• Code: C6901
• Description: DSC board mount failure 1 When MFP detects that DSC board/1 (front side) is not properly installed.
• Causes: • DSC board/1 (DSCB/1; SC-508) • MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSCB/1 if faulty. 2 Replace the DSCB/1 3 Replace MFPB

• Code: C6902, C6903
• Description: DSC Bus check NG1-1, DSC Bus check NG1-2. When DSC bus check (front side) detects an error.
• Causes: • DSC board/1 (DSCB/1; SC-508) • MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSCB/1 if faulty. 2 Replace the DSCB/1 3 Replace MFPB

• Code: C6911
• Description: DSC board mount failure 2. When MFP detects that DSC board/2 (back side) is not properly installed.
• Causes: • DSC board/2 (DSCB/2; SC-508) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSCB/2 if faulty. 2 Correct the harness connection of DSIPB if faulty. 3 Replace DSCB/2 4 Replace DSIPB 5 Replace MFPB

• Code: C6912, C6913
• Description: DSC Bus check NG2-1, DSC Bus check NG2-2 When DSC bus check (back side) detects an error.
• Causes: • DSC board/2 (DSCB/2; SC-508) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSCB/2 if faulty. 2 Correct the harness connection of DSIPB if faulty. 3 Replace DSCB/2 4 Replace DSIPB 5 Replace MFPB

• Code: C6F01
• Description: Scanner sequence trouble 1 The original transport interval becomes shorter than the predetermined value due to an original transport control error in original reading in DF.
• Causes: • MFP board (MFPB) • DF control board (DFCB)
• Remedy: 1 Correct the harness connection between main body and DF if faulty. 2 Replace DFCB 3 Replace MFPB

• Code: C8101
• Description: Before reading pressure/retraction alienation mechanism • During a pressure motion being performed, the before read sensor (PS6) output does not change from H to L. • During a retraction motion being performed, the before read sensor (PS6) output does not change from L to H.
• Causes: • Reading roller pressure/retraction motor (M6) • Before read sensor (PS6) • DF control board (DFCB)
• Remedy: 1 Check the connector between M6-DFCB CN4 for proper connection, and correct as necessary. 2 Check the connector of M6 for proper drive coupling, and correct as necessary. 3 Check the connector between PS6-DFCB CN9 for proper connection, and correct as necessary. 4 PS6 I/O check, sensor check DFCB CN9-5 (ON) DF-702 3-C 5 M6 operation check DFCB CN4-20 (ON) DF-702 10-C 6 Replace M6 7 DFCB ICP9 conduction check 8 Replace DFCB

• Code: C8103
• Description: Lift up mechanism trouble (Upward movement) The lift up upper sensor (PS2) is not unblocked after a lapse of a given time after the lift-up motor (M5) moves up (is turned forward).
• Causes: • Lift-up motor (M5) • Lift-up upper sensor (PS2) • DF control board (DFCB)
• Remedy: 1 Check the connector between M5-DFCB CN11 for proper connection, and correct as necessary. 2 Check the connector of M5 for proper drive coupling, and correct as necessary. 3 Check the connectors between PS2-relay CN110- DFCB CN5 for proper connection, and correct as necessary. 4 PS2 I/O check, sensor check DFCB CN5-3 (ON) DF-702 10-C 5 M5 operation check DFCB CN11-4 to 7 DF-702 13-C 6 Replace M5 7 DFCB ICP13 conduction check 8 Replace DFCB

• Code: C8106
• Description: Lift up mechanism failure (Downward movement) The lift up lower sensor (PS3) is not blocked after a lapse of a given time after the lift-up motor (M5) goes down (is turned backward).
• Causes: • Lift-up motor (M5) • Lift-up lower sensor (PS3) • DF control board (DFCB)
• Remedy: 1 Check the connector between M5-DFCB CN11 for proper connection, and correct as necessary. 2 Check the connector of M5 for proper drive coupling, and correct as necessary. 3 Check the connector between PS3-DFCB CN12 for proper connection, and correct as necessary. 4 PS3 I/O check, sensor check DFCB CN12-12 (ON) DF-702 12-C 5 M5 operation check DFCB CN11-4 to 7 DF-702 13-C 6 Replace M5 7 DFCB ICP13 conduction check 8 Replace DFCB