Problem
Cause
Remedy
Sample (Sample No.)
Banding
Developer cartridge trouble
Replace the developer cartridge.
SMP8
Photoconductor cartridge
trouble
Replace the photoconductor cartridge.
Scanner (writing) section
drive trouble
Adjust the installing position of the scanner
(writing) section drive part or replace it.
Scanner (writing) section
trouble
Replace the scanner (writing) section.
Drive section trouble
Adjust the installing position of the drive part
or replace it.
Uneven density
Scanner (reading) section dirt
Clean the scanner (reading) section.
SMP9
Scanner (writing) section dirt
Clean the scanner (writing) section.
Transfer charger voltage
trouble
Repair or replace the high voltage power PWB.
Transfer charger electrode
contact failure
Clean the transfer charger electrode.
Developing bias voltage
trouble
Repair or replace the high voltage power PWB.
Developing bias electrode
contact failure
Clean the developing bias electrode.
Main charger voltage trouble
Repair or replace the high voltage power PWB.
Main charger electrode
contact failure
Clean the main charger electrode.
Developer cartridge trouble
Replace the developer cartridge.
Photoconductor cartridge
trouble
Replace the photoconductor cartridge.
Streaks, black points or white
points in 78mm pitch
Photoconductor cartridge
trouble (dirt)
Clean or replace the developer cartridge.
SMP10
Streaks, black points or white
points in 45mm pitch
Fusing section trouble
Clean or replace the fusing section.
SMP11
Black streaks (Vertical to
paper transport direction)
Developer cartridge trouble
Replace the developer cartridge.
Photoconductor cartridge
trouble
Replace the photoconductor cartridge.
Laser unit trouble
Replace the upper frame unit.
Control PWB trouble
Repair the control PWB.
Transfer charger roller trouble
(dirt, moisture)
Clean the roller. If the abnormality continues,
replace it.
Developing roller trouble (dirt,
moisture)
Clean the roller. If the abnormality continues,
replace it.
Laser unit trouble
Replace the upper frame unit.
Scanner (writing) section dirt
Clean the scanner (writing) section.
White streaks (Vertical to
paper transport direction)
Developer cartridge trouble
Replace the developer cartridge.
Photoconductor cartridge
trouble
Replace the photoconductor cartridge.
Laser unit trouble
Replace the upper frame unit.
Control PWB trouble
Repair the control PWB.
Transfer charger roller trouble
(dirt, moisture)
Clean the roller. If the abnormality continues,
replace it.
Developing roller trouble (dirt,
moisture)
Clean the roller. If the abnormality continues,
replace it.
Scanner (writing) section dirt
Clean the scanner (writing) section dirt
Scanner (reading) section dirt
Clean the scanner (reading) section dirt
Fusing trouble
Abnormally low fusing
temperature
Check the temperature sensor and its
peripheral circuit. replace the thermistor.
Replace the heater lamp. Check the heater
drive circuit.
SMP4
Abnormally high fusing
temperature
Clean the fusing section.
Heat roller, pressure roller
trouble
Replace the heat roller/pressure roller.
FO-3800M
10 – 24