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Intermittent problems, Undetermined problems, Intermittent problems undetermined problems – Acer 510 User Manual

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Troubleshooting

Note:

If you cannot find a symptom or an error in this list and the
problem remains.

Intermittent Problems

Intermittent system hang problems can be caused by a variety of reasons
that have nothing to do with a hardware defect, such as: cosmic radiation,
electrostatic discharge, or software errors. FRU replacement should be
considered only when a recurring problem exists.

When analyzing an intermittent problem, do the following:

1. Run the advanced diagnostic test for the system board in loop mode at

least 10 times.

2. If no error is detected, do not replace any FRU.

3. If any error is detected, replace the FRU. Rerun the test to verify that

there are no more errors.

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 a 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.

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:

Non-Acer devices

Devices attached to the port replicator

Modem-Related Symptoms

Symptom / Error

Action in Sequence

Internal modem does not
work correctly.

System Diagnostics Diskette

Modem phone jack

Modem board

System board