Troubleshooting; Preliminary Steps - Compaq 12XL125 - Presario - K6-2 533 MHz Maintenance & Service Manual

Troubleshooting

This section provides troubleshooting information for Compaq Presario 1200XL Series
Portable Notebook. The basic steps in troubleshooting are:

1. Preliminary Steps

2. The Power-On Self-Test (POST)
3. The recommended actions you can take, described in the diagnostic tables later in this
section, if you are unable to run POST, or if POST displays an error message.
When following the recommended actions for on
Codes, perform the steps in the order listed above. Rerun POST after each recommended
action until the problem is solved, and if no error message occurs. Once the problem is
solved, do not continue with any remaining recommended actions.
Note: If the problem is intermittent, check your Notebook several times to ensure that
the problem is solved.
Preliminary Steps
Before running Power-On Self-Test
1. If a Power-on password is established, type it and press the Enter key. If you do not
know the password, clear the password (See
2. Run Compaq Diagnostics.
3. Turn off the Notebook and its external devices.
4. Disconnect any external devices you do not want to test. Do not disconnect the printer
if you want to test it or use it to log error messages.
Important: If the problem only occurs when an external device is connected to the
computer, the problem may be related to the external device or its cable. Verify this by
running POST both with and without the external device connected.
5. Install loopback plugs in the serial and parallel connectors if you want to test these
ports.
6. Ensure that the hard drive is installed in the Notebook.
P N M
RESARIO OTEBOOK AINTENANCE AND
Presario 1200XL Series
Model XL300, XL300A, and XL300B
(POST), complete the following steps:
S G 1200XL S
ERVICE UIDE ERIES
Power-On Self-Test and
Clearing the Power-On
Diagnostic Error
Password).
T 1
ROUBLESHOOTING