Canon imageRUNNER ADVANCE 4551i Service Manual page 321

4. Check that the trailing edge of the image on the Print 2 is within the standard range.
Standard range: A </= 1 mm
< If the image of print 2 is longer >
5. If it is not within the standard range, make an adjustment with the following service mode
• FEEDER > ADJUST > LA-SPEED
If the image on the Print 2 is longer: Make the numeric value larger (by making the stream reading of the original "faster").
If the image on the Print 2 is shorter: Make the numeric value smaller (by making the stream reading of the original
"slower").
• Amount of change per increment: 0.1%
• Adjustment range: -30 to +30
6. Print the test chart again, and check that the image is within the ranges of the standard.
● Adjustment of the Paper Back Reading
1. Place a test chart on the Copyboard Glass of the connected equipment and print. This is called Print 1.
2. Place a test chart facing down on the Document Pickup Tray and perform 2-sided print. This is called Print 2.
3. Overlay the Print 2 onto the Print 1.
4. Check that the trailing edge of the image on the Print 2 is within the standard range.
Standard range: A </= 1 mm
< If the image of print 2 is longer >
Trailing edge of
print 1
Trailing edge of
A
Feed direction
Trailing edge of
print 1
Trailing edge of
A
Feed direction
< If the image of print 2 is shorter >
Trailing edge of
print 2
print 2
Feed direction
< If the image of print 2 is shorter >
Trailing edge of
print 2
print 2
Feed direction
308
Trailing edge of
print 1
A
Trailing edge of
print 1
A
5. Adjustment