White Streaks Or Missing Dots - Canon BJ-30 User Manual

Problem
White streaks or missing
dots
108
Troubleshooting
Cause
Print head nozzles may be
clogged with dust.
The ink tank may be empty.
BJ cartridge may be
installed incorrectly.
The print medium being
used may not be acceptable.
The resolution set in the
printer driver may be
180 dpi (the print mode
may be HS mode).
The print head may be
worn out.
Solution
Execute the quick cleaning of
the print head (see page 79);
then print a Nozzle pattern
(see page 42). Repeat
cleaning if necessary. If print
quality is not recovered after
executing the cleaning two or
three times, execute the
extensive cleaning
procedure.
Open the front cover and
check the contents of the ink
tank. If there is not any
liquid ink in the ink tank,
replace it with a new one.
Make sure the BJ cartridge
and/or ink tank are installed
correctly.
Use only print media
specified in the Selecting
Paper Types section on
page 31.
When printing in Epson LQ
mode, printing at 180 dpi in
HS mode may cause white
streaks. To remedy, select
the HQ mode with the
printer's operator panel.
The BJ cartridge may need
to be replaced. Replace it
with a new one.
Chapter 7