Utax P-4532DN - (1-2) No image appears (entirely black)

7-5
Troubleshooting ＞ Image formation problems
[CONFIDENTIAL]
(1-2)No image appears (entirely black)
Print example Cause of trouble
1 No main charging.
2 The laser from the LSU is activated simultaneously.
Defective part Check description Corrective Action
1
Charging roller Check whether the charging roller is
properly mounted.
If the charging roller is not fixed properly, fix the
roller properly.
Check whether the connecting ter-
minals of the charging roller and
high-voltage PWB are deformed.
If the connecting terminals are deformed, correct for
a proper conduction.
2
High voltage PWB Check the connection of the con-
nectors. Or, verify conduction of the
wires.
Reinsert the connector if its connection is loose.
Replace the cable if it has no conduction.
High voltage PWB (YC101) and control PWB
(YC19):Charger
Main charging current supplied by
the high voltage PWB is faulty.
Replace the high voltage PWB.
3
Laser scanner unit
(LSU)
Switching on and off the laser diode
on the LSU PWB is out of control.
Replace the LSU.
4
Control PWB The control PWB is detective. Replace the control PWB.