Kyocera Copystar 4002i 5002i Error C7301 Fix Repair

For informational purposes and Field Service Tech use only. Kyocera Copystar 4002i 5002i 6002imay also pertain to the 4003i 5003i 6003i Error C7301 Repair. This video goes through basic field onsite troubleshooting of the toner motor feeding system. Checking to see if the motor works in the service mode U132. Problem in this case was a broken gear in the developer unit DV8550K or newer number DV8560K. Replacement of the developer was needed. At 4:18 if toner is not filled to the top of the developer unit, the problem may be with the Toner Hopper Assembly instead, part number 302NK94034 for Mono, a lot bigger job to replace from the rear of the machine, here&the procedure for replacing the hopper Assembly: Remove transfer belt, drum and developer units. Remove rear upper, lower, right upper, top rear, and left upper covers. Remove main board cage assembly 4 connectors at top and 3 screws {2 on left and 1 behind ribbon cable) Swing out main board cage assembly. Remove High Voltage Black cover guide, 2 screws and 6-8 tabs. Remove High Voltage PCB. Loosen High Voltage metal Frame. Remove upper black vents top left and right. Remove main drive Assembly 5 screws and disconnect PCB connectors and release harnesses from multiple wire saddles, also release waste toner clip before removing. Remove Black toner motor Assembly Remove Hopper Assembly