System Test Procedures; Testing The Optical Drive; Testing The Keyboard Or Auxiliary Input Device - Packard Bell EasyNote NM85 Service Manual

System test procedures

Testing the optical drive

Use the following procedure to isolate a problem in an optical drive controller,
driver, or drive.
label can cause damage to the drive or can cause the drive to fail.

Testing the keyboard or auxiliary input device

If the internal keyboard does not work or an unexpected character appears, make
sure that the flexible cable extending from the keyboard is correctly seated in the
connector on the system board. If the keyboard cable is connected correctly, run
the Keyboard Test.
If the tests detect a keyboard problem, do the following one at a time.
The following auxiliary input devices are supported by this notebook:
If any of these devices do not work, reconnect the cable connector and repeat
the failing operation.
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Important
Make sure that the CD-ROM does not have any label attached to it. The
To test the optical drive:
1
Boot from the diagnostics diskette and start the diagnostics program.
2
Run the CD-ROM Test and see if the test completes successfully.
3
Follow the instructions in the message window.
If an error occurs, reconnect the connector on the system board.
If the error still remains:
4
Reconnect the external optical drive to a USB jack.
5
Replace the external optical drive.
6
Replace the system board.
Important
Disconnect any external keyboards before testing the built-in keyboard.
To correct the problem:
1
Reconnect the keyboard cable to the system board.
2
Replace the keyboard.
3
Replace the system board.
Important
Do not replace a non-defective FRU.
•
Numeric keypad
•
External keyboard
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