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IMM Lower Heatsink
“Battery” on page 61
“Hard Disk Drive” on page 62
“Combo Bay” on page 63
“Keyboard” on page 70
“LED Board” on page 72
“Upper Heatsink” on page 73
“CPU Board” on page 76
“LCD Panel” on page 77
“Upper Cover” on page 79
To remove the IMM lower heatsink:
1. Disconnect the fan cable from the connector.
2. Remove the screw securing the IMM lower heatsink.
Lift the IMM lower heatsink up to remove.
1
2
Step
Size (Quan-
tity)
Head &
Color Torque
2 M2 x 10L (1) Pan head,
silver
1.6 kgf-cm
Note: Make sure you use the correct screw for replacement.
ThinkPad 390X / i 1700 HMM 81