Canon S400 User Manual page 257

When you finish entering numbers, click the Send button to save the
7
settings.
Make sure that the printer is turned on and plain paper is loaded; then click
8
the OK button. The printer starts to print the high-resolution head alignment
pattern.
Check all the patterns in lines (B1) and (B2).
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For each line enter the appropriate number where you see the lines
perfectly aligned.
When you finish entering numbers, click the Send button.
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Note To turn off the printer after automatic head alignment, always press the
POWER button. If you do not turn off the printer correctly with the POWER
button, the print head alignment settings are not saved.
Correct:
Incorrect:
Using the Macintosh Printer Driver
Printer Maintenance
257