Canon iR Advance C350

Error Code:

Code: E021-0220
Description: Developing Screw rotation detection error (M)
The difference between the maximum and the minimum of sampling values detected by the ATR Sensor (M) in the Drum Unit (M) was 0.5 V or less.
Remedy: [Related parts] - Drum Unit (M) (Unit of replacement: DEVE_UNIT_M) - Harness between the Drum Unit Relay PCB (M) (UN09/J6002) and the DC Controller PCB (UN04/J160) (Unit of replacement: PROCESS CONTROL PCB ASS’Y) - Drum Unit Relay PCB (M) (UN09) (Unit of replacement: PROCESS CONTROL PCB ASS’Y) - Drum Unit Memory PCB (M) (UN13) (Unit of replacement: DEVE_UNIT_M) - DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) - Main Drive Unit (Unit of replacement: MAIN DRIVE 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. - If the Drum Unit Memory PCB (M) is soiled, clean it with a blower. [Remedy] Check/replace the related 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

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