Void Area, White Spots - Minolta magicolor 7300 Service Manual

FrameMaker Ver.6E (PC) magicolor 7300 TROUBLESHOOTING
02.08.08
(9)

Void area, white spots

<Troubleshooting Procedure>
Section Step
PU 1 The surface of the PC
Drum is scratched.
2 Dirty on the outside.
Transfer 3 Fingerprints, oil, or other
Belt Unit foreign matter is evident on
the Transfer Belt.
4 Image Transfer Belt is dirty
or scratched.
5 Image Transfer Roller is
dirty or scratched.
6 Charge Neutralizing Cloth
is not separated and
ground terminal is
connected properly.
Paper path 7 There is foreign matter on
paper path.
8 Pre-Image Transfer Guide
Plate is damaged or dirty.
9 The problem has been
eliminated by checking up
to Step 8.
<Typical Faulty Images>
Void areas White spots
4011T008AA
4011T030AA
Check Item Result
YES Change the PU.
YES Clean.
YES Clean with specified solvent.
YES Clean dirty belt with a soft cloth.
YES Replace the Transfer Belt Unit.
NO
YES Remove foreign matter.
YES Clean or change.
NO
T-51
Action
D-31DISASSEMBLY/REAS-
SEMBLY
Change Transfer Belt Unit if belt
is damaged.
Correct or change.
Change the PU.
→ Replace the Transfer Belt Unit.