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CHAPTER 5 TROUBLESHOOTING
Hl
5. Compensation of the Margins
Carry out this adjustment after the engine con-
troller PCB has been replaced.
This adjustment compensates three margins:
leading edge margin, left margin and trailing edge
margin.
Adjusting the leading edge margin compen-
sates for unevenness of the media discharge sen-
sor installation position. Adjusting the left margin
compensates for unevenness of the distance be-
tween the cartridge and media sensor. Adjusting
the trailing edge margin compensates for uneven-
ness of the Y cutter installation position.
CAUTION
The left margin is the margin on the left of
the image, and is the margin on the right
(carriage side) of the machine.
1) Set the printer to the service mode, and select
"Margin Adjust."
(Refer to page 5-43 about Service Mode
descrivibing below)
Margin
Adjust
No
2) Select "Yes" and press the down arrow key.
Margin
Adj
[Load
Cut
[Load Cut Sheet Media]
ust
Sheet
3)
Insert A3/11"x17" size or larger size cut sheet
media into the printer.
* The printer outputs the margin adjustment
pattern, and cuts the media.
¢ The screen for selecting the leading edge
margin is displayed.
COPYRIGHT © 1998 CANON INC.
4)
Measures the lengths of the leading edge, left
and trailing edge margins from the output.
Leading edge margin
Left
edge
margin
Trailing edge margin
Figure 5-225
5) Press the left or right key to select the length of
the measured leading edge margin.
Reference
The variable width is 0.1 mm/0.01°.
6)
Press the down arrow key.
* The screen for selecting the left margin is
displayed.
Input
Left
Mrgin
10.
Omm
Oo.
39In.
7) Press the left or right key to select the length of
the measured left margin.
8)
Press the down arrow key.
* The screen for selecting the trailing edge
margin is displayed.
ut
Bttm
Mrgin
0.
39I1n
9)
Press the left or right key to select the length of
the measured trailing edge margin.
10) Press the down arrow key.
¢ The printer determines the compensation
value from the selected margin lengths.
¢ The printer displays the "Input Room Temp."
menu screen.
5-11
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