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Power Latch, IR Board, and DC-DC &
BATT Board
“Battery ASM” on page 62
“Hard Disk Drive” on page 63
“Combo Bay” on page 64
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“CPU Board” on page 75
“LCD Panel ASM” on page 76
“Upper Cover ASM” on page 78
“IMM Lower Heatsink ASM” on page 80
“Fan ASM” on page 81
To remove these boards and latch:
1. Remove the power latch and IR board.
2. Remove the screw securing the DC-DC & BATT
board and disconnect the DC-DC & BATT board from
the base cover ASM.
Step
Size (Quan-
tity)
Head &
Color Torque
3 M2.5 x 6L (1) Pan head,
black
3.2 kgf-cm
Note: Make sure you use the correct screw for replacement.
ThinkPad 390E 83