1120 System board and fan 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.
vAvoidrough 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 procedureis 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 68
v“1020 Bottom slot cover” on page 70
v“1030 DIMM” on page 72
v“1040 Hard disk drive (HDD)” on page 73
v“1050 PCI Express Mini Card for wireless LAN” on page 75
v“1060 PCI Express Mini Card for wireless WAN”on page 77
v“1070 Keyboard” on page 79
v“1080 Topcase assembly and microphone module” on page 82
v“1090 Backup battery” on page 86
v“1100 Bluetooth daughter card (BDC-2)” on page 87
v“1110Speaker assembly” on page 88
90 ThinkPad Edge 13″and E30 HardwareMaintenance Manual