Canon printer PIXMA MG6821 User Manual

Checking the Ink Status with the Touch Screen on the Machine1.
Make sure that the power is turned on, and display the HOME screen.
If the HOME screen is not displayed, press the  HOME button to display it.
2.
Flick the HOME screen, then tap  Setup .
Using the Operation Panel
The setup menu screen will appear.
3.
Tap   Estimated ink levels .
A symbol appears in the area A if there is any information about the remaining ink level.
Example: 
The ink is running low. Prepare a new ink tank.
The resulting...

Checking the Ink Status with the Ink Lamps1.
Make sure that the power is turned on.
2.
Open the front cover, then open the paper output tray.
3.
Lift the operation panel and open until it stops.
Replacing Procedure
4.
Check the ink lamp.Close the operation panel after checking the ink lamp status.
Replacing Procedure

removed from the bottom of the ink tank, then press on the top of the ink tank until the ink tankclicks into place.
If the ink lamp is still off after reinstalling the ink tank, there has been an error and the machine cannot print. Check the error message displayed on the touch screen.
Message Appears
Note

Maintenance
If Printing Is Faint or Uneven
Performing Maintenance Functions from Your Computer (Windows)
Performing Maintenance Functions from Your Computer (Mac OS)
Cleaning
194 

If Printing Is Faint or Uneven
Maintenance Procedure
Printing the Nozzle Check Pattern
Examining the Nozzle Check Pattern
Cleaning the Print Head
Cleaning the Print Head Deeply
Aligning the Print Head
195 

Maintenance ProcedureIf print results are blurred, colors are not printed correctly, or print results are unsatisfactory (e.g. misalignedprinted ruled lines), perform the maintenance procedure below.
Important

From the computer
Cleaning the Print Heads (Windows)
Cleaning the Print Heads (Mac OS)
After cleaning the print head, print and examine the nozzle check pattern: 
 Step1
If the problem is not resolved after performing from step 1 to step 3 twice:
Step4  Clean the print head deeply.
From the machine
Cleaning the Print Head Deeply
From the computer
Cleaning the Print Heads  (Windows)
Cleaning the Print Heads (Mac OS)
Note

Printing the Nozzle Check PatternPrint the nozzle check pattern to determine whether the ink ejects properly from the print head nozzle.
Note

The confirmation screen will appear.
7.
Tap Yes.
The nozzle check pattern will be printed and two pattern confirmation screens will appear on the touch screen.
8.
Examine the nozzle check pattern .
199 

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...