Printer Monocolor: Uneven Density In Cd - Minolta CF2002 Service Manual

(16) Printer Monocolor: uneven density in CD

<Troubleshooting Procedure>
Section Step
IU 1 The surface of the PC Drum is
scratched.
2 Dirty on the outside.
LPH Assy 3 The surface of the lens array is
dirty.
Image 4 Image Transfer Belt Unit
Transfer makes positive contact with
Belt Unit plates on rails.
5 Cam gear operates properly.
6 The problem has been elimi-
nated through the checks of
steps up to 5.
<Typical Faulty Images>
4011T032AA
Check Item
T-90
4011T043AA
Result Action
YES Change IU.
YES Clean.
YES Clean with cleaning jig.
NO Check and correct contacts.
NO Change Image Transfer Belt
Unit.
NO Change IU.
→
Change Image Transfer
Belt Unit.
→
Change High Voltage Unit
(Developing Bias).
→
Change High Voltage Unit
(Image Transfer, Neutralizing).