Konica-Minolta bizhub C3350

Display procedure

• The machine's CPU performs a self-diagnostics function that, on detecting a malfunction, gives the process caution information in the report that is output by [Service Mode] -> [List Output] -> [Management List].
• When receiving the process caution information, user can continue printing. However, as the information indicates that some error has occurred in the image stabilization process, the error must be addressed rapidly.

List

• If an image stabilization fault occurs, the process caution information is provided.

1. LD failure
   No response is provided from the temperature/ humidity sensor.
2. IDC Sensor failure
   IDC sensor output values are out of the specified range.
3. Imaging unit (C) failure
   Imaging unit (M) failure
   Imaging unit (Y) failure
   Imaging unit (K) failure
   The amount of toner of each test pattern is lower than the lower limit value of the effective range.
4. Color Shift Test Pattern failure
   • The number of points detected in the main scan direction is more or less than the specified value during main scan direction registration correction.
   • The number of points detected in the sub scan direction is more or less than the specified value during sub scan direction registration correction.
5. Color Shift Adjust failure
   • The color shift amount is greater than the specified range during main scan direction registration correction.
   • The color shift amount is greater than the specified range during sub scan direction registration correction.
   • The skew correction amount is greater than the specified value.
6. CCD gain adjustment failure
   It is detected that the CCD clamp gain adjustment value is faulty.

LD failure

Contents

• Erase LED/Y (EL/Y)
• Erase LED/M (EL/M)
• Erase LED/C (EL/C)
• Erase LED/K (EL/K)
• PH unit
• MFP board (MFPB)
• Printer control board (PRCB)

Procedure

1. Replace the PH unit.
2. Replace MFP
3. Replace PRCB.

IDC sensor failure

Contents

• IDC sensor (IDCS)
• IDC sensor shutter solenoid (SD2)
• Transfer belt unit
• Printer control board (PRCB)
• High voltage power supply (HVPS)

Procedure

1. Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty.
2. Change the image transfer belt unit if the transfer belt is damaged.
3. Reinstall or reconnect IDCS, sensor shutter or connector, if it is installed or connected improperly.
4. Clean IDCS if it is dirty.
5. Check the HVPS connector for proper connection and correct as necessary.
6. SD2 operation check.
7. Replace IDCS.
8. Replace PRCB.

Imaging unit (C) failure, Imaging unit (M) failure, Imaging unit (Y) failure, Imaging unit (K) failure

Contents

• Imaging unit/Y,M,C,K
• IDC sensor (IDCS)
• IDC sensor shutter solenoid (SD2)
• Printer control board (PRCB)
• High voltage power supply (HVPS)
• Transfer belt unit

Procedure

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 and correct as necessary.
3. Clean IDCS window if dirty.
4. Clean the contact of the imaging unit connector if dirty.
5. Check the HVPS connector for proper connection and correct as necessary.
6. SD2 operation check.
7. Replace the imaging unit.
8. Replace the transfer belt unit.
9. Replace HVPS.
10. Replace PRCB.

Color regist test pattern failure

Contents

• Transfer belt unit
• PH unit
• IDC sensor shutter solenoid (SD2)
• Printer control board (PRCB)
• MFP board (MFPB)

Procedure

1. Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty.
2. Change the image transfer belt unit if the transfer belt is damaged.
3. SD2 operation check.
4. Replace PH unit.
5. Replace MFPB.
6. Replace PRCB.

Color regist adjust failure

Contents

• IDC sensor (IDCS)
• IDC sensor shutter solenoid (SD2)
• Printer control board (PRCB)

Procedure

1. Slide out the imaging unit and reinstall it in position.
2. Reinstall or reconnect IDCS if it is installed or connected improperly.
3. SD2 operation check.
4. Change IDCS.
5. Change PRCB.

CCD gain adjustment failure

Contents

• Scanner unit
• MFP board (MFPB)

Procedure

1. Correct the harness connection between the scanner unit and MFPB CN102, CN103 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, or change scanner mirror.
5. Replace the scanner unit.
6. Replace MFPB.