2NC/2NF/2NG/2NN/3P7/3P8/3P9
1-4-77
(8) Uneven density longitudinally.
Print example
Cause of trouble
1. Dirty LSU inside
2. The transfer roller is not pressed against the drum properly.
3. Drum condensation.
Defective part
Check description
Corrective Action
1
Transfer roller unit
Check that the transfer roller unit
is properly fit.
1. If it is not fixed properly, fix it properly.
2. If the conveying unit has not been cloed,
check how the conveying guide is locked
and open the conveying guide once, then
close.
3. Replace the transfer roller unit.
(see page 1-5-44)
2
Drum unit
1. Check toner is evenly
layered on its surface.
2. Check whether the device
has been operated under a
highly humid environment.
1. Execute drum refreshing.
2. Install a cassette heater.
3. Replace the drum unit. (see page 1-5-40)
3
Developer unit
Check that toner is evenly lay-
ered on the developer roller.
Replace the developer unit.. (see page 1-5-35)
4
LSU
The emission of laser dispersed
from the LSU is not even. (Mirror
is dropped off inside.)
Replace the LSU. (see page 1-5-27)
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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