Undetermined Problems. Acer 1680

Undetermined Problems

The diagnostic problems does 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 non-defective FRU).

NOTE: Verify that all attached devices are supported by the computer.

NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power

System Check” on page 70):

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:

T

Non-Acer devices

T

T

T

T

Printer, mouse, and other external devices

Battery pack

Hard disk drive

DIMM

T

T

CD-ROM/Diskette drive Module

PC Cards

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 FRU one at a time. Do not replace a non-defective FRU:

T

T

System board

LCD assembly

Chapter 4 82