• Code: E025 0410
• Description: Bottle Motor error (Bk). The Toner Supply Sensor (Bk) did not detect change for 1 sec or longer while the Bottle Motor (CK) was rotated at toner supply.
• Remedy: [Related parts] • Harnesses from the Bottle Motor (CK) to the DC Controller PCB 1. Bottle Motor (CK) (M05) to Relay Connector (2P) (Unit of replacement: CABLE, BOTTLE DRIVE MOTOR) 2. Relay Connector (2P) to DC Controller PCB (UN04/J127) (Unit of replacement: CABLE, TONER BOTTLE) • Harness between the Toner Supply Sensor (Bk) (PS29/J1062) and the DC Controller PCB (UN04/J127) (Unit of replacement: CABLE, TONER BOTTLE) • Toner Supply Sensor (Bk) • Bottle Drive Unit (CK) (Unit of replacement: BOTTLE DRIVE ASSEMBLY, C, K) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E025 0420
• Description: Bottle Motor error (Bk). Rotation of bottle was detected while the Toner Bottle Motor (Bk) was OFF.
• Remedy: [Related parts] • Harnesses from the Bottle Motor (CK) to the DC Controller PCB 1. Bottle Motor (CK) (M05) to Relay Connector (2P) (Unit of replacement: CABLE, BOTTLE DRIVE MOTOR) 2. Relay Connector (2P) to DC Controller PCB (UN04/J127) (Unit of replacement: CABLE, TONER BOTTLE) • Harness between the Toner Supply Sensor (Bk) (PS29/J1062) and the DC Controller PCB (UN04/J127) (Unit of replacement: CABLE, TONER BOTTLE) • Toner Supply Sensor (Bk) • Bottle Drive Unit (CK) (Unit of replacement: BOTTLE DRIVE ASSEMBLY, C, K) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E025 0468
• Description: No toner detection error (Bk). The state without toner was detected although the recovery sequence was performed for 5 times after replacement of the Toner Container (Bk).
• Remedy: [Related parts] • Toner Container (Bk) • Bottle Drive Unit (CK) (Unit of replacement: BOTTLE DRIVE ASSEMBLY, C, K) • Developing Unit (Bk) (UN24) (Unit of replacement: DEVELOPING ASSEMBLY, BK) ITB Rail Rear Unit (Unit of replacement: I.T.B. RAIL ASSEMBLY, REAR) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: E029 5008
• Description: Registration Patch Sensor (Front) density error. The background regular reflection output of the Registration Patch Sensor Unit (Front) did not fall within the range from 115 to 1000 at initialization of the Developing Unit.
• Remedy: [Related parts] • Harnesses from the Registration Patch Sensor Unit (Front) to the DC Controller PCB 1. Registration Patch Sensor Unit (Front) (UN26/J1022) to Relay Connector (16P) (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) 2. Relay Connector (16P) to DC Controller PCB (UN04/J120) (Unit of replacement: NEW OLD SENSING HOLDER UNIT) • Registration Patch Sensor Unit (Front) (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) • DC Controller PCB (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check if the sensor window of the Registration Patch Sensor Unit (Front) is soiled. If it is soiled, clean it with lint-free paper moistened with water. 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: E029 7008
• Description: Registration Patch Sensor (Rear) density error. The background regular reflection output of the Registration Patch Sensor Unit (Rear) did not fall within the range from 115 to 1000 at initialization of the Developing Unit
• Remedy: [Related parts] • Harnesses from the Registration Patch Sensor Unit (Rear) to the DC Controller PCB 1. Registration Patch Sensor Unit (Rear) (UN25/J1066) to Relay Connector (16P) (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) 2. Relay Connector (16P) to DC Controller PCB (UN04/J120) (Unit of replacement: NEW OLD SENSING HOLDER UNIT) • Registration Patch Sensor Unit (Rear) (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) • DC Controller PCB (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check if the sensor window of the Registration Patch Sensor Unit (Rear) is soiled. If it is soiled, clean it with lint-free paper moistened with water. 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: E073 0001
• Description: Interlock error. The Interlock (24 V) was not detected although all the doors of the host machine were closed.
• Remedy: [Related parts] • Harnesses from the Interlock Switch 1 and 2 to the DC Controller PCB 1. Interlock Switch 1 and 2 (SW02 and SW03) to Relay Connector (9P) (Unit of replacement: CABLE, INTERLOCK SWITCH) 2. Relay Connector (9P) to DC Controller PCB (UN04/J133) (Unit of replacement: CABLE, SENSOR) • Harness between the Low Voltage Power Supply PCB (UN01/ J315 and J322) and the DC Controller PCB (UN04/J100 and J115) (Unit of replacement: POWER SUPPLY ASSEMBLY) • Low Voltage Power Supply PCB (UN01) (Unit of replacement: POWER SUPPLY ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E074 0001
• Description: ITB HP time out error. The HP Sensor in the Main Drive Unit did not detect home position within the specified period of time.
• Remedy: [Related parts] • Harnesses from the DC Controller PCB to the Primary Transfer Roller Disengagement HP Sensor 1. DC Controller PCB (UN04/J131) to Relay Connector (3P) (Unit of replacement: CABLE, MAIN DRIVE) 2. Relay Connector (3P) to Primary Transfer Roller Disengagement HP Sensor (PS33/J1189) (Unit of replacement: CABLE, SENSOR) • Harness between the DC Controller PCB (UN04/J131) and the Primary Transfer Roller Disengagement Motor (M08/J1201) (Unit of replacement: CABLE, MAIN DRIVE) • Harness between the DC Controller PCB (UN04/J129) and the Bk Drum_ITB Motor (M02/J1054) (Unit of replacement: CABLE, MAIN DRIVE) • Primary Transfer Roller Disengagement HP Sensor (PS33) • Primary Transfer Roller Disengagement Motor (M08) • Bk Drum_ITB Motor (M02) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Main Drive Unit (Unit of replacement: MAIN DRIVE ASSEMBLY) • ITB Unit (Unit of replacement: INTER. TRANSFER BELT ASS'Y) [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: E074 0002
• Description: ITB HP time out error. There was no change after the HP Sensor in the Main Drive Unit detected home position
• Remedy: [Related parts] • Harnesses from the DC Controller PCB to the Primary Transfer Roller Disengagement HP Sensor 1. DC Controller PCB (UN04/J131) to Relay Connector (3P) (Unit of replacement: CABLE, MAIN DRIVE) 2. Relay Connector (3P) to Primary Transfer Roller Disengagement HP Sensor (PS33/J1189) (Unit of replacement: CABLE, SENSOR) • Harness between the DC Controller PCB (UN04/J131) and the Primary Transfer Roller Disengagement Motor (M08/J1201) (Unit of replacement: CABLE, MAIN DRIVE) • Harness between the DC Controller PCB (UN04/J129) and the Bk Drum_ITB Motor (M02/J1054) (Unit of replacement: CABLE, MAIN DRIVE) • Primary Transfer Roller Disengagement HP Sensor (PS33) • Primary Transfer Roller Disengagement Motor (M08) • Bk Drum_ITB Motor (M02) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Main Drive Unit (Unit of replacement: MAIN DRIVE ASSEMBLY) • ITB Unit (Unit of replacement: INTER. TRANSFER BELT ASS'Y) [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