Faulty ATDC Sensor
- The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec. after the Main Motor (M1) has started turning is less than 5% (greater than 4.63 V).
- The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec. after the Main Motor (M1) has started turning is 19% or more (1.41 V or less).

Check to see if developer is available. 2 Check the ATDC Sensor connectors for proper connection and correct as necessary. 3 Change UN1. 4 Run ?gATDC Auto Adjust. 5 Change PWB-A. 6 Change PU1