• Code: C6901
• Description: DSC board mount failure 1
  • When MFP detects that DSC board is not properly installed.
• Remedy: 1 Correct the harness connection of DSC board if faulty. 2 Change DSC board. 3 Change MFPB.

• Code: C6902
• Description: DSC Bus check NG1-1
  • When DSC bus check detects an error.
• Remedy: 1 Correct the harness connection of DSC board if faulty. 2 Change DSC board. 3 Change MFPB.

• Code: C6903
• Description: DSC Bus check NG1-2
  • When DSC bus check detects an error.
• Remedy: 1 Correct the harness connection of DSC board if faulty. 2 Change DSC board. 3 Change MFPB.

• Code: C6F01
• Description: Scanner sequence trouble 1
  • The original transport interval becomes shorter than the designed value due to an original transport control error in original reading in ADF.
• Remedy: 1 Correct the harness connection between main body and ADF if faulty. 2 Change REYB/SCAN. 3 Change DFCB. 4 Change MFPB.

• Code: C8101
• Description: Before reading pressure welding alienation mechanism
  • During a pressure motion being performed, the reading roller release position sensor (PS12) output does not change from H to L. • During a retraction motion being performed, the reading roller release position sensor (PS12) output does not change from L to H.
• Remedy: 1 Check the connector between M3-relay CN5-DFCB J15 for proper connection and correct as necessary. 2 Check the connector between PS12-DFCB J15 for proper connection and correct as necessary. 3 Check the connector of M3 for proper drive coupling, and correct as necessary. 4 PS12 I/O check, sensor check. 5 M3 operation check. 6 Change M3. 7 DFCB F8 conduction check. 8 Change FSCB.

• Code: C8107
• Description: Glass cleaning mechanism trouble
  • The glass cleaning roller home sensor (PS13) is not turned ON after the set period of time has elapsed after the glass cleaning motor (M4) is turned ON.
• Remedy: 1 Check the connector between M4-DFCB J1 for proper connection and correct as necessary. 2 Check the connector between PS13-DFCB J8 for proper connection and correct as necessary. 3 Check the connector of M4 for proper drive coupling, and correct as necessary. 4 PS13 I/O check, sensor check. 5 M4 operation check. 6 Change M4. 7 DFCB F1 conduction check. 8 Change DFCB.

• Code: C8302
• Description: Cooling fan trouble
  • The lock signal continues to detect H during a given time while the DF cooling fan motor (FM1) is spinning
• Remedy: 1 Check the connector between FM1-DFCB J13 for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM1 operation check. 4 Change FM1. 5 DFCB F7 conduction check. 6 Change DFCB.

• Code: C9401
• Description: Exposure turning on the lamp trouble detection
  • The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment.
• Remedy: 1 Check the connection between the lamp harness and the inverter board, and correct if necessary. 2 Check the connector between INVB CN1- REYB/SCAN PJ7 for proper connection and correct as necessary. 3 Check the connector between REYB/ SCAN PJ2-MFPB PJ14 for proper connection and correct as necessary. 4 Check the connector between CCDB PJ2- MFPB PJ01 for proper connection and correct as necessary. 5 Change INVB. 6 Change exposure unit. 7 Change CCDB. 8 Change REYB/SCAN.