Scanning System; Preparing A Test Sheet For Adjustment - Canon iR1200 Series Service Manual

12.2 Scanning System

12.2.1 Preparing a Test
Sheet for Adjustment
You will need to prepare a test sheet as follows for
adjustments (except contact sensor LED intensity auto
adjustment); refer to fllowing illustrations for the
specifics:
Preparing a Test Sheet: On a sheet of A4 or LTR
paper, draw straight lines as indicated:
<Using A4 Paper>
10mm
(feeding direction)
10mm
F-12-3
<Using LTR Paper>
10mm
(feeding direction)
10mm
F-12-4
12.2.2 Contact Sensor LED
Intensity
Adjustment
Before starting adjustment, verify that there is nothing
on the copyboard glass. Also verify that the ADF
(copyboard cover) is securely closed.
Execute auto adjustment of the contact sensor LED
0006-3145
297m
10mm
10mm
Draw straight lines.
279m
10mm
10mm
Draw straight lines.
Auto
0006-3152
intensity as follows:
1) Press the Additional Functions key and the # key to
start service mode.
2) Press the Left/Right Arrow key so that 'TEST
MODE' is indicated.
3) Press the OK key.
4) Press '2' on the keypad so that 'TEST MODE' is
indicated.
5) Press '7' on the keypad to clear the CCD parameter.
6) Press the Stop key to return to 'TEST MODE'.
7) Press '2' on the keypad so that '2: CCD TEST' is
indicated.
8) Press '8' on the keypad so that the machine starts
contact sensor LED intensity auto adjustment.
9) End the work when the LCD indicates 'OK'; if it
indicates 'NG', on the other hand, start over.
10) Press the Stop key and the Additional Functions
key (to end TEST MODE).
Chapter 12
12-3