IR sensor board
NOTE: Liquid metal thermal grease is available as spare part number L65923-001.
Table 6-10 IR sensor board description and part number
Description Spare part number
IR sensor board L57021-001
Before removing the IR sensor board, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 26).
2. Remove the bottom cover (see Bottom cover on page 27).
3. Remove the battery and speakers (see Battery and speakers on page 32).
4. Remove the solid-state drive (see Solid-state drive and Optane Memory Module on page 29).
5. Remove the heat sink/fan assembly (see Heat sink/fan assembly on page 35).
6. Remove the second display transfer board (see Second display transfer board on page 38).
7. Remove the power connector board and bracket (see Power connector cable on page 39).
8. Remove the system board (see System board on page 41).
Remove the IR sensor board:
1. Remove the two Phillips M2.0 × 2.5 screws (1) that secure the board to the computer.
2. Remove the board and cable from the computer (2).
Reverse this procedure to install the IR sensor board.
46 Chapter 6 Removal and replacement procedures for authorized service provider parts
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