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Dell ChengMing 3980 Service Manual

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ChengMing 3980
Service Manual
Regulatory Model: D19M
Regulatory Type: D19M005

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Summary of Contents for Dell ChengMing 3980

  • Page 1 ChengMing 3980 Service Manual Regulatory Model: D19M Regulatory Type: D19M005...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2018 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: 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 4: After Working Inside Your Computer

    Turn off your computer. 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. Disconnect your computer and all attached devices from the electrical outlets. Press and hold the power button while the computer is unplugged to ground the system board.

  • Page 5: 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 6 • An additional physical bus that is added in parallel with the existing USB 2.0 bus (refer to the picture below). • USB 2.0 previously had four wires (power, ground, and a pair for differential data); USB 3.0/USB 3.1 Gen 1 adds four more for two pairs of differential signals (receive and transmit) for a combined total of eight connections in the connectors and cabling.

  • Page 7: Hdmi 1.4 Features

    the new protocol, the connector itself remains the same rectangular shape with the four USB 2.0 contacts in the exact same location as before. Five new connections to carry receive and transmitted data independently are present on USB 3.0/USB 3.1 Gen 1 cables and only come into contact when connected to a proper SuperSpeed USB connection.

  • Page 8: Screw Size List

    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 9: System Board Layout

    System board layout The following image displays the system board layout of the computer. Power switch connector Internal Speaker Connector(INT_SPKR) SATA 2 Connector(white color) Coin-cell battery Connector SATA 3 Connector(black color) SATA 0 Connector(Blue color) HDD_ODD_PowerCable Connector(SATA_PWR) Internal USB connector(WF_BT_USB) ATX Power Connector(ATX_SYS) Service Mode / Password clear / CMOS clear Jumper M.2 PCIe/SATA 1 Connector...

  • Page 10: Removing The Cover

    Cover Removing the cover Follow the procedure in Before working inside your computer. To remove the cover: 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]. Lift the cover from the system [3].

  • Page 11: Installing The Cover

    Installing the cover Place the cover on the computer. Removing and installing components...
  • Page 12 Slide the computer cover towards the front of the chassis until it is fully engaged [1]. Replace the two 6-32xL6.35 screws to secure the computer cover [2]. Removing and installing components...

  • Page 13: Removing The Front Bezel

    Follow the procedure in After working inside your computer. Front Bezel Removing the front bezel Follow the procedure in Before working inside your computer. Remove the cover. To remove the front bezel: 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 14 Lift the chassis and remove the front bezel from the computer. Removing and installing components...

  • Page 15: Installing The Front Bezel

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

  • Page 16: Removing The 3.5 Inch Hard Drive

    Install the cover. Follow the procedure in After working inside your computer. Hard drive Removing the 3.5 inch hard drive Follow the procedure in Before working inside your computer. Remove the: cover front bezel To remove the 3.5 inch hard drive: Disconnect the hard drive data cable and power cable from the hard drive [1].
  • Page 17 b Remove the four screws (6-32xL3.6) that secure the hard drive to the computer. Removing and installing components...
  • Page 18 Slide and lift the hard drive away from the computer. Removing and installing components...
  • Page 19 Installing the 3.5 inch hard drive Insert the 3.5 inch hard drive into the slot on the computer. Removing and installing components...
  • Page 20 Tighten the four screws(6-32xL3.6) to secure the hard drive to the computer. Removing and installing components...
  • Page 21 Connect the hard drive data cable and power cable to the hard drive. Removing and installing components...

  • Page 22: Removing The 2.5 Inch Hard Drive

    Install the: front bezel cover Follow the procedure in After working inside your computer. Removing the 2.5 inch hard drive Follow the procedure in Before working inside your computer. Remove the: cover front bezel To remove the 2.5 inch hard drive: Disconnect the hard drive data cable and power cable from the hard drive.
  • Page 23 b Remove the two screws (M3L3.5) that secure the hard drive to the computer. Removing and installing components...
  • Page 24 Slide and lift the hard drive away from the computer. Removing and installing components...

  • Page 25: Installing The 2.5 Inch Hard Drive

    Installing the 2.5 inch hard drive Insert the 2.5 inch hard drive into the slot on the computer. Removing and installing components...
  • Page 26 Tighten the two screws (M3L3.5) to secure the hard drive to the computer. Removing and installing components...
  • Page 27 Connect the hard drive data cable and power cable to the hard drive. Removing and installing components...

  • Page 28: Removing The Optical Drive

    Install the: front bezel cover Follow the procedure in After working inside your computer. Optical drive Removing the optical drive Follow the procedure in Before working inside your computer. Remove the: cover To remove the optical drive: Disconnect the optical drive data and the power cable from the optical drive [1]. b Remove the two screws (M2 x 2) that secure the optical drive to the computer [2].
  • Page 29 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 30: Installing The Optical Drive

    Installing the optical drive Insert the optical drive into the slot on the computer. Removing and installing components...
  • Page 31 Tighten the two screws (M2 x 2) to secure the optical drive o the computer [1]. Connect the optical drive data cable and power cable to the optical drive [2]. Removing and installing components...
  • Page 32 Install the: cover Follow the procedure in After working inside your computer. M.2 SSD card Removing the M.2 SSD card Follow the procedure in Before working inside your computer. Remove the cover. To remove the M.2 PCIe SSD: Remove the screw (M2 x 3.5) that secures the M.2 SSD card to the system board [1]. b Slide and lift the SSD from the system [2].
  • Page 33 Installing the M.2 SSD card Slide the M.2 SSD card into the connector on the system board [1]. Replace the screw (M2 x 3.5) to secure the M.2 SSD card to the system board [2]. Removing and installing components...

  • Page 34: Removing The Cooling Shroud

    Install the cover. Follow the procedure in After working inside your computer. Cooling shroud Removing the cooling shroud Follow the procedure in Before working inside your computer. Remove the: cover To remove the cooling shroud: Hold the touch points and pry the edges [1, 2]. Removing and installing components...
  • Page 35 b Lift the cooling shroud away from the computer [3]. Removing and installing components...

  • Page 36: Installing The Cooling Shroud

    Installing the cooling shroud 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 37: Removing The Power Supply Unit

    Install the: cover Follow the procedure in After working inside your computer. Power supply unit Removing the power supply unit Follow the procedure in Before working inside your computer. Remove the: cover cooling shroud To disconnect the cables: Press the tab of the 4-pin power cables and disconnect it from the system board. Removing and installing components...
  • Page 38 b Release the cables from the metal and plastic clips [1,2,3] . Removing and installing components...
  • Page 39 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 40 Slide and lift the PSU from the computer. Removing and installing components...

  • Page 41: Installing The Power Supply Unit

    Installing the power supply unit Place the power supply unit in the chassis and slide towards the back of the system to secure it. Removing and installing components...
  • Page 42 Replace the four screws (6-32xL6.35) at the back of the computer to secure power supply [1]. Route the power cables through the chassis clips [2]. Connect the 8-pin power cable to the system board [3]. Removing and installing components...
  • Page 43 Secure the cables with the metal and plastic clips [1,2,3]. Removing and installing components...
  • Page 44 Connect the 4-pin power cable to the system board. Removing and installing components...

  • Page 45: Removing The Speaker

    Install the: cooling shroud cover Follow the procedure in After working inside your computer. Speaker Removing the speaker Follow the procedure in Before working inside your computer. Remove the: cover front bezel To remove the speaker: Disconnect the speaker cable from system board [1]. b Press the securing tab on the speaker and remove the speaker from the chassis [2, 3].

  • Page 46: Installing The Speaker

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

  • Page 47: Removing The Heat Sink Assembly

    Install the: front bezel cover Follow the procedure in After working inside your computer. Heat sink assembly Removing the heat sink assembly Follow the procedure in Before working inside your computer. Remove the: cover cooling shroud To remove the heat sink assembly: Disconnect the fan cable from the connector on the system board.
  • Page 48 b Loosen the M3 screws in a sequential order [1,2,3,4]. Lift the heat sink assembly away from the computer . Removing and installing components...

  • Page 49: Installing The Heat Sink Assembly

    Installing the heat sink assembly Align the heat sink assembly with screw holders and place the heat sink assembly on the system board. 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 50 Connect the fan cable to the connector on the system board. Removing and installing components...

  • Page 51: Removing The Memory Module

    Install the: cooling shroud cover Follow the procedure in After working inside your computer. Memory modules Removing the memory module Follow the procedure in Before working inside your computer. Remove the cover. To remove the memory module: Pull the clips securing the memory module until the memory module pops up [1]. b Lift the memory module from the system board [2].

  • Page 52: Installing The Memory Module

    Installing the memory module 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 53: Removing The Expansion Card

    Install the cover. Follow the procedure in After working inside your computer. Expansion card Removing the expansion card Follow the procedure in Before working inside your computer. Remove the cover. To remove the expansion card: Remove the screw (6-32xL6.35) that secures the PCI bracket to the computer [1]. b Pull the PCI bracket downward [2].
  • Page 54 Push the release tab [1] and lift the expansion card from the system board [2]. Removing and installing components...

  • Page 55: Installing The Expansion Card

    Installing the expansion card Insert the expansion card in the connector on the system board and press down until it is secured. Removing and installing components...
  • Page 56 Push the PCI bracket back to its position [1]. Replace the screw (6-32xL6.35) that secures the PCI bracket to the computer [2]. Removing and installing components...
  • Page 57 Install the cover. Follow the procedure in After working inside your computer. Installing PCIe expansion card in slots 3 and 4 - optional Remove the screw (6-32xL6.35) that secures the PCI bracket to the computer [1]. Pull the metal card-retension latch downward [2]. To remove the PCIe brackets as shown below, insert a flathead screwdriver in the hole of PCIe bracket, and repeatedly spin screwdriver from 0-45 degrees to release the bracket [3], and then lift the bracket out from your computer.
  • Page 58 Insert the PCIe expansion card to the connector on the system board. Removing and installing components...

  • Page 59: Removing The Wlan Module

    Repeat the steps to install any additional PCIe expansion card. Push the PCI bracket back to its position. Replace the screw (6-32xL6.35) that secures the PCI bracket to the computer. Install the: cover Follow the procedure in After working inside your computer.
  • Page 60 d Lift the WLAN module from the system board. Removing and installing components...

  • Page 61: Installing The Wlan Module

    Installing the WLAN module Insert the WLAN module in the connector on the system board and press until it is secured. Removing and installing components...
  • Page 62 Push the metal card-retention latch back to its position [1] Tighten the screw (6-32xL6.35) that secures the metal card-retention latch to the computer [2]. Connect the WLAN module cable to the connector on the system board [3]. Removing and installing components...

  • Page 63: Removing The Coin-Cell Battery

    Install the cover. Follow the procedure in After working inside your computer. Coin cell battery Removing the coin cell battery Follow the procedure in Before working inside your computer. Remove the cover. To remove the coin cell battery: 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]. b Lift the coin-cell battery out of the computer [2].

  • Page 64: Installing The Coin-Cell Battery

    Installing the coin cell battery 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 65: Removing The Processor

    Install the cover. Follow the procedure in After working inside your computer. Processor Removing the processor Follow the procedure in Before working inside your computer. Remove the: cover cooling shroud heat sink assembly To remove the processor: Press the release lever down and then move it outward to release it from the retention hook [1,2]. CAUTION: The processor socket pins are fragile and can be permanently damaged.

  • Page 66: Installing The Processor

    b Lift the processor cover and remove the processor from the socket. Place it in an antistatic bag [3]. Installing the processor 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.

  • Page 67: Removing The System Board

    Install the: heat sink assembly cooling shroud cover Follow the procedure in After working inside your computer. System board Removing the system board Follow the procedure in Before working inside your computer. Remove the: cover front bezel M.2 SSD card cooling shroud heat sink assembly Removing and installing components...
  • Page 68 memory module expansion card coin cell battery processor To remove I/O panel cover: 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]. Slide the I/O panel cover [3].
  • Page 69 To remove the system board: 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 70 Tilt the system board. Removing and installing components...
  • Page 71 d Lift the system board from the system. Removing and installing components...

  • Page 72: Installing The System Board

    Installing the system board 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 73 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 74 Connect the optical drive cable, speaker cable, and hard drive data cable and power cable [1,2,3]. 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 75 Place the front IO bracket. Replace the screw (6-32xL6.35) that secures the front IO bracket to the computer [2]. Connect the PSU cable to the connector on the sytem board [3] Removing and installing components...
  • Page 76 Install the: processor coin cell battery memory module expansion card heat sink assembly cooling shroud M.2 SATA SSD front bezel cover Follow the procedure in After working inside your computer. Removing and installing components...

  • Page 77: Troubleshooting

    2 Amber, 3 Amber Motherboard, memory or CPU failure 2 Amber, 4 Amber CMOS battery failure 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 78 NOTICE - Hard Drive SELF MONITORING SYSTEM has S.M.A.R.T error, possible hard disk drive failure. reported that a parameter has exceeded its normal operating range. Dell recommends that you back up your data regularly. A parameter out of range may or may not indicate a...

  • Page 79: 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: Go to Dell.com/support.

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