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Following components soldered on the top side of the system board are extremely
sensitive. When you service the system board, avoid any kind of rough handling.
a Accelerometer chip for the HDD Active Protection System
TM
b Security chip
c CPU
d Video chip
e MCH (Memory Controller Hub)
f ICH (I/O Controller Hub)
a
b
c
d
e
f
Table 27. Removal steps system board, PC Card/ExpressCard (or PC Card/Smart Card) slots
assembly
1
1
Step Screw (quantity) Color Torque
1 M2 × 2.7 mm, flat-head, nylon-coated (2) Black 0.167 Nm
(1.7
kgfcm)
102 ThinkPad R61, R61e, and R61i (15.4-inch widescreen) Hardware Maintenance Manual