
Diagnostic Error Codes
The remaining tables list possible error codes
✎Retest the system after completing each step. If the problem has been resolved, do not proceed with the remaining steps.
For assistance in the removal and replacement of a particular subassembly, see the “Removal and Replacement Procedures” chapter in this manual.
Microprocessor
Error Code | Description |
| Recommended Action |
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CPU test failed. | The following steps apply to | ||
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Coprocessor error. | 1. | Run Computer Checkup or Computer Setup | |
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| and retest. |
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| 2. | Replace processor and retest. |
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| 3. | Replace the system board and retest. |
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| |
DMA controller failed. | The following step applies to | ||
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Interrupt controller failed. | Replace the system board and retest. | ||
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Port error. |
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Keyboard controller |
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| |
| failed. |
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CMOS RAM test failed. | The following steps apply to | ||
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CMOS interrupt test failed. | 1. | Replace the battery/clock module and | |
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| retest. |
CMOS clock test failed. | 2. | Replace the system board and retest. | |
Programmable timer test | 3. | Replace the system board and retest. | |
| failed. |
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Protected mode test failed. | Replace the system board and retest. | ||
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Speaker test failed. | Verify the speaker connection. | ||
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| Replace speaker (if applicable) and retest. | |
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| Replace the system board and retest. | |
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| |
Installed devices test failed. | Check system configuration. | ||
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| Verify cable connections. | |
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| Check switch settings. | |
|
| Run Diagnostics utility. |
Remove all devices except processor and replace
Replace the system board.
| Service Reference Guide |