Samsung CLX-9250ND - Blank Copy, Black Copys

7. Trouble
s
A. Typical faulty images
7.3.10 Blank copy , Black copy
Blank copy
B. Troubleshooting procedure
Step Section Check item
1 Image check A blank copy occurs.
A
black copy occurs
2 Imaging unit Coupling of imaging uni
t
mechanism is installed
properly.
3 The OPC drum charge
c
voltage contact of OPC
d
ground contact of the im
unit is connected prope
r
4 High voltage unit Connector is connected
properly.
5
Mi t ll
Cti td
5
M
a
i
n con
t
ro
ll
er
C
onnec
t
or
i
s connec
t
e
d
properly
6 The problem has been
eliminated through the c
step 5.
Service Manual
CLX-9250/9350 series
7-1
s
hooting
Black copy
Result Action
Yes Check LSU connector for
proper connection.
Yes Check HVPS connector for
proper connection, especially,
Corona Charger and Grid
Voltage
t
drive No Check and correct drive
transmitting coupling. Change
imaging unit.
c
orona
d
rum
aging
r
ly.
No Check, clean, or correct the
contact.
No Reconnect.
N
Rtthbl
N
o
R
econnec
t
th
e ca
bl
e
between video control board
and engine control board
heck of
No Change high voltage unit.
 Change printer control
board
 Change LSU.
SAMSUNG ELECTRONICS
66
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