Page 58 For Detailed Instructions; Then Remove These Frus In Order - Lenovo ThinkPad X1 Hardware Maintenance Manual

Note: If the test shows that Active Protection System is not functioning, be sure to document the drop in
any reject report, and replace the system board.
• Avoid rough handling of any kind.
• At every point in the process, be sure not to drop or stack the system board.
• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a
corrugated conductive surface.
If the system supports PC-Doctor for DOS, after replacing the system board, run PC-Doctor for DOS to
make sure that hard disk drive Active Protection System still functions. The procedure is as follows:
1. Place the computer on a horizontal surface.
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, disable the battery pack first. Refer to "1000 Disabling the battery pack in the UEFI BIOS" on

page 58 for detailed instructions.

Then remove these FRUs in order:

• "1010 Hard disk drive and solid state drive" on page 59
• "1020 Keyboard" on page 61
• "1030 DIMM" on page 64
• "1040 Backup battery" on page 65
• "1050 PCI Express Mini Card for wireless LAN/WiMAX" on page 65
• "1060 PCI Express Mini Card for wireless WAN" on page 67
• "1090 Keyboard bezel assembly with fingerprint reader and audio sub card " on page 71
• "1100 Battery pack" on page 73
• "1110 RJ45 sub card" on page 74
• "1120 Fan assembly" on page 75
• "1130 I/O board" on page 77
• "1140 Speaker assembly" on page 78
• "1150 Bluetooth daughter card and bluetooth sub card" on page 79
Removal steps of system board and base cover assembly
The following components soldered on 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
Platform Controller Hub (PCH)
c
CPU
.
Chapter 8 Removing and replacing a FRU
81