Canon GP405 Service Manual page 602

CHAPTER 14 TROUBLESHOOTING
<ADJ-XY>
Adjusting the Image Read Start Position
Level 3
ADJ-X Adjusts the image read start position (X
direction).
ADJ-Y Adjusts the CCD read start position (Y
direction).
ADJ-S Adjusts the position of collecting data for
shading correction from the standard white
plate.
(reverse)
14-184
Description
A higher setting shifts the read start
position in the direction of
scannerforward movement.
Index
(leading edge)
Copyboard glass
- +
A higher setting shifts the read start
position toward the front.
Index(rear)
Copyboard glass
- +
Point of measurement
Standard white plate
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Sub Scanning Direction
Unit: about 1 mm for each 12
Range: 0 to 1000
Main Scanning Direction
Unit: about 1 mm for each 12
Range: 0 to 400
CCD
Unit: 1 mm for each 12 (1 about
0.083 mm)
Range: 50 to 80
ADJUST
Remarks