4026-0XX
| FRU | Action |
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5 | ROM SIMM | Reinstall the ROM SIMM. Check for +5 V dc at |
| and Optional | |
| Memory |
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| SIMM | Reinstall the optional memory SIMM if one was |
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| installed. Check for +5 V dc at |
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| rect, replace the optional memory SIMM. |
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6 | HVPS | Reconnect CN4 and check for +5 V dc at CN7- |
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| 4. If incorrect, replace the HVPS. |
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7 | Printhead | Reconnect CN5 and CN10. Check for +5 V dc at |
| Assembly | |
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| assembly. |
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8 | Thermistor | Reconnect CN2 and check for +5 V dc at CN7- |
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| 4. If incorrect, replace the thermistor/cable |
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| assembly. |
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Post Incomplete - ERROR LED remains on solid
Note: Be sure the top cover is closed when doing the following checks.
| FRU | Action |
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1 | LVPS | Disconnect the LVPS cable from the engine |
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| board. The voltage measures approximately +24 |
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| V dc between pin 1 (+24 V dc) and pin 2 (+24 V |
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| dc ground). If incorrect, replace the LVPS. |
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2 | Engine Board | Reconnect the LVPS cable and measure the |
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| voltage on |
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| approximately +24 V dc. If incorrect, disconnect |
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| CN3, CN4, CN6, CN9, CN10 and CN11 from the |
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| engine board. The voltage on |
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| +24 V dc. If incorrect, replace the engine board. |
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| If correct, reconnect one cable at a time check- |
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| ing the voltage at |
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| the problem is found. Replace the failing FRU. |
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| If the CN3 or CN9 are causing the problem, it is |
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| necessary to disconnect each solenoid and |
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| check the voltage at |
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| FRU. |
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