Sharp MX-C507P Service Manual page 74

Background or gray background check
ABCDE
ABCDE
ABCDE
Action
Step 1
a
From the home screen, touch Settings > Reports > Device >
Device Statistics.
b
Check the status of the imaging unit if it was recently replaced.
Does the status show that the imaging unit was recently replaced?
Step 2
Check if only one color is producing the background of the print
job.
Is only one color producing the background?
Step 3
•
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 4
Replace the imaging kit.
Does the problem remain?
Step 5
Reseat the HVPS cable on the HVPS and on the JHVPS1 connector
on the controller board.
Does the problem remain?
Step 6
Check the contact pins connecting the HVPS to the transfer
module for damage.
Are the contact pins damaged?
Step 7
Replace the HVPS. See
Does the problem remain?
Leading edge
Trailing edge
"HVPS removal" on page
Diagnostics and troubleshooting
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 7.
Go to step 8.
356.
40
5028
No
Go to step 3.
Go to step 4.
The problem is
solved.
The problem is
solved.
The problem is
solved.
Go to step 8.
The problem is
solved.