Causes: The engine soft SW8-3 in SIM55-1 is set to "1". The PTC control is not executed. (The PTC does not operate.) When the engine soft SW8-3 in SIM55-1 is set to "1", the PTC output, the heater control, and the error detection are disabled. When this setting is made in case of a PTC unit trouble, the PTC function is disabled regardless of the PTC trouble and printing operation can be performed.
Remedy: Set the engine soft SW8-3 in SIM55-1 to "0". (The mode returns to the normal PTC control mode.)
Code: C4-20
Description: Primary transfer output trouble
Causes: The primary transfer unit is not installed properly./ Trouble. High voltage 1TC PWB trouble. High voltage MC PWB trouble. PCU PWB trouble. Connector, harness connection trouble.
Remedy: Replace the primary transfer unit. Check disconnection of the high voltage 1TC PWB connector./Replace. Check disconnection of the high voltage MC PWB connector./Replace. Replace the PCU PWB.
Code: E6-10
Description: Shading error (Black correction)
Causes: Installation error of the CCD unit harness. CCD unit trouble. DSPF PWB trouble.
Remedy: Check the installing state of the harness to the CCD unit. Check the CCD unit. Check the DSPF PWB.
Code: E6-11
Description: Shading error (White correction)
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.
Code: E6-14
Description: CCD-ASIC error
Causes: DSPF PWB trouble.
Remedy: Check the DSPF PWB.
Code: E7-01
Description: MFP image data error
Causes: Image data transfer error in the MFPC PWB. MFPC PWB trouble.
Remedy: Check connection of the connector and the harness of the MFPC PWB. Check or replace the MFPC PWB.