST)........................11 Advantages of DisplayPort over USB Type-C........................13...
  • Page 4 Removing the memory module............................ 38 Installing the memory module............................38 Speaker....................................39 Removing speaker................................. 39 Installing the speaker..............................39 Coin cell battery...................................40 Removing the coin cell battery............................ 40 Installing the coin cell battery............................41 Power supply unit................................42 Removing the power supply unit..........................42 Installing the power supply unit ...........................44 Optical drive..................................
  • Page 5 Diagnostic error messages..............................98 System error messages..............................101 Recovering the operating system.............................101 Flashing BIOS (USB key)..............................102 Flashing the BIOS................................102 WiFi power cycle................................102 6 Getting help and contacting Dell....................103 A Cable cover ..........................105 B Dust filter ..........................111 Contents...

  • Page 6: Working On Your Computer

    Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

  • Page 7: Safety Precautions

    Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.

  • Page 8: Esd Field Service Kit

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.

  • Page 9: After Working Inside Your Computer

    4. Keep the load close. The closer it is to your spine, the less force it exerts on your back. 5. Keep your back upright, whether lifting or setting down the load. Do not add the weight of your body to the load. Avoid twisting your body and back.

  • Page 10: Technology And Components

    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.

  • Page 11: Intel Rapid Storage Technology (Intel Rst)

    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.
  • Page 12 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.

  • Page 13: Advantages Of Displayport Over Usb Type-C

    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. •...
  • Page 14 • HDMI combines video and multichannel audio into a single cable, eliminating the cost, complexity, and confusion of multiple cables currently used in A/V systems • HDMI supports communication between the video source (such as a DVD player) and the DTV, enabling new functionality Technology and components...

  • Page 15: Major Components Of Your System

    14. 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.

  • Page 16: Disassembly And Reassembly

    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.
  • Page 17 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. Front rubber feet removal Disassembly and reassembly...

  • Page 18: Installing The Chassis Rubber Feet

    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].
  • Page 19 Figure 6. Front rubber feet installation Disassembly and reassembly...

  • Page 20: Cover

    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.

  • Page 21: Installing 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. Disassembly and reassembly...

  • Page 22: Sd Card-Optional

    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.

  • Page 23: Installing The Sd Card

    Installing the SD card Steps 1. Insert the SD card into the SD card slot on the system. Disassembly and reassembly...

  • Page 24: Bezel

    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.

  • Page 25: Installing The Front Bezel

    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.

  • Page 26: Installing The 3.5-Inch Hard Drive

    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.

  • Page 27: Removing The 2.5-Inch Hard Drive

    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.
  • Page 28 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.

  • Page 29: Installing The 2.5-Inch Hard Drive

    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.
  • Page 30 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.

  • Page 31: Psu Hinge

    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.

  • Page 32: Closing The Psu Hinge

    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. Install the cover: Disassembly and reassembly...

  • Page 33: Graphics Card

    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.
  • Page 34 9. Push the card retention latch away from the card [1] and lift the graphics card out of the computer [2]. Disassembly and reassembly...

  • Page 35: Installing The Graphics Card

    Installing the graphics card About this task NOTE: Follow the same steps except step 2 to install the expansion card. Disassembly and reassembly...
  • Page 36 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]. Disassembly and reassembly...
  • Page 37 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 hinge. 5. Connect the VGA power cables to the dual graphics card configuration: a.

  • Page 38: Memory Module

    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.

  • Page 39: Speaker

    Speaker Removing speaker Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the: Cover PSU hinge 3. To remove speaker for system shipped with system configuration : a. Disconnect the speaker cable from the system board [1]. b.

  • Page 40: Coin Cell Battery

    2. Close the 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.

  • Page 41: Installing The Coin Cell Battery

    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]. Disassembly and reassembly...

  • Page 42: Power Supply Unit

    3. Close the 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: Cover Heatsink assembly 3.
  • Page 43 5. Close the 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].

  • Page 44: Installing The Power Supply Unit

    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.
  • Page 45 5. Open the hinge. 6. Connect the following cables: • For systems shipped with 95 W CPU system configuration: a. Route the CPU power cable through the routing guide on the chassis [1]. b. Connect the graphics-card power cable [2]. c.

  • Page 46: Optical Drive

    7. Install the: Heatsink assembly Cover 8. Close the 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. Front bezel 4.
  • Page 47 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]. Disassembly and reassembly...

  • Page 48: Installing The Optical Drive

    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.

  • Page 49: Wlan Module And Sma Antenna

    4. Close the 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.
  • Page 50 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]. Disassembly and reassembly...

  • Page 51: Installing Wlan Module And Sma Antenna

    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.

  • Page 52: Io Panel

    7. Install the: PSU hinge 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: Cover Front bezel Optical drive 3.
  • Page 53 5. Disconnect the following cables from their respective connectors on the system board: • System board power connector cable [1,2] • SD card cable [3] • Type-C cable [4] • IO USB cable [5] • Unroute the cables [6] Disassembly and reassembly...
  • Page 54 6. Remove the #6-32x1/4'' screw that secures the IO panel to the chassis. Disassembly and reassembly...
  • Page 55 7. Lift the IO panel to release the tabs on the IO panel from the slots on the chassis. Disassembly and reassembly...
  • Page 56 8. Pull the IO panel along with the cables to remove it from the IO panel slot on the chassis. Disassembly and reassembly...

  • Page 57: Installing The Io Panel

    Installing the IO panel Steps 1. Insert the cables through the IO panel slot on the chassis. Disassembly and reassembly...
  • Page 58 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]. Disassembly and reassembly...
  • Page 59 3. Replace the #6-32x1/4'' screw to secure the IO panel to the system. Disassembly and reassembly...
  • Page 60 4. Route the cables through the routing channel [1] and connect the following cables to their respective connectors on the system board: • IO USB cable [2] • Type-C cable [3] • SD card cable [4] • System board power connector cable [5] Disassembly and reassembly...
  • Page 61 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]. Disassembly and reassembly...

  • Page 62: Solid State Drive

    7. Install the: Optical drive Front bezel Cover 8. Close the 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.

  • Page 63: Installing The Pcie Ssd Card

    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.
  • Page 64 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.

  • Page 65: Power Button Module

    Power button module Removing power button module About this task Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the: Cover Front bezel IO panel 3. Open the hinge. 4. Disconnect the power button module cable from the connector on the system board [1]. 5.

  • Page 66: Installing Power Button Module

    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]. Disassembly and reassembly...
  • Page 67 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]. Disassembly and reassembly...

  • Page 68: Heatsink Assembly

    5. Install the: IO panel Optical drive Front bezel Cover 6. Close the 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.

  • Page 69: Removing Blower And Heat Sink Assembly - 125 W Cpu

    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.
  • Page 70 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. Disassembly and reassembly...

  • Page 71: Installing Heatsink Assembly - 65 W Or 80 W Cpu

    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.

  • Page 72: Installing Blower And Heat Sink Assembly - 125 W Cpu

    4. Close the 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.
  • Page 73 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].

  • Page 74: Vr Heat Sink

    7. Close the hinge. 8. Install the cover. 9. Follow the procedure in After working inside your computer. VR heat sink Removing VR heatsink Steps 1. Follow the procedure in Before working inside your computer. 2. Remove the: Cover Graphics card Heatsink assembly 3.

  • Page 75: Installing Vr Heatsink

    Figure 12. VR heatsink assembly for systems shipped with 65 W or 80 W CPU Figure 13. VR heatsink assembly for systems shipped with 125 W CPU 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]. Disassembly and reassembly...
  • Page 76 2. Tighten the captive screws that secure the VR heatsink to the system board [2]. Figure 14. VR heatsink assembly for systems shipped with 65 W or 80 W CPU Figure 15. VR heatsink assembly for systems shipped with 125 W CPU 3.

  • Page 77: Front Fan

    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: Cover PSU hinge 3. Unroute the hard drive card cables from over the fan bracket. 4.
  • Page 78 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]. Disassembly and reassembly...

  • Page 79: Installing Front Fan

    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. Disassembly and reassembly...
  • Page 80 5. Connect the front fan cable to the system board. 6. Route the hard drive card cables from over the front fan bracket. Disassembly and reassembly...

  • Page 81: System Fan

    System fan Removing system fan Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: Cover PSU hinge 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.

  • Page 82: Installing System Fan

    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.
  • Page 83 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.

  • Page 84: Optional Io Card

    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.
  • Page 85 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.

  • Page 86: Processor

    Processor Removing the processor Steps 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: Cover PSU hinge 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.

  • Page 87: Intrusion Switch

    4. Install the: Heatsink assembly PSU hinge 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 hinge.

  • Page 88: Installing Intrusion Switch

    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]. Disassembly and reassembly...

  • Page 89: System Board

    4. Close the 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: Cover PSU hinge Memory module Graphics card WLAN module and SMA antenna...
  • Page 90 • 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. Disassembly and reassembly...

  • Page 91: Installing The System Board

    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].
  • Page 92 2. Replace the 8 #6-32x1/4'' screws that secure the system board to the chassis. 3. Route and connect the following cables: • IO audio cable [1] • Speaker cable [2] Disassembly and reassembly...
  • Page 93 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. Route and connect the following cables: • System board power connector cable [1] Disassembly and reassembly...
  • Page 94 • CPU power cable [2] • System fan cable, intrusion cable, and IO panel cable [3] 6. Install the: 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 95W heat sink assembly) Graphics card...

  • Page 95: System Board Layout

    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.
  • Page 96 28. M.2 2230 PCIe x1 slot, keyed E for WiFi and Bluetooth card Disassembly and reassembly...

  • Page 97: 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.

  • Page 98: Diagnostic Error Messages

    One or more memory modules may be faulty or improperly seated. Reinstall the memory modules or, if necessary, replace them. DISK C: FAILED INITIALIZATION The hard drive failed initialization. Run the hard drive tests in Dell Diagnostics. DRIVE NOT READY The operation requires a hard drive in the bay before it can continue.
  • Page 99 Shut down the computer, remove the hard drive, and boot the computer from an optical drive. Then, shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive. Run the Hard Disk Drive tests in Dell Diagnostics. HARD-DISK DRIVE FAILURE The hard drive does not respond to commands from the computer.
  • Page 100 The operating system cannot find a specific track on the hard drive. SHUTDOWN FAILURE A chip on the system board may be malfunctioning. Run the System Set tests in Dell Diagnostics. If the message reappears, Contact Dell. TIME-OF-DAY CLOCK LOST POWER System configuration settings are corrupted. Connect your computer to an electrical outlet to charge the battery.

  • Page 101: System Error Messages

    You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures.

  • Page 102: Flashing Bios (Usb Key)

    4. Connect the bootable USB drive to the computer that needs the BIOS update. 5. Restart the computer and press F12 when the Dell logo is displayed on the screen. 6. Boot to the USB drive from the One Time Boot Menu.

  • Page 103: Getting Help And Contacting Dell

    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.
  • Page 104 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.

  • Page 105: A Cable Cover

    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.
  • Page 106 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].
  • Page 107 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.
  • Page 108 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.
  • Page 109 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...
  • Page 110 Cable cover...

  • Page 111: B Dust Filter

    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...
  • Page 112 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.

Table of Contents