Adf; Outline; Preparing A Test Sheet For Adjustment; Adjusting The Mechanical System - Canon iR1020 Series Service Manual

Chapter 13

13.4 ADF

13.4.1 Outline

13.4.1.1 Outline
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F /
iR1024i / iR1024iF
This machine has the following adjustment items. Make the necessary ad-
justments after replacing each part.
No. Adjustment type
[1] Perpendicularity adjustment Hinge
[2] Magnification adjustment
[3] Side registration adjustment -
[4] Leading edge registration
adjustment

13.4.1.2 Preparing a Test Sheet for Adjustment

iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F /
iR1024i / iR1024iF
Preparing a Test Sheet: On a sheet of A4 or LTR paper, draw straight lines
as indicated:
<Using A4 Paper>
10mm
(feeding direction)
10mm
<Using LTR Paper>
10mm
(feeding direction)
10mm

13.4.2 Adjusting the Mechanical System

13.4.2.1 Adjusting the Perpendicularity

iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F /
iR1024i / iR1024iF
1) reate a test chart, load it in the ADF, and make a copy of it.
2) Compare the lines at the end of the test chart with those on the copy for
perpendicularity. Measure dimensions A and B at the end of the copy and
adjust the amount of skew (the range shown in the table) to within the
spec.
Dimension
(using A4)
A-B 0 +/- 1.5 mm
13-4
T-13-3
Replaced parts
Motor/roller
-
297mm
10mm
10mm
Draw straight lines.
F-13-7
279mm
10mm
10mm
Draw straight lines.
F-13-8
T-13-4
Dimension
(using LTR)
0 +/- 1.5 mm
(feeding direction)
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3) Loosen the two screws [1] securing the right hinge and slide the hinge ac-
cording to the sale markings so that the perpendicularity is within spec.
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4) Tighten the screws you loosened in step 3.

13.4.3 Adjusting the Ellectrical System

13.4.3.1 Adjusting the Magnification

iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F /
iR1024i / iR1024iF
1) Create a test chart, load it in the ADF, and make a copy of it. This copy is
0013-1276
called copy A.
2) Compare the longitudinal image length on the test chart with that on copy
A. If required, make an adjustment in the service mode.
(A4-size paper: 277 +/-1mm LTR paper: 59 +/-1mm)
Image on copy A is shorter. -> Increase the value (or reduce the stream read-
ing speed).
Image on copy A is longer. -> Decrease the value (or increase the stream
reading speed).
3) Enter the service mode.
Sequentially press the additional functions key, 2 key, 8 key, and additional
functions key on the operation panel of the host machine.
4) Using the arrow keys on the operation panel, display "#SCAN".
5) Press the OK key.
6) Using the arrow keys on the operation panel, display "#SCAN NUMER-
IC".
7) Press the OK key.
8) Using the arrow keys, select "48".
9) Using the numeric keys, change the value to determine the optimum value.
Next, press the OK key. (Default: 32)
A
Copy of the test sheet
B
F-13-9
[1]
F-13-10
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