Power button board
Description Spare part number
Power button board L28466-001
Before removing the power button board, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the any smart cards and memory cards.
5. Remove the bottom cover (see Service door on page 41).
6. Remove the battery (see Battery on page 43).
7. Remove the memory modules (see Memory modules on page 51).
8. Remove the ODD (see ODD on page 48).
9. Remove the SSDs (see Solid-state drive (SSD) on page 46).
10. Remove the middle cover (see Middle cover on page 61).
11. Remove the fans (see Fans on page 70).
12. Remove the system board (see System board on page 72).
Remove the power button board:
1. Lift the thermal tape (1) covering the board.
2. Remove the 2 Phillips M2.5×5.0 screws (2) that secure the power button board.
Component replacement procedures 81
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