2NC/2NF/2NG/2NN/3P7/3P8/3P9
1-4-74
(5) White streaks are printed vertically.
Print example
Cause of trouble
1. Dirty LSU slit glass.
2. Foreign objects inside the developer unit.
3. Internal contamination
4. Dirty drum inside.
Defective part
Check description
Corrective Action
1
Developer unit
Executing U089 to generate
PGs. (see page 1-3-41)
Replace the developer unit.
(see page 1-5-35)
2
Light path between
the LSU and the
drum
Check if there are dusts, dirts, or
toner obstructing the light paths.
If a foreign object exists on the frame or the
sealings between the developer unit and the
drum unit, remove.
3
Drum unit
Check if the charging roller is
dirty.
If the charging roller is dirty,clean. Or replace it.
Check if the discharging lamp is
dirty.
If the discharging lamp is dirty,clean.
4
LSU
Check if the LSU slit glass is
dirty.
If the LSU slit glass is dirty,
perform laser scanner cleaning.
5
Transfer roller unit
Check whether a white streak
occurs at the same position as
the smear on the transfer roller.
Clean the transfer roller if it is dirty.
Replace the drum unit. (see page 1-5-40)
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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