7-22
TROUBLESHOOTING
Service Manual
Fault
Signs
Cause & Check
Solution
White Black spot
Recycled product
• Light or dark black
dots on the image
occur periodically.
• White spots occur
in the image period-
ically.
• Poor appearance of
the toner cartridge.
• Unclean and rough
printouts.
• Bad background in
the image.
1. If light or dark periodical black
dots occur, this is because the
toner cartridge rollers are cont-
aminated with foreign sub-
stance or paper particles.
(1)38mm interval : Charged
roller
(2)95mm interval : OPC cycle
2. If white spots occur in a black
image at intervals of 95mm, or
black spots occur elsewhere,
the OPC drum is damaged or
foreign substance is stuck to
the surface.
3. If a black and white or graphic
image is partially broken at
irregular intervals, the transfer
roller's life has been expired or
the transfer voltage is abnor-
mal.
1. Poor appearance of the toner
cartridge.
(1)Check the damage to label
and whether different materi-
als are used.
(2)Check the appearance of
parts of the toner cartridge,
such as frame, hopper.
2. Unclean and rough printouts.
(1)Check whether foreign sub-
stance or toner are stuck to
the terminal (contact point) of
the toner cartridge.
(2)Check whether the state of
the terminal assembly is nor-
mal.
1. In case of 1 above -
Run OPC Cleaning Mode Print
4-5 times repeatedly to remove.
Especially check foreign sub-
stance on the OPC surface, then
remove them with a clean gauze
moistened with IPA(Isopropyl
Alcohol) not to damage OPC if
necessary.
Never use usual alcohol.
2. In case of 2
If they are not disappeared by
running OPC Cleaning Mode
Print 4-5 times.
: at intervals of 38.5mm - Replace
the toner cartridge.
: at intervals of 96mm - Remove
foreign substance.
: Broken image - Replace the
toner cartridge according to
carelessness.
3. In case of 3 - Exchange the
transfer roller because the life of
the transfer roller in use has been
expired. (Check the transfer volt-
age and readjust if different.)
1. In case of 1 -
(1)If there is an evidence of disas-
sembling the toner cartridge.
(2)If materials other than normal
parts of the toner cartridge are
added or substituted.
2. In case of 2 - If there are any
abnormals in connection with the
situation of 1.
(1)It occurs when the toner car-
tridge is recycled over 2 times.
(2)If toner nearly being expired
are collected to use, it is
judged as the recycled toner
cartridge.
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Содержание Phaser 3450
Страница 12: ...3 4 Specifications Service Manual ...
Страница 28: ...4 16 Summary of Product Service Manual ...
Страница 75: ...6 20 Alignment Adjustments Service Manual ...
Страница 103: ...7 28 TROUBLESHOOTING Service Manual ...
Страница 129: ...9 2 BLOCKDIAGRAM Service Manual ...
Страница 131: ...10 2 CONNECTION DIAGRAM Service Manual ...