Description: Conflict firmware and EEPROM data version (SCU)
Causes: Inconsistency between the SCU firmware version and the EEPROM data version.
Remedy: Check the combination of the firmware.
Code: C1-01
Description: Charger cleaner trouble (K)
Causes: The main charger unit (K) is not installed properly. There is an abnormality in the main charger unit (K). Connector connection trouble of the drum unit (K) HP sensor, the discharge lamp, or the after-transfer discharge lamp. Harness disconnection of the drum unit (K) HP sensor, the discharge lamp, or the after-transfer discharge lamp. HP sensor dirt. Charger cleaner motor (K) trouble. PCU PWB connector connection trouble/PWB trouble.
Remedy: Use SIM6-4 to check the operation of the charger cleaner. Check disconnection of the main charger unit./ Replace. Check for disconnection of the connector of the drum unit (K) HP sensor, the discharge lamp, and the aftertransfer discharge lamp. Check the harness of the drum unit (K) HP sensor, the discharge lamp, and the after-transfer discharge lamp. (Since the earth wire is common to them, check the three positions.) Clean the HP sensor. Check disconnection of the PCU PWB connector./ Replace PWB. Replace the charger cleaner motor (K).
Code: C1-10
Description: Main charger trouble (Monochrome)
Causes: The main charger unit (K) is not installed properly. There is an abnormality in the main charger unit (K). Disconnection of the high voltage PWB connector. Breakage of the high voltage harness. High voltage PWB trouble. PCU PWB trouble.
Remedy: Check the output of the main charger with SIM8-2. Check disconnection of the main charger./Replace. Check disconnection of the high voltage PWB connector./Replace. Replace the high voltage PWB. Replace the PCU PWB.
Code: C4-20
Description: Transfer high voltage output trouble
Causes: Transfer unit abnormality. Transfer unit insertion trouble. TC output harness disconnection, breakage. Transfer unit separation operation trouble. OPC drum abnormality (Does not rotate.) High voltage PWB trouble. PCU PWB trouble. PCU PWB - high voltage PWB harness disconnection, breakage.
Remedy: Replace the transfer unit. Reinsert the transfer unit. Check or replace the TC output harness. Replace the high voltage PWB. Replace the PCU PWB. Check the harness between the PCU PWB and the high voltage PWB, and replace as needed.
Causes: Installation error of the CCD unit harness. Copy lamp lighting trouble. Dirt on the mirror, the lens, or the reference white plate. CCD unit trouble. DSPF PWB trouble. Shading SIM not executed / Shading ROM abnormality.
Remedy: Check the installing state of the harness the CCD unit. Check the installing state of the harness to the copy lamp unit. Clean the mirror, the lens, or the reference white plate. Check the CCD unit. Check the DSPF PWB.