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Removing and replacing a FRU
1190 System board, PC Card/ExpressCard slots assembly or
PC Card/Smart Card slots assembly or PC Card/4-in-1 media
reader slot assembly
For access, remove these FRUs, in order:
v "1010 Battery pack" on page 57
v "1020 Ultrabay Slim device or Ultrabay Enhanced device" on page 58
v "1030 Hard disk drive cover, hard disk drive, and hard disk drive rubber rails"
v "1040 Palm rest or palm rest with fingerprint reader" on page 61
v "1060 Keyboard" on page 65
v "1070 Modem daughter card (MDC-1.5)" on page 67
v "1080 PCI Express Mini Card for wireless LAN" on page 69
v "1090 PCI Express Mini Card for wireless WAN" on page 71
v "1120 Keyboard bezel" on page 75
v "1140 Fan assembly" on page 79
v "1100 SIM card slot" on page 73
v "1160 LCD assembly" on page 84
v "1170 Base cover, USB sub card with cable, and PC Card slots bezel assembly"
v "1180 Structure frame" on page 92
96
MT 6480, 6481, 7658, 7659, 7660, 7661, 7662, 7663, 7664, 7665, 7732, 7733, 7734, 7735, 7738, 7742, 7743, 7744, 7751, and 7755
Important notices for handling the system board
When handling the system board, bear the following in mind.
v At every point in the process, be sure not to drop or stack the system
board.
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 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.
v Avoid rough handling of any kind.
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 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 59
on page 87
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