Description: Imaging unit (C) failure, Imaging unit (M) failure, Imaging unit (Y) failure, Drum/Development unit (K) failure. • All density readings taken from the density pattern produced on the transfer belt are 1.0 g/m2 (IDC sensor photo receiver output) or less during max. density adjustment (Vg/Vdc adjustment). • All density readings taken from the density pattern produced on the transfer belt are 4.0 g/m2 (IDC sensor photo receiver output) and more during max. density adjustment (Vg/Vdc adjustment).
Causes: • Imaging unit/Y,M,C • Drum unit/K • Developing unit/K • IDC sensor/Fr (IDCS/Fr) • IDC sensor/Rr (IDCS/Rr) • MFP board (MFPB) • High voltage unit (HV) • Transfer belt unit
Remedy: 1. Select [Imaging Process Adjustment] -> [Max Image Density Adj] and, if the setting value is negative, readjust. 2. Check the drive transmission portion of the imaging unit or drum/developing unit and correct as necessary. 3. Clean the IDC sensor/Fr (IDCS/Fr) or IDC sensor/Rr (IDCS/Rr) window if dirty. 4. Clean the contact of the imaging unit or drum/developing unit connector if dirty. 5. Check the HV connector for proper connection and correct as necessary. 6. Replace the imaging unit/Y,M,C. 7. Replace the drum unit/K. 8. Replace the developing unit/K. 9. Replace the transfer belt unit. 10. Replace HV. 11. Replace MFPB.
Code: S-1
Description: It is detected that the CCD clamp gain adjustment value is faulty.
Causes: • LED exposure unit • CCD unit • CCD board (CCDB) • MFP board (MFPB)
Remedy: 1. Correct the harness connection between CCDB PJ1-MFPB CN7 if faulty. 2. Check for possible extraneous light and correct as necessary. 3. Clean the lens, mirrors, CCD surface, and shading sheet if dirty. 4. Correct reflective mirror of the scanner if faulty. 5. Replace the CCD unit. 6. Replace MFPB.