Description: 1. ADF Cover is open. 2. ADF is not installed correctly. 3. ADF Cover Sensor is disconnected. 4. ADF Cover Sensor is defective. 5. LVPS connector is disconnected. 6. LVPS is defective.
Causes:
Code: U21
Description: While the copier is initializing, the ADF Cover was opened.
Causes:
Code: U52
Description: 1. SC/SPC PCB connector is disconnected. 2. SC/SPC PCB is defective.