Seagate ST94019A Technické informace stáhnout pdf (Strana 79)

Chapter 4 71

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 59):

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 Printer, mouse, and other external devices

T Battery pack

T Hard disk drive

T DIMM

T 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 System board

T LCD assembly

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Seagate ST94019A Technické informace Strana 79