京瓷2200打印機顯示維修呼叫c7900

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京瓷2200打印機顯示維修呼叫c7900

孔懌倩 2019-9-24

  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.