Canon MP800 manual When enlarged in the carriage movement direction

Carriage movement problems (contact to	- Confirm that the carriage timing slit strip film is free from
other parts, strange noise)	damage or grease.
	- Clean the carriage timing slit strip film (with ethanol and
	lint-free paper).
	- Replace the
	- carriage timing slit strip film, or
	- carriage unit.
Faulty scanning (no scanning, strange	- Confirm the connection between the scanner unit and the
noise)	logic board.
	- Replace the
	- scanner unit, or
	- logic board ass'y.
The FAU lamp does not light.	- Confirm the connection between the scanner unit, FAU,
	and the logic board.
	- Replace the
	- document pressure plate unit (FAU), or
	- logic board ass'y.
Unsatisfactory print quality No printing, or no color ejected.	- Replace the
	- ink tank,
	- print head*1, or
	- logic board ass'y.
	- Remove foreign material from the purge unit caps, if any.
	- Replace the purge unit.
Printing is faint, or white lines appear on	- Remove and re-install the print head.
printouts even after print head cleaning.	- Replace the
Line(s) not included in the print data
	- ink tank,
appears on printouts.
	- print head*1,
	- purge unit, or
	- logic board ass'y.
Paper gets smeared.	- Feed several sheets of paper.
	- Perform bottom plate cleaning.
	- Clean the paper path with cotton swab or cloth.
	- Clean the ASF sub-rollers.
A part of a line is missing on printouts.	- Replace the
	- ink tank, or
	- print head*1.
Color hue is incorrect.	- Replace the
	- ink tank, or
	- print head*1.
	- Perform print head alignment.
Printing is incorrect.	Replace the logic board ass'y.
No ejection of black ink.	- Replace the
	- ink tank, or
	- print head*1.
	- Remove foreign material from the purge unit caps, if any.
	- Replace the purge unit.
Graphic or text is enlarged on printouts.	When enlarged in the carriage movement direction:
	- Clean grease or oil off the timing slit strip film
	- Replace the
	- timing slit strip film,
	- carriage unit, or
	- logic board ass'y.

1-11