Canon MultiPASS C530 Service Manual page 183

MultiPASS C530/C560 Chapter 3: Maintenance & Service
• Printing quality error (Evaluation criteria: Check the test print image's faults.)
• Print is not clear
(1) Paper has a correct side for printing.
would like it to be, try turning the paper over and printing on the other side.
• Blurred or smudged characters
(1) If the printed characters are blurred or smudged, make sure you are using the
recommended paper.
• Smudges appear on back of printed page
(1) If ink happens to get on the printer's platen, the back side of the printed page will
have smudge marks.
paper through the printer.
• Irregular print quality
(1) If white streaks appear on the printed page or dots are missing in the printed
output, clean the BJ head.
you follow these steps:
Press the Function button then press the Cleaning button and select HEAD CLEANING menu.
• Print head needs cleaning
(1) Paper dust or ink may get clogged in an ink nozzle in the BJ cartridge. Performing
the BJ head cleaning procedure should clear up this problem.
The printer automatically cleans the BJ head when you follow these steps:
Press the Function button then press the Cleaning button and select HEAD CLEANING menu.
• Horizontal white stripes appear on some entirely black parts of the print
(1) Carry out nozzle cleaning on the BJ cartridge five times with the cleaning operation,
then visually check the test print for non-discharge of ink from nozzles. ( Fig. 3-10 )
(2) Remove and reinstall the BJ cartridge.
(3) Replace the BJ cartridge.
(4) Check the connection of the carriage ribbon cable and the SPCNT board (J3).
(5) Replace the carriage ribbon cable.
(6) Replace the SPCNT board.
If this occurs, clean the platen by feeding a few sheets of
The printer automatically cleans the BJ head when
Missing dots
Unstable printing
Figure 3-10 Defective Pattern (Sample)
3-26
If the print quality is not as clear as you
Splashed dots