Most likely a broken cyan drive coupling, there was a bulletin on this.
Measure against E027-0x00 and E021-0x00 due to broken coupling.pdf
- Code: E021-0300
- Description:Error in C Developing Motor
The motor failed to rotate at the specified speed. - Remedy:1. Check the load applied to the Developing Assembly (turn the gear with your hand to check if the load is appropriate. If the load is too much, replace the Developing Assembly). 2. Select the following in Service Mode: COPIER > FUNCTION > PART-CHK > MTR; and turn M7 to check the drive of the Developing Motor. If it’s not rotating properly, check the harness (to see if the harness is caught, disconnected or physically removed). 3. (If the above measures do not solve the problem,) replace the Drum Driver PCB (UN4).
Leave a comment: