Compaq Presario 1900 Presario 1900 Series Maintenance and Service Guide - Page 83

Troubleshooting

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Maintenance & Service Guide Presario 1900 Series Models: 1900T, 1905, 1906, 1910, 1915, 1919, 1920, 1922, 1925, 1926, 1927, 1928, 1929, and 1930 Before You Begin Removal Sequence Product Description Specifications Troubleshooting Pin Assignments Parts Catalog Battery Operations Index Troubleshooting Preliminary Steps Before running POST, complete the following preliminary steps: 1. If a power-on password has been established, type the password and press the Enter key. If the password is not known, clear the password. 2. Run Compaq diagnostics. 3. Turn off the computer and its external devices. 4. Disconnect any external devices that you do not want to test. Do not disconnect the printer if you want to test it or use it to log error messages. If the problem only occurs when an external device is connected to the computer, the problem may be related to IMPORTANT: the external device or its cable. Verify this by running POST with and without the external device connected. 5. Install loopback plugs in the serial and parallel connectors if you would like to test these ports. 6. Ensure the hard drive is installed in the computer. 7. Ensure that the battery pack is inserted in the computer and the computer is connected to an external AC power source. When the preliminary steps are completed, you are ready to run POST.

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Maintenance & Service Guide
Presario 1900 Series
Models: 1900T, 1905, 1906, 1910, 1915, 1919, 1920,
1922, 1925, 1926, 1927, 1928, 1929, and 1930
Before You Begin
Specifications
Parts Catalog
Removal Sequence
Troubleshooting
Battery Operations
Product Description
Pin Assignments
Index
Troubleshooting
Preliminary Steps
Before running
POST,
complete the following preliminary steps:
1.
If a power-on password has been established, type the password and press the
Enter
key.
If the password is not known,
clear the password.
2.
Run
Compaq diagnostics
.
3.
Turn off the computer and its external devices.
4.
Disconnect any external devices that 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
with and without the external device connected.
5.
Install loopback plugs in the serial and parallel connectors if you would like to test
these ports.
6.
Ensure the hard drive is installed in the computer.
7.
Ensure that the battery pack is inserted in the computer and the computer is
connected to an external AC power source.
When the preliminary steps are completed, you are ready to run
POST.