Canon iR Advance C250i
- Code: E074-0000
- Description: Primary Transfer Roller disengagement control error
Signal was not detected although the ITB Pressure Release Switch was turned ON/OFF for 6 times. - Remedy: [Related parts] - ITB Unit (Unit of replacement: INTER. TRANSFER BELT ASS’Y) - Harnesses from the DC Controller PCB to the ITB Pressure Release Switch 1. DC Controller PCB (UN04/J162) to Relay Connector (2P) (Unit of replacement: PROCESS CONTROL PCB ASS’Y) 2. Relay Connector (2P) to ITB Pressure Release Switch (SW07/J6005) - Harness between the DC Controller PCB (UN04/J140) and the Primary Transfer Separation Solenoid (SL01/J5708) (Unit of replacement: MAIN DRIVE ASSEMBLY) - Fuse in the DC Controller PCB (UN04/FU07) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) - ITB Guide Rail (Unit of replacement: RAIL, I.T.B., FRONT/ RAIL, I.T.B., REAR) - Main Drive Unit (Unit of replacement: MAIN DRIVE ASSEMBLY) - DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [Points to note at work] When checking the harness/cable or connector, perform the following work. 1. Disconnect and then connect the connector to check that there is no bent pin and cable disconnection. 2. Visually check that the harness is not caught or open circuit. 3. If there is any error, replace the corresponding harness/cable. [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check that the ITB Unit is installed in the machine. 2. Replace the ITB Unit. 3. Check the harness between the DC Controller PCB and the ITB Pressure Release Switch. 4. Check the harness between the DC Controller PCB and the Primary Transfer Separation Solenoid. 5. Measure the both ends of the fuse in the DC Controller PCB using a tester. a. If the measurement value is less than 1 ohm (conduction state), 1. Replace the ITB Guide Rail (Front/Rear). 2. Replace the Main Drive Unit. 3. Replace the DC Controller PCB. b. If the measurement value is 1 ohm or higher (non conduction state), replace the DC Controller PCB. [Caution] After replacing the DC Controller PCB, measure the resistance value between the Low-voltage Power Supply PCB (UN01/J315/4-pin) and the DC Controller PCB (UN04/J20/1- pin) using a tester before turning ON the main power to prevent blowout of a fuse again. If the measurement value is 1 ohm or higher (non conduction state), perform the following in the order while checking whether the error is cleared. 1. Replace the harness between the DC Controller PCB and the ITB Pressure Release Switch. 2. Replace the harness between the DC Controller PCB and the Primary Transfer Separation Solenoid. [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
| Error Code | |
| Service Mode, Troubleshooting | |
| Parts Catalog | |
| Compatibility | |
| Downloads Files | |
| Home |
Send message to us