Canon BJC-55 Service Manual page 188

Part 5: Maintenance
6. Print Defect <3>
Other Print
Problems
Symptom
¥ Smeared paper
¥ Spur tracks appear
¥ Misaligned vertical
lines appear
¥ Corrugated printing
¥ Irregular darkness
of printout
Check Item
Ink mist on the platen.
Ink has clogged around the
head's nozzles. (No smearing
during paper feeding and
discharging).
Ink has clogged or paper bits
have stuck around the purge
unit's head wiper or head
capping area.
Ink has adhered to the paper
transport system. (The paper is
already smeared by the time it
reaches the platen).
Ink has adhered to the spurs.
Spurs have deformed
The BJ cartridge is installed
incorrectly.
The problem re-occurs when the
user's BJ cartridge (causing the
problem) is installed in a
normally-operating printer.
Chassis is deformed.
Frinctional wear between the
carriage unit and the carriage
shaft.
Check the printing mode.
BJ cartridge is faulty.
5-28
Measures
Use a soft cloth moistened with
water to clean.
Clean a few times, If the problem
persists, replace the BJ
cartridge.
Replace printer base unit.
Clean the paper feed roller and
the platen.
Use a soft toothbrush to clean.
Replace the print unit.
Reinstall the BJ cartridge
correctly.
Replace the BJ cartridge.
Replace the print unit.
Replace the print unit.
Reset the printing mode.
Replace the BJ cartridge.
BJC-50