IBM THINKPAD T400S Hardware Maintenance Manual page 110

2. Run Diagnostics ® ThinkPad Devices ® HDD Active Protection Test.
Attention: Do not apply physical shock to the computer while the test is running.
For access, remove these FRUs, in order:
• "1010 Battery pack" on page 75
• "1020 Serial Ultrabay Slim device or travel bezel" on page 75
• "1030 Solid state drive (SSD) or hard disk drive (HDD)" on page 76
• "1050 PCI Express Mini Card for wireless LAN" on page 80
• "1060 PCI Express Mini Card for wireless WAN" on page 83
• "1070 Keyboard" on page 85
• "1090 Wireless USB adapter or Intel Turbo Memory" on page 90
• "1100 Palm rest or palm rest with fingerprint reader" on page 91
• "1110 Bluetooth daughter card (BDC-2)" on page 93
• "1120 Keyboard bezel and speaker assembly" on page 94
• "1130 5-in-1 Media Card Reader adapter" on page 98
• "1140 Bluetooth–wireless radio switch FPC" on page 98
• "1150 LCD unit" on page 100
Table 25. 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.
For ThinkPad T400s:
a
: ICH (I/O Controller Hub)
b
: CPU
c
: GMCH (Graphics Memory Controller Hub)
d
: Accelerometer chip for the HDD Active Protection System™
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Hardware Maintenance Manual