Toshiba DP120F Service Manual page 686

4.7.1 Vertical Black Line(s)
Step
1
Is the light (sunlight, and so on) coming in
from an opening of the machine?
2 Is the Charger wire in the Drum unit dirty?
3 Is the Fuser cleaner stained or are there
any foreign material stuck to the Fuser
cleaner?
4 Are the paper transport mechanism and/
or feed rollers (Pickup roller, Paper feed
roller or Exit roller) dirty?
5 Is the Fuser dirty?
6 Is the bottom of the Developer assembly
with Drum unit dirty?
7 When no problem is found in the steps
above, the Drum unit, the LSU, or the Main
PBA them selves may be defective.
4.7.2 Horizontal Black Line(s)/Horizontal White Line(s)
Step
1 Are the paper transport mechanism and/
or feed rollers (Pickup roller, Paper feed
roller or Exit roller) dirty?
2 Is the lens of the LSU dirty?
3 Is the Fuser dirty?
4 Are there any foreign obstacles stuck to
the feed gears?
5 Are there any foreign obstacles stuck to
the gears of the Drum unit?
6
Are the black or white lines clearly printed?
7
If no problem is found in the steps above,
the Drum unit or the Main PBA may be
defective.
DP120F/DP125F Troubleshooting
Check points
Check points
Move the machine to another place or use
a curtain to shut out the light.
Clean the Charger wire using a Charger
cleaner.
Replace the Fuser cleaner.
Clean the paper transport section and roll-
ers.
Clean or replace the Fuser.
Clean the bottom of the Developer assem-
bly with Drum unit. (Be careful not to touch
the drum surface.)
Replace in the order of: Drum unit, LSU,
Main PBA.
Clean the paper transport section and roll-
ers.
Clean the lens.
Clean or replace the Fuser.
Clean the gears or replace the Feed gear
assembly.
Clean the gears or replace the Drum unit.
Replace the LSU.
Replace in the order of: Drum unit, Main
PBA.
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Solutions
Solutions
March 2000 © TOSHIBA TEC