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 SystemTM

b Security chip

c CPU

d Video chip

e MCH (Memory Controller Hub)

f ICH (I/O Controller Hub)

a
b
cd
ef
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