Sharp MX-C507P Service Manual page 76

Action
Step 5
•
If the affected color is cyan, magenta, or yellow, then replace
the developer unit of the affected color.
•
If the affected color is black, then replace the imaging unit.
Does the problem remain?
Step 6
a
Remove the imaging kit.
b
Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Motor tests
c
Select the developer unit motor of the affected color, and then
touch Start.
Does the motor run?
Step 7
Replace the motor. See
333.
Does the problem remain?
Step 8
a
Manually turn the motor.
b
While turning the motor, check if the couplers that drive the
imaging kit move.
Do the couplers move?
Step 9
Replace the EP gear box. See
page 339.
Does the problem remain?
Step 10
Check if the pins on the HVPS freely move.
Do the pins freely move?
Step 11
Replace the HVPS. See
Does the problem remain?
Step 12
Check the continuity of the cable on the JSC1 connector on the
controller board.
Does the cable have continuity?
"Motor (EP drive) removal" on page
"EP gear box removal" on
"HVPS removal" on page
Diagnostics and troubleshooting
Yes
Go to step 6.
Go to step 8.
Go to step 8.
Go to step 10.
Go to step 10.
Go to step 12.
Go to step 12.
356.
Go to step 14.
42
5028
No
The problem is
solved.
Go to step 7.
The problem is
solved.
Go to step 9.
The problem is
solved.
Go to step 11.
The problem is
solved.
Go to step 13.