• 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 welding alienation mechanism trouble. • During a pressure motion being performed, the document reading sensor (PS6) output does not change from H to L. • During a retraction motion being performed, the document reading sensor (PS6) output does not change from L to H.
• Causes: • Reading roller release motor (M4) • Document reading sensor (PS6) • DF control board (DFCB)
• Remedy: 1 Check the connector between M4-DFCB J18 for proper connection and correct as necessary. 2 Check the connector of M4 for proper drive coupling, and correct as necessary. 3 Check the connector between PS6-DFCB J10 for proper connection and correct as necessary. 4 PS6 I/O check, sensor check DFCB J10-3 (ON) DF-701 2-G 5 M4 operation check DFCB J18-4 to 5 DF-701 1-G 6 Replace M4 7 FSCB F8 conduction check 8 Replace DFCB

• Code: C8107
• Description: Glass cleaning mechanism trouble. The document reading glass cleaning sensor (PS13) is not turned ON after the set period of time has elapsed after the document reading glass cleaning motor (M6) is turned ON.
• Causes: • Document reading glass cleaning motor (M6) • Document reading glass cleaning sensor (PS13) • DF control board (DFCB)
• Remedy: 1 Check the connector between M6-DFCB J8 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 PS13-DFCB J15 for proper connection and correct as necessary. 4 PS13 I/O check, sensor check DFCB J15-5 (ON) DF-701 3-G 5 M6 operation check DFCB J8-1 to 4 DF-701 1-B 6 Replace M6 7 Replace 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. • The lock signal continues to detect L during a given time while the cooling fan (FM1) is during halts.
• Causes: • DF cooling fan motor (FM1) • DF control board (DFCB)
• Remedy: 1 Check the connector between FM1-DFCB J16 for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM1 operation check DFCB J16-3 (ON) DF-701 7-G 4 Replace FM1 5 DFCB F6 conduction check 6 Replace DFCB

• Code: C8401
• Description: Data flash failure. Data flash does not access normally
• Causes: DF control board (DFCB)
• Remedy: 1 Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2 Check the DFCB connector for proper connection and correct as necessary. 3 Rewrite the firmware. 4 Replace DFCB

• Code: C9401
• Description: Exposure LED lighting failure. The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment.
• Causes: • LED exposure unit (LU201) • Flat cable (LED exposure unit) • CCD board (CCDB) • Scanner drive board (SCDB) • Printer control board (PRCB) • MFP board (MFPB
• Remedy: 1 Check the connection between SCDB PJ3-LU201, and correct if necessary. 2 Check the connector between SCDB PJ2-PRCB CN43 for proper connection and correct as necessary. 3 Check the connector between CCDB PJ3-MFPB PJ01 for proper connection and correct as necessary. 4 Replace the LED exposure unit 5 Replace CCDB 6 SCDB F1 conduction check 7 Replace SCDB 8 Replace PRCB 9 Replace MFPB

• Code: C9402
• Description: Exposure LED lighting abnormally. The average output value of the CCD sensor with the scanner at its standby position is a predetermined value or more at the end of a scan job.
• Causes: • LED exposure unit (LU201) • Flat cable (LED exposure unit) • CCD board (CCDB) • Scanner drive board (SCDB) • Printer control board (PRCB) • MFP board (MFPB)
• Remedy: 1 Check the connection between SCDB PJ3-LU201, and correct if necessary. 2 Check the connector between SCDB PJ2-PRCB CN43 for proper connection and correct as necessary. 3 Check the connector between CCDB PJ3-MFPB PJ01 for proper connection and correct as necessary. 4 Replace the LED exposure unit 5 Replace CCDB 6 SCDB F1 conduction check 7 Replace SCDB 8 Replace PRCB 9 Replace MFPB