Lenovo ThinkPad T400 6474 Hardware Maintenance Manual page 139

Table 28. Removal steps of system board and PC Card/Express Card slots (or
ExpressCard/Smart Card slots or ExpressCard/7-in-1 Media Card Reader slots) assembly
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
CPU
b
Video chip
c
MCH (Memory Controller Hub)
d
ICH (I/O Controller Hub)
e
Accelerometer chip for the HDD Active Protection System
Step Screw (quantity)
M2 × 2.7 mm, flat-head, nylon-coated (2)
1
b
a
c
d
e
1
1
Removing and replacing a FRU
™
Color Torque
Black 0.167 Nm
(1.7 kgfcm)
131