Canon iR Advance C2025

Error Code:

Code: E020-0020
Description: ATR Sensor (Y) error or toner supply error
Error in detected TD ratio. The average of ATR reference value is the specified value or lower at the time of ATR Sensor (Y) initialization.
Remedy: 1. Check if the Drum Unit (Y) is installed. 2. Check the Drum Unit Relay PCB (Y) (UN26) 3. Check the Drum Unit Memory PCB (Y) (UN30) 4. Check the harness/connector between the DC Controller PCB (UN09/ J25) and the Drum Unit Relay PCB (Y) (UN26). 5. Replace the Drum Unit (Y). 6. Replace the DC Controller PCB (UN09)

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