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Disassemble the system board for recycle

Follow the instructions in this section to disassemble the system board before recycling.

About this task

Before disassembling the system board:
  1. Remove the processor air baffle. See Remove the processor air baffle.
  2. If applicable, remove the PCIe riser assembly(ies). See Remove a PCIe riser assembly.
  3. If applicable, remove the rear drive cage. See Remove the rear drive cage.
  4. If applicable, remove the DPU air baffle. See Remove the DPU air baffle.
  5. If applicable, remove the leakage sensor module bracket. See Remove the leakage sensor module bracket.
  6. If applicable, remove the system I/O board. See Remove the system I/O board.
  7. Remove the processor and DWCM assembly. See Remove the Lenovo Neptune(TM) Processor Direct Water Cooling Module.
  8. Remove all the memory modules. See Remove a memory module.
  9. Remove the CMOS battery (CR2032). See Remove the CMOS battery (CR2032).
  10. Refer to local environmental, waste or disposal regulations to ensure compliance.

Procedure

  1. Remove the two cable guides.
    1. Unfasten the two screws that secure the cable guide to the chassis; then, lift the cable guide out of the slot.
      Figure 1. Cable guide removal
      Cable guide removal
    2. Repeat to remove the other cable guide.
  2. Disengage the system board.
    1. Loosen the (1) thumbscrew to release the system board.
    2. Slide the system board towards the front of the CPU complex as illustrated to disengage it from the chassis.
      Figure 2. System board disengagement
      System board engagement
      1 Thumbscrew
  3. Remove the system board from the chassis.
    Figure 3. System board removal
    System board removal
  4. Separate the system board from the supporting sheet metal.
    1. Carefully turn the system board assembly upside down.
      Figure 4. Turning the system board assembly upside down
      Turning the system board assembly upside down
    2. Unfasten the two screws from the bottom of the supporting sheet metal to remove the power connectors.
      Figure 5. Screw removal
      Screw removal
    3. Carefully turn the system board assembly right-side up.
      Figure 6. Turning the system board assembly right-side up
      Turning the system board assembly right-side up
    4. Remove the thumbscrew and ten screws from the system board assembly as illustrated:
      Figure 7. Component removal
      Component removal
    5. Separate the system board assembly from the supporting sheet metal.
      Figure 8. System board assembly disassembly

      System board assembly disassembly

After you finish

After disassembling the system board assembly, recycle the unit in compliance with local regulations.