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Table 34. Removal steps of system board and PC Card/ExpressCard slots assembly
1
1
Step Screw (quantity) Color Torque
1 M2 × 3 mm, flat-head, nylon-coated (2) Silver 0.167 Nm
(1.7
kgfcm)
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
™
b Security chip
c CPU
d Video chip
e MCH (Memory Controller Hub)
f ICH (I/O Controller Hub)
Bending
or flexing the system board can cause ball grid array (BGA) connections to
crack (unzip).
a
b
c
d
e
f
ThinkPad T61 and T61p (14.1-inch) 105