Canon Pixma Mp550 User Guide

For (B) (lines are missing or horizontal white streaks are  present) in (1)
 or  (2)
, or in both  (1) and 
(2):
(1) Select Also B and press the OK button.
Clean the Print Head. The cleaning confirmation screen  will appear.
(2) Select Yes and press the 
OK button.
The machine starts cleaning the Print Head. 
See 
Cleaning the Print Head.
 
     
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Page 101 of 877 pages
Examining the Nozzle Check Pattern
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Advanced GuideTroubleshooting
Contents > Routine Maintenance > W hen Printing Becomes Faint or Colors Are Incorrect >  Cleaning the Print Head
 Cleaning the Print Head 
Clean the Print Head if lines are missing or if hor izontal white streaks are present in the printed no zzle
check pattern. Cleaning unclogs the nozzles and res tores the print head condition. Cleaning the Print
Head consumes ink, so clean the Print Head only when nece ssary.
You need to prepare: a sheet of A4 or Letter-sized p lain...

See Cleaning the Print Head Deeply. 
     
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Page 103 of 877 pages
Cleaning the Print Head
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Advanced GuideTroubleshooting
Contents > Routine Maintenance > W hen Printing Becomes Faint or Colors Are Incorrect >  Cleaning the Print Head
Deeply
 Cleaning the Print Head Deeply 
If print quality does not improve by the standard c leaning of the Print Head, clean the Print Head dee ply.
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 p lain paper...

If the problem is still not resolved, the Print Head may be damaged. Contact the service center.
 Note
 Press the HOME button to exit the Settings menu and display the HOME
 screen.
      
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Page 105 of 877 pages
Cleaning the Print Head Deeply
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Advanced GuideTroubleshooting
Contents > Routine Maintenance > W hen Printing Becomes Faint or Colors Are Incorrect >  Aligning the Print Head
 Aligning the Print Head 
If printed ruled lines are misaligned or print results  are otherwise unsatisfactory, adjust the print head
position.
 Note
 If the remaining ink level is low, the print head alignment sheet will not be printed correctly. Replace
the ink tank whose ink is low.
See Replacing an Ink Tank.
 The print head alignment pattern is printed in...

 Important
 Do not touch any printed part on the print head alignment sheet.
 Be careful not to get the print head alignment sheet  dirty. If the sheet is stained or
wrinkled, it may not be scanned properly.
(5) W hen the message Did the patterns print correctly ? appears, confirm that the
pattern is printed correctly, select Yes, then pres s the 
OK button.
5.Scan the print head alignment sheet to adjust the prin
t head position.
(1) Load the print head alignment sheet on the Platen Glass.
Load the...

Glass.
 Important
 Do not open the Document Cover or remove the print head alignment sheet on the Platen
Glass until adjusting the print head position is complete d.
 If the massage Failed to scan. appears, press the OK button and confirm the following:
- The Platen Glass and print head alignment sheet are 
not dirty.
- The print head alignment sheet is placed in the corre ct position with the printed side
facing down.
Refer to 
Troubleshooting in the on-screen manual: Advanced Guide.
 Note
 Press the...

Advanced GuideTroubleshooting
Contents > Routine Maintenance > Cleaning the Paper Feed Roller
Cleaning the Paper Feed Roller 
If the Paper Feed Roller is dirty or paper powder is attached to it, paper may not be fed properly.
In this case, clean the Paper Feed Roller. Cleaning  will wear out the Paper Feed Roller, so perform this
only when necessary.
You need to prepare: three sheets of A4 or Letter-s ized plain paper
1.Make sure that the power is turned on.
2.Open the Paper Output Tray gently, and open...

The machine starts cleaning. 
The cleaning will be completed after the paper is ejected.
 Note
 Press the HOME button to exit the Settings menu and display the HOME
 screen. 
If the problem is not resolved after cleaning the Paper  Feed Roller, contact the service center.
 
     
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Page 110 of 877 pages
Cleaning the Paper Feed Roller
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