• Code: C5604
• Description: PH configuration fault. A disagreement in PH unit configuration is detected.
• Causes: • PH unit • MFP board (MFPB)
• Remedy: 1. Check the type of the installed PH unit and replace it if it is a wrong one. 2. Check the connector between the PH unit-MFPB for proper connection and correct as necessary. 3. Replace MFPB.

• Code: C5605, C5606
• Description: • C5605: Engine communication data error • C5606: Engine transmission timeout. A communication error is detected between CPUs.
• Causes: MFP board (MFPB)
• 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. Rewrite the firmware. 3. MFPB ICP8E conduction check 4. Replace MFPB.

• Code: C5610
• Description: PH LD drive communication error. LD drive write data and read data disagree with each other a predetermined number of consecutive times.
• Causes: • Front side board (FRB) • PH unit • MFP board (MFPB)
• Remedy: 1. Reboot the machine. 2. Check the connector between FRB CN5-PH unit for proper connection and correct as necessary. 3. Check the connector between FRB CN2-MFPB CN10E for proper connection and correct as necessary. 4. Replace FRB. 5. Replace the PH unit. 6. Replace MFPB.

• Code: C5611
• Description: PH EEPROM communication error. Results of two readings of the EEPROM data disagree with each other.
• Causes: • Front side board (FRB) • PH unit • MFP board (MFPB)
• Remedy: 1. Reboot the machine. 2. Check the connector between FRB CN5-PH unit for proper connection and correct as necessary. 3. Check the connector between FRB CN2-MFPB CN10E for proper connection and correct as necessary. 4. Replace FRB. 5. Replace the PH unit. 6. Replace MFPB.

• 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] -> [System 2] -> [ADF Settings] is correct. It corrects, when a model is different. 3. Correct the harness connection between DFCB and DSIPB if faulty. 4. Check the connector between DSIPB CN01-MFPB CN22 for proper connection and correct as necessary. 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 main body.
• 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, C6103
• Description: • C6102: Drive system home sensor malfunction • C6103: Slider over running. C6102: • 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 (M201) 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). C6103: 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) • MFP board (MFPB)
• 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 CN4 for proper connection and correct as necessary. 5. Check the connector between PS201-SCDB CN6 for proper connection and correct as necessary. 6. Check the connector between SCDB CN2-MFPB CN12E for proper connection and correct as necessary. 7. PS201 I/O check, sensor check • Control signal: SCDB CN6-3 (ON) • Location of electrical component: 25-P 8. M201 operation check • Control signal: SCDB CN4-1 to 4 • Location of electrical component: 26-P 9. Replace SCDB. 10. Replace MFPB.

• Code: C6104, C6105
• Description: • C6104: Back side cleaning home sensor abnormality (initial) (When DF-704 is installed) • C6105: Back side cleaning home sensor abnormality (normal) (When DF-704 is installed). C6104: • 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. C6105: 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 • Control signal: DFCB J13-3 (ON) • Location of electrical component: DF-704 1-G 6. M5 operation check • Control signal: DFCB J9-1 to 4 • Location of electrical component: DF-704 6-G 7. Replace M5. 8. Replace DFCB.