1170 System board, fan, and base cover assembly

Important notices for handling the system board:

When handling the system board, bear the following in mind.

vThe system board has an accelerometer, which can be broken by applying several thousands of G-forces.

Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6,000 G’s of shock.

vBe careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.

vIf a system board is dropped, you must test it, using PC-Doctor for DOS, to make sure that the HDD Active Protection still functions (see below).

Note: If the test shows that HDD Active Protection is not functioning, be sure to document the drop in any reject report, and replace the system board.

vAvoid rough handling of any kind.

vAt every point in the process, be sure not to drop or stack the system board.

vIf you put a system board down, be sure to put it only on a padded surface such as an ESD mat or conductive corrugated material.

After replacing the system board, run PC-Doctor for DOS to make sure that HDD Active Protection 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, remove these FRUs, in order:

v“1010 Battery pack” on page 61

v“1020 Optical drive or second battery or travel cover” on page 62

v“1050 PCI Express Mini Card for wireless LAN” on page 67

v“1060 Wireless USB adapter or Intel Turbo Memory” on page 70

v“1070 Keyboard” on page 73

v“1090 PCI Express Mini Card for wireless WAN” on page 78

v“1100 Palm rest or palm rest with fingerprint reader” on page 80

v“1120 Keyboard bezel” on page 83

v“1150 LCD assembly” on page 89

94ThinkPad X301 Hardware Maintenance Manual

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Lenovo 27763PU, 27763DU manual System board, fan, and base cover assembly, Important notices for handling the system board
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27763CU, 27763DU, 27763PU specifications

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