• Code: 074-0001-05
• Description: Primary Transfer Roller disengagement HP timeout error
• Causes: The Primary Transfer Roller Detachment HP Sensor did not detect home position within the specified period of time.
• Remedy: [Related parts] R1.00 - Harness between the ITB Relay PCB (UN28/J2701) and the Primary Transfer Roller Detachment HP Sensor (PS4/J7113) - Harnesses connecting the DC Controller PCB (UN2/J1240), the Drawer Unit (J8050) and the ITB Relay PCB (UN28/J2700) - Primary Transfer Roller Detachment HP Sensor (PS4) - ITB Relay PCB (UN28) - DC Controller PCB (UN2) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check that the Primary Transfer Roller (Pressure Release Lever, Link and Cam) is free of foreign matter or soiling. 2. Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES

• Code: 074-0002-05
• Description: ITB Unit pressure error
• Causes: When applying pressure on the ITB Unit (at power-on/recovery from sleep/opening and closing of the door), pressure failure was detected.
• Remedy: [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check that the ITB Pressure Release Lever is in the engaged state. 2. When pulling out the ITB Unit, check that the unit is on the rails and the edges of the 2 ITB Pressure Arms at the front side of the unit are fitted in the grooves of the ITB Frame. [CAUTION] If the ITB Pressure Arm is soiled with toner, clean it with a cloth tightly wrung out of water. 3. Check that the shafts of the Primary Transfer Roller are fitted in the Shaft Support.

• Code: 075-0000-05
• Description: ITB displacement control error
• Causes: The Steering Drive HP Sensor detected home position error.
• Remedy: [Related parts] R1.00 - Harness connecting from the ITB Relay PCB (UN28/J2701) to the Steering Drive HP Sensor and ITB Steering Drive Motor (PS3/J7416 and M4/J7414) - Steering Drive HP Sensor (PS3) - ITB Steering Drive Motor (M4) - ITB Relay PCB (UN28) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 075-0001-05
• Description: ITB displacement control error
• Causes: The ITB Displacement Sensor detected lower limit error.
• Remedy: [Related parts] R1.00 - Harness between the ITB Relay PCB (UN28/J2702) and the ITB Displacement Sensor (PS2/ J7415) - ITB Displacement Sensor (PS2) - ITB Relay PCB (UN28) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 075-0002-05
• Description: ITB displacement control error
• Causes: The ITB Displacement Sensor detected upper limit error.
• Remedy: [Related parts] R1.00 - Harness between the ITB Relay PCB (UN28/J2702) and the ITB Displacement Sensor (PS2/ J7415) - ITB Displacement Sensor (PS2) - ITB Relay PCB (UN28) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check that the ITB Displacement Sensor and the Sensor Flag are properly installed. 2. Check/replace the related harness/cable, connector and parts.

• Code: 077-0001-05
• Description: Secondary Transfer Roller disengagement HP timeout error
• Causes: The Secondary Transfer Roller Detachment HP Sensor did not detect home position within the specified period of time.
• Remedy: [Related parts] R1.00 - Harness between the Fixing Feed Driver PCB (UN5/J1503) and the Secondary Transfer Roller Detachment HP Sensor (PS22/J7214) - Harnesses connecting the DC Controller PCB (UN2/J1222), the Drawer Unit (J8023) and the Fixing Feed Driver PCB (UN5/J1510) - Harness between the Pickup Feed Driver PCB (UN4/J1483) and the Secondary Transfer Roller Detachment Motor (M31/J7003) - Harness between the DC Controller PCB (UN2/J1212) and the Pickup Feed Driver PCB (UN4/ J1486) - Secondary Transfer Roller Detachment HP Sensor (PS22) - Secondary Transfer Roller Detachment Motor (M31) - Fixing Feed Driver PCB (UN5) - Pickup Feed Driver PCB (UN4) - DC Controller PCB (UN2) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES

• Code: 100-0101-05
• Description: Laser Scanner Motor BD (Y) error
• Causes: PLOCK signal (Y) was not detected during BD rotation of the Laser Scanner Motor.
• Remedy: [Related parts] R1.00 - Harness between the DC Controller PCB (UN2/J1200) and the Relay PCB (UN7/J1817) - Harnesses between the DC Controller PCB (UN2/J1259, J1220 and J1221) and the Laser Interface PCB (UN106/J15, J10 and J16) - Harness between the Laser Interface PCB (UN106/J70) and the Laser Scanner Unit (Y) (J8076) - Laser Scanner Unit (Y) - Laser Interface PCB (UN106) - DC Controller PCB (UN2) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES

• Code: 100-0201-05
• Description: Laser Scanner Motor BD (M) error
• Causes: PLOCK signal (M) was not detected during BD rotation of the Laser Scanner Motor.
• Remedy: [Related parts] R1.00 - Harness between the DC Controller PCB (UN2/J1200) and the Relay PCB (UN7/J1817) - Harnesses between the DC Controller PCB (UN2/J1259, J1220 and J1221) and the Laser Interface PCB (UN106/J15, J10 and J16) - Harness between the Laser Interface PCB (UN106/J70) and the Laser Scanner Unit (M) (J8070) - Laser Scanner Unit (M) - Laser Interface PCB (UN106) - DC Controller PCB (UN2) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES