user manual
United States January 2, 2003 
Maintenance & Service Guide
Presario 1600 Series
Models: 1650 and 1655 
 | Home Page | Notice | Preface | Product Description | Troubleshooting 
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications 
Pin Assignments | Battery Pack Operations
Troubleshooting
Preliminary Steps
Clearing the Power-On 
Password
Power-On Self Test 
(POST)
Compaq Diagnostics
Diagnostic Error Codes
Troubleshooting 
Without Diagnostics
Solving Minor 
Problems
Contacting Compaq 
Support 
This section covers troubleshooting information for the 
Compaq Presario 1600 Series Portable Computers. The 
basic steps in troubleshooting include:
1. Follow the 
Preliminary Steps.
2. Run the Power-On Self-Test 
(POST).
3. Follow the recommended 
actions described in the 
diagnostic tables, if you are 
unable to run POST or if POST 
displays an error message.
When following the recommended 
actions in the Sections on POST 
and 
Diagnostic Error Codes 
perform them in the order listed. 
Rerun POST after each 
recommended action until the 
problem is solved and no error 
message occurs. Once the 
problem is solved, do not 
complete the remaining 
recommended actions.
NOTE:
If the problem is 
intermittent, check the 
computer several times to 
verify that the problem is 
solved.
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