Kyocera KM5050
- Code: C7900
- Description: Drum EEPROM error Reading from or writing to EEPROM cannot be performed.
- Causes: Poor contact in the connector terminals. Defective drum unit.
- Remedy: Poor contact in the connector terminals. Check the connection of connector on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Defective drum unit. Replace the drum unit.
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