Konica Minolta Bizhub 4700P Service Manual page 110

Action
Step 6
Check the gears on the cartridge gearbox for proper
rotation and for wear or damage.
Does it rotate properly and is it free of wear or damage?
Step 7
Check the cartridge gearbox cable for proper connection to
the controller board.
Is it properly connected?
Step 8
Check the cartridge gearbox cable for damage.
Is it free of damage?
bizhub 4700P/bizhub 4000P Service Manual
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Yes
Go to step 7.
Go to step 8.
Replace the controller
board. See Controller
board removal.
No
Replace the cartridge
gearbox. See Cartridge
gearbox removal.
Reseat the cable.
Replace the cartridge
gearbox. See Cartridge
gearbox removal.