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2Dark background density
•Has the image drum been exposed to external light?
| • | Yes | Mount the image drum in the printer and wait for about 30 minutes. |
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• | No | Is the heat roller of the fusing unit dirty? | |
| • | Yes | Clean the heat roller. |
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• | No | Is the contact of the cleaning roller of the image drum cartridge contacted with e | |
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| contact assembly properly? (See Figure | |
| • | No | Adjust the contact of the cleaning roller to contact the contact assembly prop- |
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| erly. |
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• | Yes | Replace the image drum cartridge. | |
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• Has the trouble been removed? |
•YES END
| Note: | After replacing the image drum cartridge, set the printer in the user |
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| maintenance mode by turning the power on while pressing the MENU |
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| key, and reset the drum counter. (Refer to User's Manual.) |
▼ | Replace the Main board or Power Supply Unit (High Voltage). | |
• No |
3Black paper is output.
•Is the LED head connected properly? (Check connector HEAD1 (14P), HEAD2 (12p) on the Main board and PC connector on the LED head.)
| • | No | Connect the LED head properly or replace the head cable. |
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• | Yes | Is the contact of the image drum cartridge contacted with the ground contact | |
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| properly. (See Figure | |
| • | No | Check the ground contact of the image drum cartridge. |
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• | Yes | Check the connectors HEAD1 (14P) and HEAD2 (12P) | |
| • | No | Replace the LED head. |
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• | Yes | Replace the connector | |
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• Has the trouble been removed. | |||
| • | YES | END |
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| Note: After replacing the LED head, set the printer in the engine mainte- |
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| nance mode by turning the power on while pressing the FORM FEED |
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| and ENTER keys. Set the LED head drive time. (Refer to Section |
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| 4.2.) |
▼ | No | Replace the Main board or Power Supply Unit (High Voltage). | |
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40930701TH DRAFT Vesion | 156 / |