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 | FRUs). |
Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System
Checkout” on page 10.)
1.Power off the computer.
2.Visually check for damage. If any problems are found, replace the FRU.
3. Remove or disconnect all of the following devices:
a.
b. Printer, mouse, and other external devices
c.Battery ASM
d. Hard disk drive
e.DIMM
f. 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 |
|
|
|
|
22 ThinkPad 240
