Black/White Spot; Light Image - Xerox Phaser 3300 Servce Manual

Print-Quality Troubleshooting

Black/White Spot

Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer

Light Image

Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
5-12
Dark or blurry black spots occur periodically in the printing.
White spots occur periodically in the printing.
Check and Cause
If dark or blurry black spots occur
periodically, the rollers in the Print
Cartridge may be contaminated with
foreign matter or paper particles.
(Charge roller: 37.7 mm interval
OPC drum: 75.5 mm interval)
If faded areas or voids occur in
a black image at intervals of 75.5 mm,
or black spots occur elsewhere, the OPC
drum surface is damaged.
If a black image is partially broken, the
transfer voltage is abnormal or the
transfer roller's life has expired.
The printed image is light, with no ghost.
Check and Cause
Check if the Toner Save Mode is off.
Developer roller is stained when the
print cartridge is near end of life.
Ambient temperature is below 10 °C.
Bad contact caused by the toner stains
between the high voltage terminal in the
HVPS and the one in the set.
Abnormal output from the HVPS.
Solution
Run OPC cleaning Mode Print and run
the Self-test 2 or 3 times.
In case of 75.5 mm interval
unremovable in 1, cleanly remove
foreign substances stuck on the OPC
location equivalent to black spots and
white spots with a dry duster.
The transfer roller guarantees 70.000
sheets printing. If the roller's life is
expired, replace it.
In case of 37.7 mm interval
unremovable in 1, take measures as to
replace the print cartridge and try to
print out.
Clean the inside of the set against the
paper particles and foreign matter in
order not to cause the trouble.
Solution
Set Toner Save Mode to OFF.
Replace the print cartridge and try to
print out.
Wait 30 minutes after printer is powered
on before you start printing.
Clean up the contaminated area by the
toner.
Replace the HVPS if the problems are
not solved by the above four directions.
Phaser 3300MFP Service Manual