
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1683,1685, 1887, 1688 and 1690
Serial Test Error Codes
| Serial port test failed |
| 1. Check port configuration | |
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| 2. Replace the system board and retest. | |
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| Hard Drive Test Error Codes | ||
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| Hard drive format test failed |
| 1. Run the Configuration and | |
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| Diagnostics Utilities and verify drive |
| Hard drive read test failed |
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| Hard drive write/read/compare |
| 2. Verify that all secondary drives have | |
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| secondary drive capability. | |
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| 3. Replace the hard drive and retest. |
| Hard drive random seek test failed |
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| 4. Replace the system board and retest. |
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| Hard drive controller test failed |
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| Hard drive ready test failed |
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| Hard drive recalibration test failed |
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| Hard drive format bad track test |
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| Hard drive reset controller test |
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| Hard drive park head test failed |
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| Hard drive head select test failed |
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| Hard drive conditional format test |
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| Hard drive ECC* test failed |
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| Hard drive power mode test failed |
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| Network preparation test failed |
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| Drive monitoring test failed |
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* ECC = Error Correction Code |
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| Video Test Error Codes | ||
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Video controller test failed

Video memory test failed

Video attribute test failed 
Video character set test failed
Video 80 x 25 mode 9 x 14 character cell test failed
Video 80 x 25 mode 8 x 8 character cell test failed
The following apply to error codes 501- xx through
1.Disconnect external monitor and test with internal LCD display.
2.Replace the display assembly and retest.
3.Replace the system board and retest.
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