24xx
| FRU/Symptom | Action |
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2 | Printer power | The cause of this problem may be that the |
| sometimes turns | power circuit is failing, or the wiring is |
| off. | intermittently open. Check the following in |
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| sequence: |
|
| 1. Check the user’s outlet voltage and be |
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| sure it is within tolerance. |
|
| 2. Check the continuity of the power cord. |
|
| 3. Disconnect the power supply cable from |
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| connector CN12 on the logic board. Turn the |
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| printer power on and check all dc output |
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| voltages at |
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| Verify the following output voltages: |
|
| CN12 - 1 (+40 V dc ±10%) |
|
| CN12 - 2 (+40 V dc ±10%) |
|
| CN12 - 3 (GND) |
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| CN12 - 4 (GND) |
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| CN12 - 5 (Signal GND) |
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| CN12 - 6 (+5 V dc ±5%) |
|
| • If one of the voltages is 0, go to “Power |
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| Service Check” on page |
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| • If the voltages are not 0 but are incorrect, |
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| replace the power supply unit. |
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3 | Intermittently poor | • Remove paper jams from the paper path. |
| print quality. | • Clean all feed roller surfaces. |
|
| |
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| • Clean the ribbon shield and printhead. |
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| • Clean the platen surface. |
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| • Install the ribbon cartridge correctly. If the |
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| ribbon has reached end of life, have the user |
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| replace the ribbon cartridge. |
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|
Diagnostic Information
