1180 System Board Assembly - Lenovo THINKPAD E40 Hardware Maintenance Manual

1180 System board assembly

For access, remove these FRUs, in order:
v "1010 Battery pack" on page 78
v "1020 ExpressCard blank bezel" on page 79
v "1030 Optical drive or travel cover" on page 80
v "1040 Thermal cover" on page 81
v "1050 Hard disk drive (HDD) assembly" on page 82
v "1060 DIMM" on page 84
v "1070 Fan assembly" on page 85
v "1080 CPU" on page 89
v "1090 Wireless WAN slot cover and PCI Express Mini Card for wireless WAN"
v "1100 Palm rest assembly with cables" on page 93
v "1110 PCI Express Mini Card for wireless LAN" on page 96
v "1120 Backup battery" on page 98
v "1130 Bluetooth daughter card (BDC-2)" on page 99
v "1140 Keyboard" on page 100
v "1150 Keyboard bezel" on page 103
v "1160 LCD unit" on page 106
v "1170 Top shielding assembly" on page 110
112
ThinkPad Edge 14", Edge 15", E40, and E50 Hardware Maintenance Manual
Important notices for handling the system board:
When handling the system board, bear the following in mind.
v The 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.
v Be careful not to drop the system board on a bench top that has a hard
surface, such as metal, wood, or composite.
v If a system board is dropped, you must test it, using PC-Doctor for DOS, to
make sure that the HDD Active Protection System
Note: If the test shows that HDD Active Protection System is not functioning,
be sure to document the drop in any reject report, and replace the system
board.
v Avoid rough handling of any kind.
v At every point in the process, be sure not to drop or stack the system board.
v If 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 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.
on page 90
TM
still functions (see below).