Canon iR C2880 Series Service Manual page 131

Loosen the fixing nut [2] before adjustment. Tighten it after adjustment.
* When the front side is fixed incompletely -> Rotate the adjustment screw
clockwise, set the front side to the glass.
* When the rear side or both sides are fixed incompletely -> Rotate the ad-
justment screw counterclockwise, set the rear side to the glass.
[2]
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1-4. Right Hinge Height Adjustment
1) When closing DADF, check the following two matters.
- The rubber foot [1] is not attached to the cover of the reader unit (There is
gap A).
- The document retaining sheet [2] is attached to the copyboard glass.
[1]
[2]
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2) If the height is not correct, adjust it with right hinge height adjustment
screw [1].
Loosen the fixing nut [2] before adjustment. Tighten it after adjustment.
* Rotate the adjustment screw clockwise => Gap A becomes wider
* Rotate the adjustment screw counterclockwise => Gap A becomes narrow-
er
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3) Perform the step 1) 'Left Hinge Height Adjustment'. If there is any dis-
placement, perform adjustment again.
2. Main Unit Power ON
1) Connect the power supply cable to the power plug.
2) Turn ON the main power switch.
3. Tray Width Adjustment
[1]
The result of this adjustment is stored in the reader controller PCB. When
installing DADF in the field, this adjustment should be performed to input
the adjustment result in the reader unit. For DADF, this adjustment is not
performed in installing in the field. If this adjustment is not performed, the
following problem occurs.
- Wrong detection of the document size
For the tray width adjustment, perform 'AB system adjustment' or 'INCH
system adjustment'.
<AB System Adjustment>
1) Select the screen from the service mode screen in the following order, to
display the adjustment screen.
FEEDER > FUNCTION > TRY-A4 (highlighted)
2) Align the tray side guide against the 'A4/A3' indication.
3) Press OK key, register the width of 'A4'.
4) Press TRY-A5R (highlighted).
5) Align the tray side guide against the 'A5R' indication.
6) Press OK key, register the width of 'A5R'.
7) Press the reset key twice to release the service mode.
<INCH System Adjustment>
1) Select the screen from the service mode screen in the following order, to
display the adjustment screen.
FEEDER > FUNCTION > TRY-LTR (highlighted)
2) Align the tray side guide against the 'LTR/11X17' indication.
3) Press OK key, register the width of LTR.
4) Press TRY-LTRR key (highlighted).
5) Align the tray side guide against the 'STMT/LTRR/LGL' indication.
6) Press OK key, register the width of LTRR.
7) Press the reset key twice to release the service mode.
4. Right-Angle Adjustment
Here, the original feed direction of this equipment is adjusted in relation to
the optical system of the host machine.
1) Prepare a test chart as shown using A4 or LTR copy paper.
10mm
Right angle
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2) It can be used by copying or cutting.
3) Check the right angle of the image at the edge of the copied paper. Check
the right angle by reading the difference between A and B dimensions at
the edge of the copy. If there is a difference between A and B, perform
adjustment from the step.
Chapter 2
10mm
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