Dell ChengMing 3988 Service Manual
  1. Manuals
  2. Brands
  3. Dell Manuals
  4. Desktop
  5. D19M
  6. Service manual
Dell ChengMing 3988 Service Manual

Dell ChengMing 3988 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
ChengMing 3988
Service Manual
Regulatory Model: D19M
Regulatory Type: D19M005

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ChengMing 3988 and is the answer not in the manual?

Questions and answers

Related Manuals for Dell ChengMing 3988

Summary of Contents for Dell ChengMing 3988

  • Page 1 ChengMing 3988 Service Manual Regulatory Model: D19M Regulatory Type: D19M005...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2019 -2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Contents 1 Working on your computer......................5 Safety instructions................................5 Turning off your computer — Windows 10........................5 Before working inside your computer..........................5 After working inside your computer............................6 2 Technology and components......................7 USB features..................................7 HDMI 1.4....................................9 3 Removing and installing components....................
  • Page 4 Installing the processor..............................67 System board..................................68 Removing the system board............................68 Installing the system board............................73 4 Troubleshooting......................... 78 Diagnostics................................... 78 Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0...............78 System error messages..............................79 5 Getting help..........................80 Contacting Dell..................................80 Contents...

  • Page 5: 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 6: After Working Inside Your Computer

    3. Turn off your computer. 4. Disconnect all the network cables from the computer. 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.

  • Page 7: Technology And Components

    Technology and components USB features Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral devices like mice, keyboards, external drivers, and printers. Let's take a quick look on the USB evolution referencing to the table below. Table 1.
  • Page 8 With today's ever increasing demands placed on data transfers with high-definition video content, terabyte storage devices, high megapixel count digital cameras etc., USB 2.0 may not be fast enough. Furthermore, no USB 2.0 connection could ever come close to the 480Mbps theoretical maximum throughput, making data transfer at around 320Mbps (40MB/s) —...

  • Page 9: Hdmi 1.4

    HDMI 1.4 This topic explains the HDMI 1.4 and its features along with the advantages. HDMI (High-Definition Multimedia Interface) is an industry-supported, uncompressed, all-digital audio/video interface. HDMI provides an interface between any compatible digital audio/video source, such as a DVD player, or A/V receiver and a compatible digital audio and/or video monitor, such as a digital TV (DTV).

  • Page 10: Removing And Installing Components

    Removing and installing components Recommended tools The procedures in this document require the following tools: • Phillips #0 screwdriver • Phillips #1 screwdriver • Plastic scribe NOTE: The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4 Screw size list Table 2.

  • Page 11: System Board Layout

    System board layout The following image displays the system board layout of the computer. 1. Power switch connector 2. Internal Speaker Connector(INT_SPKR) 3. SATA 2 Connector(white color) 4. Coin-cell battery Connector 5. SATA 3 Connector(black color) 6. SATA 0 Connector(Blue color) 7.

  • Page 12: Cover

    18. CPU Fan Connector(FAN_CPU) 19. Memory Connectors(DIMM1/DIMM2) Cover Removing the cover 1. Follow the procedure in Before working inside your computer. 2. To remove the cover: a) Remove the two 6-32xL6.35 screws that secure the cover to the computer [1]. b) Slide the cover towards the back of your system [2].

  • Page 13: Installing The Cover

    Installing the cover 1. Place the cover on the computer. Removing and installing components...
  • Page 14 2. Slide the computer cover towards the front of the chassis until it is fully engaged [1]. 3. Replace the two 6-32xL6.35 screws to secure the computer cover [2]. Removing and installing components...

  • Page 15: Front Bezel

    4. 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 cover. 3. To remove the front bezel: a) Pry the front bezel retention clips away from the chassis. [1]. b) Rotate the bezel away from the computer to release the hooks on the opposite edge of the bezel from the chassis [2].
  • Page 16 c) Lift the chassis and remove the front bezel from the computer. Removing and installing components...

  • Page 17: Installing The Front Bezel

    Installing the front bezel 1. Insert the hooks along the bottom edge of the front bezel into the slots on the chassis front [1]. 2. Push the bezel toward the computer to engage the front bezel retention clips until they click into place [2]. Removing and installing components...

  • Page 18: Hard Drive

    3. Install the cover. 4. Follow the procedure in After working inside your computer. Hard drive Removing the 3.5 inch hard drive 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover front bezel 3. To remove the 3.5 inch hard drive: a) Disconnect the hard drive data cable and power cable from the hard drive [1].
  • Page 19 b) Remove the four screws (6-32xL3.6) that secure the hard drive to the computer. Removing and installing components...
  • Page 20 c) Slide and lift the hard drive away from the computer. Removing and installing components...

  • Page 21: Installing The 3.5 Inch Hard Drive

    Installing the 3.5 inch hard drive 1. Insert the 3.5 inch hard drive into the slot on the computer. Removing and installing components...
  • Page 22 2. Tighten the four screws(6-32xL3.6) to secure the hard drive to the computer. Removing and installing components...
  • Page 23 3. Connect the hard drive data cable and power cable to the hard drive. Removing and installing components...

  • Page 24: Removing The 2.5 Inch Hard Drive

    4. Install the: front bezel cover 5. Follow the procedure in After working inside your computer. Removing the 2.5 inch hard drive 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover front bezel 3. To remove the 2.5 inch hard drive: a) Disconnect the hard drive data cable and power cable from the hard drive.
  • Page 25 b) Remove the two screws (M3L3.5) that secure the hard drive to the computer. Removing and installing components...

  • Page 26: Installing The 2.5 Inch Hard Drive

    c) Slide and lift the hard drive away from the computer. Installing the 2.5 inch hard drive 1. Insert the 2.5 inch hard drive into the slot on the computer. Removing and installing components...
  • Page 27 2. Tighten the two screws (M3L3.5) to secure the hard drive to the computer. Removing and installing components...
  • Page 28 3. Connect the hard drive data cable and power cable to the hard drive. Removing and installing components...

  • Page 29: Optical Drive

    4. Install the: front bezel cover 5. Follow the procedure in After working inside your computer. Optical drive Removing the optical drive 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover 3. To remove the optical drive: a) Disconnect the optical drive data and the power cable from the optical drive [1].
  • Page 30 c) Push the optical drive from the inside of the system and pull the optical drive out of the computer [3]. Removing and installing components...

  • Page 31: Installing The Optical Drive

    Installing the optical drive 1. Insert the optical drive into the slot on the computer. Removing and installing components...
  • Page 32 2. Tighten the two screws (M2 x 2) to secure the optical drive o the computer [1]. 3. Connect the optical drive data cable and power cable to the optical drive [2]. Removing and installing components...

  • Page 33: M.2 Ssd Card

    4. Install the: cover 5. Follow the procedure in After working inside your computer. M.2 SSD card Removing the M.2 SSD card 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. To remove the M.2 PCIe SSD: a) Remove the screw (M2 x 3.5) that secures the M.2 SSD card to the system board [1].

  • Page 34: Installing The M.2 Ssd Card

    Installing the M.2 SSD card 1. Slide the M.2 SSD card into the connector on the system board [1]. 2. Replace the screw (M2 x 3.5) to secure the M.2 SSD card to the system board [2]. Removing and installing components...

  • Page 35: Cooling Shroud

    3. Install the cover. 4. Follow the procedure in After working inside your computer. Cooling shroud Removing the cooling shroud 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover 3. To remove the cooling shroud: a) Hold the touch points and pry the edges [1, 2].
  • Page 36 b) Lift the cooling shroud away from the computer [3]. Removing and installing components...

  • Page 37: Installing The Cooling Shroud

    Installing the cooling shroud 1. Align the tabs on the cooling shroud with the securing slots on the computer and lower the cooling shroud into the chassis until it is firmly seated. Removing and installing components...

  • Page 38: Power Supply Unit

    2. Install the: cover 3. Follow the procedure in After working inside your computer. Power supply unit Removing the power supply unit 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover cooling shroud 3. To disconnect the cables: a) Press the tab of the 4-pin power cables and disconnect it from the system board.
  • Page 39 b) Release the cables from the metal and plastic clips [1,2,3] . Removing and installing components...
  • Page 40 c) Unroute the PSU cable from the metal clip [1], press the tab of the 8-pin power cables and disconnect it from the system board [2], and then remove 4 screws (6-32xL6.35) to release the PSU [3]. Removing and installing components...
  • Page 41 4. Slide and lift the PSU from the computer. Removing and installing components...

  • Page 42: Installing The Power Supply Unit

    Installing the power supply unit 1. Place the power supply unit in the chassis and slide towards the back of the system to secure it. Removing and installing components...
  • Page 43 2. Replace the four screws (6-32xL6.35) at the back of the computer to secure power supply [1]. 3. Route the power cables through the chassis clips [2]. 4. Connect the 8-pin power cable to the system board [3]. Removing and installing components...
  • Page 44 5. Secure the cables with the metal and plastic clips [1,2,3]. Removing and installing components...
  • Page 45 6. Connect the 4-pin power cable to the system board. Removing and installing components...

  • Page 46: Speaker

    7. Install the: cooling shroud cover 8. Follow the procedure in After working inside your computer. Speaker Removing the speaker 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover front bezel 3. To remove the speaker: a) Disconnect the speaker cable from system board [1].

  • Page 47: Installing The Speaker

    Installing the speaker 1. Slide the speaker module into the slot [1]. 2. Connect the speaker cable to the system board [1]. Removing and installing components...

  • Page 48: Heat Sink Assembly

    3. Install the: front bezel cover 4. Follow the procedure in After working inside your computer. Heat sink assembly Removing the heat sink assembly 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover cooling shroud 3.
  • Page 49 b) Loosen the M3 screws in a sequential order [1,2,3,4]. c) Lift the heat sink assembly away from the computer . Removing and installing components...

  • Page 50: Installing The Heat Sink Assembly

    Installing the heat sink assembly 1. Align the heat sink assembly with screw holders and place the heat sink assembly on the system board. 2. Tighten the M3 screws in a sequential order to secure the heat sink assembly to the system board [ 1,2,3,4]. Removing and installing components...
  • Page 51 3. Connect the fan cable to the connector on the system board. Removing and installing components...

  • Page 52: Memory Modules

    4. Install the: cooling shroud cover 5. Follow the procedure in After working inside your computer. Memory modules Removing the memory module 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. To remove the memory module: a) Pull the clips securing the memory module until the memory module pops up [1].

  • Page 53: Installing The Memory Module

    Installing the memory module 1. Align the memory module with the connector on the system board [1] and insert the memory module into the memory module socket until the clips secure the memory module [2]. Removing and installing components...

  • Page 54: Expansion Card

    2. Install the cover. 3. Follow the procedure in After working inside your computer. Expansion card Removing the expansion card 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. To remove the expansion card: a) Remove the screw (6-32xL6.35) that secures the PCI bracket to the computer [1].
  • Page 55 c) Push the release tab [1] and lift the expansion card from the system board [2]. Removing and installing components...

  • Page 56: Installing The Expansion Card

    Installing the expansion card 1. Insert the expansion card in the connector on the system board and press down until it is secured. Removing and installing components...
  • Page 57 2. Push the PCI bracket back to its position [1]. 3. Replace the screw (6-32xL6.35) that secures the PCI bracket to the computer [2]. Removing and installing components...

  • Page 58: Installing Pcie Expansion Card In Slots 3 And 4 - Optional

    4. Install the cover. 5. Follow the procedure in After working inside your computer. Installing PCIe expansion card in slots 3 and 4 - optional 1. Remove the screw (6-32xL6.35) that secures the PCI bracket to the computer [1]. 2. Pull the metal card-retension latch downward [2]. 3.
  • Page 59 4. Insert the PCIe expansion card to the connector on the system board. Removing and installing components...

  • Page 60: Wlan Module

    5. Repeat the steps to install any additional PCIe expansion card. 6. Push the PCI bracket back to its position. 7. Replace the screw (6-32xL6.35) that secures the PCI bracket to the computer. 8. Install the: cover 9. Follow the procedure in After working inside your computer.
  • Page 61 d) Lift the WLAN module from the system board. Removing and installing components...

  • Page 62: Installing The Wlan Module

    Installing the WLAN module 1. Insert the WLAN module in the connector on the system board and press until it is secured. Removing and installing components...
  • Page 63 2. Push the metal card-retention latch back to its position [1] 3. Tighten the screw (6-32xL6.35) that secures the metal card-retention latch to the computer [2]. 4. Connect the WLAN module cable to the connector on the system board [3]. Removing and installing components...

  • Page 64: Coin-Cell Battery

    5. Install the cover. 6. Follow the procedure in After working inside your computer. Coin-cell battery Removing the coin cell battery 1. Follow the procedure in Before working inside your computer. 2. Remove the cover. 3. To remove the coin cell battery: a) Press the coin cell battery on the open space of the socket using your finger so that the battery pops up from the socket [1].

  • Page 65: Installing The Coin Cell Battery

    Installing the coin cell battery 1. Place the coin cell battery in its slot on the system board [1] and press until it snaps in place [2].. Removing and installing components...

  • Page 66: Processor

    2. Install the cover. 3. Follow the procedure in After working inside your computer. Processor Removing the processor 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover cooling shroud heat sink assembly 3. To remove the processor: a) Press the release lever down and then move it outward to release it from the retention hook [1,2].

  • Page 67: Installing The Processor

    Installing the processor 1. Insert the processor in the processor socket. Ensure the processor is properly seated [1]. CAUTION: Do not use force to seat the processor. When the processor is positioned correctly, it engages easily into the socket. 2. Lower the processor cover [2]. 3.

  • Page 68: System Board

    4. Install the: heat sink assembly cooling shroud cover 5. Follow the procedure in After working inside your computer. System board Removing the system board 1. Follow the procedure in Before working inside your computer. 2. Remove the: cover front bezel M.2 SSD card cooling shroud heat sink assembly...
  • Page 69 coin cell battery processor 3. To remove I/O panel cover: a) Disconnect the PSU cable from the connector on the sytem board [1] b) Remove the screw (6-32xL6.35) that secures the I/O panel cover to the computer [2]. c) Slide the I/O panel cover [3]. 4.
  • Page 70 5. To remove the system board: a) Remove the eight screws (6-32xL6.35) and one standoff screw (6-32xL4.8) that secure the system board to the computer [1]. b) Push the system board towards the front of the system [2]. Removing and installing components...
  • Page 71 c) Tilt the system board. Removing and installing components...
  • Page 72 d) Lift the system board from the system. Removing and installing components...

  • Page 73: Installing The System Board

    Installing the system board 1. Align the system board to the port connectors on the rear of the chassis and place the system board in the chassis. Removing and installing components...
  • Page 74 2. Replace the eight screws (6-32xL6.35) and one standoff screw (6-32xL4.8) that secure the system board to the chassis. Removing and installing components...
  • Page 75 3. Connect the optical drive cable, speaker cable, and hard drive data cable and power cable [1,2,3]. 4. Route the PSU cable through the metal clip and connect the power supply unit cable to the system board [4,5]. Removing and installing components...
  • Page 76 5. Place the front IO bracket. 6. Replace the screw (6-32xL6.35) that secures the front IO bracket to the computer [2]. 7. Connect the PSU cable to the connector on the sytem board [3] Removing and installing components...
  • Page 77 8. Install the: processor coin cell battery memory module expansion card heat sink assembly cooling shroud M.2 SATA SSD front bezel cover 9. Follow the procedure in After working inside your computer. Removing and installing components...

  • Page 78: Troubleshooting

    Recovery image not found 3, 7 BIOS Recovery image found but invalid 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.

  • Page 79: System Error Messages

    [nnnn]. For help in consecutive times for the same error. resolving this problem, please note this checkpoint and contact Dell Technical Support CMOS checksum error RTC is reset, BIOS Setup default has been loaded. CPU fan failure CPU fan has failed.

  • Page 80: Getting Help

    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.

This manual is also suitable for:

D19m

Table of Contents