Canon printer PIXMA MG7720 User Manual

							Examining the Nozzle Check PatternExamine the nozzle check pattern, and clean the print head if necessary.1.
Check if there are missing lines in the pattern C or horizontal white streaks in the pattern D.
A: No missing lines/No horizontal white streaks
B: Lines are missing/Horizontal white streaks are present E: Number of sheets printed so far
2.
Select the pattern that is closer to the printed nozzle check pattern on the confirmation
screen.
 
For A (no missing lines or no horizontal white streaks) in both the pattern C and pattern D:
The cleaning is not required. Tap  All A, confirm the message, then tap  OK.
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							The screen will return to the Maintenance screen.
For B (lines are missing or horizontal white streaks are present) in the pattern C or pattern D, or in both patterns:
The cleaning is required. Tap  Also B, then tap  Yes on the cleaning confirmation screen.
The machine starts cleaning the print head.
Cleaning the Print Head
Note

						

							Cleaning the Print HeadClean the print head if lines are missing or if horizontal white streaks are present in the printed nozzle checkpattern. Cleaning unclogs the nozzles and restores the print head condition. Cleaning the print head
consumes ink, so clean the print head only when necessary.
You need to prepare: a sheet of A4 or Letter-sized plain paper1.
Make sure that the power is turned on.
2.
Load a sheet of A4 or Letter-sized plain paper in the cassette 2.
After inserting the cassette into the machine, the paper information registration screen is displayed on
the touch screen. Select  A4 or  Letter  for Page size  and Plain paper  for Type , then tap  Register.
If a message is displayed on the screen, follow the directions in the message to complete registration.
3.
Holding both sides of the paper output tray, gently open it.
The output tray extension will open automatically when the paper output tray is opened.
4.
Extend the paper output support.
Important

						

							The confirmation screen will appear.
8.
Tap Yes.
The machine starts cleaning the print head.
Do not perform any other operations until the machine completes the cleaning of the print head. This
takes about 2 to 3 minutes.
The pattern print confirmation screen will appear.
9.
Tap  Yes.
The nozzle check pattern will be printed.
10.
Examine the nozzle check pattern .
Note

						

							Cleaning the Print Head DeeplyIf print quality does not improve by the standard cleaning of the print head, clean the print head deeply.
Cleaning the print head deeply consumes more ink than the standard cleaning of the print head, so clean the print head deeply only when necessary.
You need to prepare: a sheet of A4 or Letter-sized plain paper1.
Make sure that the power is turned on.
2.
Load a sheet of A4 or Letter-sized plain paper in the cassette 2.
After inserting the cassette into the machine, the paper information registration screen is displayed on
the touch screen. Select  A4 or  Letter  for Page size  and Plain paper  for Type , then tap  Register.
If a message is displayed on the screen, follow the directions in the message to complete registration.
3.
Holding both sides of the paper output tray, gently open it.
The output tray extension will open automatically when the paper output tray is opened.
4.
Extend the paper output support.
Important

						

							The confirmation screen will appear.
8.
Tap Yes.
The machine starts cleaning the print head deeply.
Do not perform any other operations until the machine completes the deep cleaning of the print head.
This takes about 2 to 3 minutes.
The pattern print confirmation screen will appear.
9.
Tap  Yes.
The nozzle check pattern will be printed.
10.
When the completion message appears, tap  OK.
11.
Examine the nozzle check pattern .
If a particular color is not printed properly, 
replace the ink tank  of that color.
If the problem is not resolved, turn off the power and clean the print head deeply again after 24 hours.
If the problem is still not resolved, the print head may be damaged. Contact the service center.
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							Aligning the Print HeadIf printed ruled lines are misaligned or print results are otherwise unsatisfactory, adjust the print head
position.
Note

						

							7.Tap Auto head alignment .
The confirmation screen will appear.
8.
Tap Yes.
The print head alignment sheet will be printed and the print head position will be adjusted automatically.
This takes about 3 to 4 minutes.
Important

						

							Aligning the Print Head ManuallyIf printed ruled lines are misaligned or print results are still not satisfactory after adjusting the print headposition automatically, adjust the print head position manually.
Note

						

							The confirmation screen will appear.
Note