Printer Monocolor: Blank Copy, Black Copy - Minolta CF2002 Service Manual

(23) Printer Monocolor: blank copy, black copy

<Troubleshooting Procedure>
Section Step
Image Check 1
IU 2
3
High Voltage 4
Unit (Image
Transfer, Neu-
tralizing)
5
<Typical Faulty Images>
Blank copy
4011T035AA
Check Item
A blank copy occurs.
Coupling of IU drive mecha-
nism is installed properly.
The PC Drum Charge
Corona voltage contact or
PC Drum ground contact of
the Imaging Unit is con-
nected properly.
Connector is connected
properly.
The problem has been elim-
inated through the check of
step4.
T-100
Black copy
4011T036AA
Result
YES Check LPH Unit connector for
proper connection.
Check the LED Drive Board
connectors for proper connec-
tion.
NO Check and correct drive trans-
mitting coupling.
Change IU.
NO Check, clean, or correct the
contact.
NO Reconnect.
NO Change High Voltage Unit
(Image Transfer, Neutralizing).
→
Change PIC Board.
→
Change LED Drive Board.
→
Change LPH Unit.
Action