Adj-Xy (Image Read Start Position Adjustment) - Canon 1000 Service Manual

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

1. ADJ-XY (image read start position adjustment)

DISP COUNTER
ADJUST
FUNC
OPTION
TEST
Item
ADJ-X Use it to make adjustments so that the image read start
(Note 1) position (X direction, sub scanning direction) matches
the reference point on the copyboard glass.
Fine-adjusts the distance from the original scanner
home position sensor to the read start position.
• Unit:
• Follow the instructions on the next page.
ADJ-Y Use it to make adjustments so that the image read start
(Note 1) position (Y direction, main scanning direction) matches
the reference point on the copyboard glass.
• Unit:
• Follow the instructions on the next page.
ADJ-S Use it to fine-adjust the point at which the standard
(Note 1) white plate is measured for shading correction data.
• Unit:
• Scratches or dirt, if any, on the standard white plate
ADJ-J Adjusts the preparatory time for the scanner motor.
(Note 1)
Note 1:
You must enter the appropriate value whenever you have replaced a PCB or initialized a RAM; record
any new values on the service label for this purpose.
7-226
COPYRIGHT © 2001 CANON INC.
<M> <S>
ADJ-XY
ADJ-X
xxxx
ADJ-Y
xxxx
ADJ-S
xxxx
ADJ-J
xxxx
Description
Number of steps of the stepping motor.
Pixel
Number of steps of the stepping motor.
can cause conspicuous vertical white lines on
copies. If such is noted, shift the point of measure-
ment using 'ADJ-S'.
+
(forward)
Point of measurement
Standard white plate
<R>
READY
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
<P> <F>
READY
Remarks
Settings: –100~+100
(–3.9~+3.9mm)
Unit= 0.11 mm (approx.)
Settings: –100~+100
(–2.5~+2.5mm)
Unit= 0.06mm (approx.)
Settings: 0~45
(0~4.8mm)
Unit= 0.11mm (approx.)
Settings: 450~550
Unit= 0.1msec (approx.)