Lenovo THINKPAD E40 Hardware Maintenance Manual page 121

Table 28. Location of major sensitive components on the system board
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
GMCH (Integrated video chip)
b
CPU
c
ICH (I/O Controller Hub)
d
Video chip (only for discrete models)
For ThinkPad Edge 14" and E40 integrated models:
For ThinkPad Edge 14" and E40 discrete models:
a
c
a
d
c
Removing and replacing a FRU
b
b
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