3. If any error is detected, replace the | FRU | shown | by |
the FRU code.. Rerun the test to verify | that | no | more |
errors exist. |
|
|
|
Undetermined Problems
You are here because the diagnostic tests did not identify
which adapter or device failed, which installed devices are
incorrect, whether | a short circuit is suspected, or | whether |
the system is inoperative. Follow these procedures to |
| |
isolate the failing | FRU (do not isolate nondefective | FRUs). |
Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System
Checkout” on page 33).
1.Power off the computer.
2.Visually check them for damage. If any problems are found, replace the FRU.
3. Remove or disconnect all of the following devices:
a.
b.Devices attached to the ThinkPad Port Replicator with Advanced Etherjet Feature
c.Printer, mouse, and other external devices
d.Battery ASM
e. Hard disk drive
f.DIMM
g.
h.PC Cards (PCMCIA)
4.Power on the computer.
5. Determine if the problem has changed.
6. | If the problem does not recur, reconnect the removed | ||||
| devices | one at a time until you | find | the failing FRU. | |
7. | If | the | problem remains, replace | the | following FRUs |
| one | at | a time. Do not replace a | ||
| a. | System board |
|
| |
| b. | LCD | panel ASM |
|
|
| c. | CPU card |
|
| |
