• Code: C6001
• Description: DF related configuration error 1. Inconsistency in the configuration with the installed DF is detected on the main body.
• Causes: • DF control board (DFCB) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
• Remedy: 1 Check the type of the installed DF and replace it if it is a wrong one. 2 Check to see the [Service mode] -> [System2] -> [ADF settings] is correct. It corrects, when a model is different. 3 Correct the harness connection between DFCB and DSIPB if faulty. 4 Correct the harness connection between DSIPB and MFPB if faulty. 5 Replace DFCB 6 Replace DSIPB 7 Replace MFPB

• Code: C6002
• Description: DF related configuration error 2. Inconsistency in the configuration with the installed DF is detected on the DF.
• Causes: • DF control board (DFCB) • Dual scan image processing board (DSIPB)
• Remedy: 1 Check the type of the installed DF and replace it if it is a wrong one. 2 Correct the harness connection between DFCB and DSIPB if faulty. 3 Check the connectors of the dual scan image processing board (DSIPB) for proper connection, and correct as necessary. (Direction of the point of contact and connection state of the flat cable in particular)

• Code: C6102
• Description: Drive system home sensor malfunction. • The scanner home sensor (PS201) is unable to detect the scanner located at its home position. • The scanner home sensor (PS201) is unable to detect a scanner even when the scanner motor has been driven to move the scanner over the maximum travelling distance. • The scanner home sensor (PS201) detects the scanner when the scanner has moved the maximum travelling distance from the position, at which it blocks the scanner home sensor (PS201).
• Causes: • Scanner home sensor (PS201) • Scanner motor (M201) • Scanner drive board (SCDB) • Printer control board (PRCB)
• Remedy: 1 Correct or change the scanner drive (pulley, gear, belt) if it is faulty. 2 Correct the scanner motor set screw if loose. 3 Adjust [Image Position: Leading Edge] and [Sub Scan Zoom Adj.]. 4 Check the connector between M201-SCDB PJ4 for proper connection and correct as necessary. 5 Check the connector between PS201-SCDB PJ6 for proper connection and correct as necessary. 6 Check the connector between SCDB PJ2-PRCB CN43 for proper connection and correct as necessary. 7 PS201 I/O check, sensor check SCDB PJ6-3 (ON) 27-P 8 M201 operation check SCDB PJ4-1 to 4 27-P 9 Replace SCDB 10 Replace PRCB

• Code: C6103
• Description: Slider over running. The scanner home sensor (PS201) detects the scanner at its home position during a period of time that begins with the time when a prescan command and a scan preparation command are executed and ends when a home return command is executed.
• Causes: • Scanner home sensor (PS201) • Scanner motor (M201) • Scanner drive board (SCDB) • Printer control board (PRCB)
• Remedy: 1 Correct or change the scanner drive (pulley, gear, belt) if it is faulty. 2 Correct the scanner motor set screw if loose. 3 Adjust [Image Position: Leading Edge] and [Sub Scan Zoom Adj.]. 4 Check the connector between M201-SCDB PJ4 for proper connection and correct as necessary. 5 Check the connector between PS201-SCDB PJ6 for proper connection and correct as necessary. 6 Check the connector between SCDB PJ2-PRCB CN43 for proper connection and correct as necessary. 7 PS201 I/O check, sensor check SCDB PJ6-3 (ON) 27-P 8 M201 operation check SCDB PJ4-1 to 4 27-P 9 Replace SCDB 10 Replace PRCB

• Code: C6104
• Description: Back side cleaning home sensor abnormality (initial). • The CIS cleaning sensor (PS7) does not change from H to L even after the lapse of a given period of time after the home position detecting operation is started at the initial operation. • The CIS cleaning sensor (PS7) does not change from L to H even after the lapse of a given period of time after the home position detecting operation is started at the initial operation.
• Causes: • CIS cleaning sensor (PS7) • CIS cleaning motor (M5) • DF control board (DFCB)
• Remedy: 1 Check if the opening and closing guide is firmly closed. 2 Check the connector between M5-DFCB J9 for proper connection, and correct as necessary. 3 Check the connector of M5 for proper drive coupling, and correct as necessary. 4 Check the connector between PS7-DFCB J13 for proper connection, and correct as necessary. 5 PS7 I/O check, sensor check DRCB J13-3 (ON) DF-701 1-G 6 M5 operation check DRCB J9-1 to 4 DF-701 6-G 7 Replace M5 8 Replace DFCB

• Code: C6105
• Description: At the time of operation other than the initial operation, the CIS cleaning sensor (PS7) error is detected.
• Causes: • CIS cleaning sensor (PS7) • CIS cleaning motor (M5) • DF control board (DFCB)
• Remedy: 1 Check if the opening and closing guide is firmly closed. 2 Check the connector between M5-DFCB J9 for proper connection, and correct as necessary. 3 Check the connector of M5 for proper drive coupling, and correct as necessary. 4 Check the connector between PS7-DFCB J13 for proper connection, and correct as necessary. 5 PS7 I/O check, sensor check DRCB J13-3 (ON) DF-701 1-G 6 M5 operation check DRCB J9-1 to 4 DF-701 6-G 7 Replace M5 8 Replace DFCB

• Code: C6704
• Description: Image input time out. Image data is not input from the scanner to the MFP board (MFPB).
• Causes: • MFP board (MFPB) • CCD board (CCDB)
• Remedy: 1 Select [Service Mode] -> [State Confirmation] -> [Memory/HDD Adj.] -> [Memory Bus Check] -> [Scanner -> Memory], and conduct the memory bus function. 2 Check the connectors between scanner section and MFPB for proper connection and correct as necessary. 3 Replace MFPB 4 Replace CCDB

• Code: C6751
• Description: CCD clamp/gain adjustment failure. • The adjustment value is 0 or 255 during a CCD clamp adjustment. • The peak value of the output data is 64 or less during a CCD gain adjustment.
• Causes: • LED exposure unit (LU201) • CCD board (CCDB) • MFP board (MFPB)
• Remedy: 1 Check the connector between CCDB PJ3-MFPB PJ01 for proper connection and correct as necessary. 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 CCDB 6 Replace MFPB