AR-C262M (serv.man3). Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 124

AR-C262M  SETTING AND ADJUSTMENTS  8 - 17

6) With the scanner unit B in contact with the both stoppers on

the CCD mounting plate at the same time, fit the edge of the
scanner unit A with the frame right edge and fix the scanner
unit A with the screw.

1) Make a test chart on A3 (11" x 17") paper as shown below.

(Draw a rectangular with four right angles.)

2) Set the test chart made in procedure 1) on the document

table. (Leave a space of about 30mm between the reference
position and the test chart.) With the document cover open,
make a copy on A3 (11" x 17").

3) Check for distortion in the sub scanning direction.

If La = Lb, there is no distortion.

If there is some distortion in the sub scanning direction, perform
the following procedures.

4) Loosen either of two fixing screws of the scanner unit drive

pulley. (Either one on the front or the rear side will do.)

5) With the scanner unit drive shaft kept stationary, turn the scan-

ner unit drive pulley manually to change the parallelism of
scanner units A and B. (Change the relative positions of the
scanner unit drive pulley and the drive shaft.)

6) Tighten the scanner unit drive pulley fixing screw.

Repeat procedures 2) – 6) until the condition of procedure 3)
is satisfied.

If the distortion in the sub scanning direction cannot be deleted
with the above procedures, perform ADJ 6D, Scan image distor-
tion adjustment.

L

L

L

L

L = 10mm

Lb

La