DP120F/DP125F Troubleshooting
11-74
March 2000 © TOSHIBA TEC
4.7.1 Vertical Black Line(s)
4.7.2 Horizontal Black Line(s)/Horizontal White Line(s)
Check points
Are the paper transport mechanism and/
or feed rollers (Pickup roller, Paper feed
roller or Exit roller) dirty?
Is the lens of the LSU dirty?
Is the Fuser dirty?
Are there any foreign obstacles stuck to
the feed gears?
Are there any foreign obstacles stuck to
the gears of the Drum unit?
Are the black or white lines clearly printed?
If no problem is found in the steps above,
the Drum unit or the Main PBA may be
defective.
Solutions
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.
Step
1
2
3
4
5
6
7
Check points
Is the light (sunlight, and so on) coming in
from an opening of the machine?
Is the Charger wire in the Drum unit dirty?
Is the Fuser cleaner stained or are there
any foreign material stuck to the Fuser
cleaner?
Are the paper transport mechanism and/
or feed rollers (Pickup roller, Paper feed
roller or Exit roller) dirty?
Is the Fuser dirty?
Is the bottom of the Developer assembly
with Drum unit dirty?
When no problem is found in the steps
above, the Drum unit, the LSU, or the Main
PBA them selves may be defective.
Solutions
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.
Step
1
2
3
4
5
6
7
Summary of Contents for DP120F
Page 1: ...PLAINPAPERFACSIMILE File No 31200001 R0112216901 TTEC ...
Page 401: ...DP120F DP125F Circuit Description 7 92 March 2000 TOSHIBA TEC 07 05 00 Fig 7 5 1 ...
Page 656: ...DP120F DP125F Troubleshooting 11 44 March 2000 TOSHIBA TEC ...
Page 700: ...DP120F DP125F Appendix 12 2 March 2000 TOSHIBA TEC 1 2 Error Count List ...
Page 701: ...March 2000 TOSHIBA TEC 12 3 DP120F DP125F Appendix 1 3 Function List for Maintenance ...
Page 702: ...DP120F DP125F Appendix 12 4 March 2000 TOSHIBA TEC 1 4 Drum Unit ...
Page 703: ...March 2000 TOSHIBA TEC 12 5 DP120F DP125F Appendix 1 5 Memory Dump List ...
Page 706: ...SHUWA SHIBA PARK BLDG A 2 4 1 SHIBA KOEN MINATO KU TOKYO 105 8524 JAPAN ...