Samsung CLX-9252 Series Service Manual page 441

7.3.12 Uneven density in main scan d
A. Typical faulty images yp
B. Troubleshooting procedure
Step
1 The problem has been eliminated through
LD lightness balance adjust. g
2 The surface of the OPC drum is scratched
3 Dirty on the outside.
4 The surface of the LSU window is dirty.
5 5 Check that the spring does not come of d Check that the spring does not come of d
the pressure operation of the transfer rolle
6 Transfer belt unit makes positive contact w
plates on rails.
7 Is abnormality found in the cam gear?
8 The problem has been eliminated through
checks of steps up to 6.
Service Manual
y g
Check item
j
7. Troubles shooting
direction (Vertical Band)
h the Go to next step.
d. Change imaging unit.
Clean.
Clean with cleaning jig.
uring uring Correct. Correct
er.
Change transfer roller unit.
with Check and correct contacts.
Change transfer belt unit.
h the Change imaging unit.
 Change LSU.
 Change HVPS board.
7-1 44
Action
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