2NC/2NF/2NG/2NN/3P7/3P8/3P9
1-4-69
(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
terminals 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 (YC1) and main/engine
PWB (YC3) :Charger
Main charging current supplied
by the high voltage PWB is
faulty.
Replace the high voltage PWB.
(see page 2-2-18)
3
Laser scanner unit
(LSU)
Switching on and off the laser
diode on the LSU PWB is out of
control.
Replace the LSU. (see page 1-5-27)
4
Main/Engine PWB
The main/engine PWB is detec-
tive.
Replace the main/engine PWB.(see page 2-2-
11)
Summary of Contents for DP-480
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Page 455: ...Installation Guide DP 480 Document processor Installation Guide ...
Page 458: ...2 3 4 5 6 A ...
Page 459: ...3 7 8 9 B C C ...
Page 460: ...4 10 ...
Page 473: ...PF 480 300 sheet Paper feeder Installation Guide ...
Page 476: ...2 5 6 4 3 B M3x8 B M3x8 B M3x8 B M3x8 1 2 ...
Page 477: ...3 9 10 8 7 1 2 ...
Page 478: ...4 13 12 11 1 2 C ...
Page 479: ...5 15 14 E D D E D D E D D E D D ...
Page 482: ...DU 480 duplex unit Installation Guide ...
Page 484: ...1 2 3 1 A B M3x8 ...
Page 485: ...2 6 7 5 4 A A B M3x8 ...
Page 489: ...IB 33 Network interface kit Installation Guide ...
Page 490: ...2 3 1 IB 33 2013 7 303PB56710 01 A B ...
Page 491: ...6 7 5 4 2013 7 303PB56710 01 B YC2007 A ...
Page 492: ...FAX System X Installation Guide ...
Page 495: ...2 5 4 3 2 B M3x8 A YC 2003 ...
Page 496: ...3 8 9 7 6 C G G 8 9 7 6 C ...
Page 497: ...4 11 10 12 13 D D E ...
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