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Compaq Presario Series Maintenance and Service Guide
United States December 9, 2002
Presario 305 Model
Before You Begin Specifications Parts Catalog
Removal Sequence Troubleshooting Battery Operations
Product Description Pin Assignments
Index
Preliminary Steps
IMPORTANT:
Use AC power when running POST, Computer
Setup, or Computer Checkup. A low battery
condition could initiate Hibernation and interrupt
the test.
Before running POST, complete the following steps:
1. If a power-on password has been established, type the password and press Enter. If the
password is not known,
clear the password.
2. Ensure the hard drive is installed in the computer.
3. Ensure that the battery pack is installed in the computer and the power cord is connected to
the computer and plugged into an external AC power source.
4. Turn on the computer.
5. Run
Computer Setup.
6. Turn off the computer and its external devices.
7. Disconnect any external devices that you do not want to test. If you want to use the printer to
log error messages, leave it connected to the computer.
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 with and without the
external device connected.
8. Use Compaq Utilities and loopback plugs in the serial and parallel connectors if you plan to test
these ports.
When the preliminary steps are completed, you are ready to run
POST.
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