Sharp MX-C507P - Page 94

5028
Diagnostics and troubleshooting
60
Action
Yes
No
Step 9
Replace the transfer module. See “Transfer module removal” on
page 371 .
Does the problem remain?
Go to step 10.
The problem is
solved.
Step 10
Check the contacts on the imaging unit and the developer of the
missing color for dust or debris.
Are the contacts free of dust or debris?
Go to step 12.
Go to step 11.
Step 11
Clean the contacts between the developer and the imaging unit.
Does the problem remain?
Go to step 12.
The problem is
solved.
Step 12
• If the missing color is cyan, magenta, or yellow, then replace
the developer unit of the missing color.
• If the missing color is black, then replace the imaging unit.
Does the problem remain?
Go to step 13.
The problem is
solved.
Step 13
Check if the spring-loaded pins in the HVPS freely move in and out
with an equal amount of spring force.
Do the pins freely move?
Go to step 15.
Go to step 14.
Step 14
Replace the HVPS. See “HVPS removal” on page 356 .
Does the problem remain?
Go to step 15.
The problem is
solved.
Step 15
a Remove the imaging kit.
b Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Motor tests
c Go to the appropriate developer unit motor test for the missing
color, and then touch Start .
Does the motor run?
Go to step 17.
Go to step 16.
Step 16
Replace the defective EP drive motor. See “Motor (EP drive)
removal” on page 333 .
Does the problem remain?
Go to step 17.
The problem is
solved.