4069-XXX
| FRU | Action |
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3 | +5 V dc at any Option | Check for +5 V dc on any of the |
| Connector | option connectors. The easiest to |
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| access is the envelope feeder |
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| connector located behind the lower |
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| front door. If +5 V dc is present at |
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| any of the connectors, go to step 9. If |
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| +5 V dc is not present, go to step 4. |
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4 | +5 V dc at the controller | Check for +5 V dc at the +5 V dc test |
| board test point | pad located on the controller board. |
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| If correct, go to step 9. |
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5 | +5 V dc at the engine board | Check for +5 V dc at the +5 V dc test |
| Test Point | point on the engine board. If correct, |
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| replace the engine board. If |
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| incorrect, go to step 6. |
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6 | LVPS Fuse F1 | Remove the LVPS from the printer |
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| and check fuse F1. Replace the fuse |
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| if the fuse is blown. |
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7 | LVPS Fuse F1 - Continues | Replace fuse F1 if necessary. Turn |
| to blow after LVPS installed | the LVPS on/off switch Off and |
| in the printer. | connect the AC line cord and turn |
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| the LVPS On. |
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| CAUTION: Before checking fuse F1 |
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| turn the LVPS Off and disconnect |
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| the AC line cord. Check fuse F1. If |
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| the fuse is blown, replace the LVPS. |
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8 | LVPS | Remove the LVPS from the machine. |
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| CAUTION: Before making any |
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| measurements on the LVPS output |
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| connector, observe all necessary |
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| safety precautions before applying |
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| AC power. Measure the voltage on |
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| LVPS output connector CN3. The |
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| voltage measures +5 V dc. If |
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| incorrect, replace the LVPS. |
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Diagnostic Information
