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Table 26. Removal steps of system board, fan assembly, and 34-mm ExpressCard slot frame
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 ICH (I/O Controller Hub)
b CPU
c GMCH (Graphics Memory Controller Hub)
d Accelerometer chip for the HDD Active Protection System
™
a
d
c
b
118 ThinkPad T400s Hardware Maintenance Manual