MX-M850 (serv.man36). Section 6 Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 13

MX-M1100  ADJUSTMENTS  6 – 13

 

This adjustment is needed in the following situations:
* The scanner (reading) section has been disassembled.
* When a distortion is produced in copy and scan images.

 

Before execution of this procedure, remove the document table
glass.
1)

Loosen the screw which is fixing the scanner unit A and the
drive wire, and remove the scanner unit A from the drive wire.

2)

Manually turn the scanner drive pulley, to move the scanner
unit B until it is in contact with the stopper. 
If the scanner unit B is in contact with the stoppers at the front
and the rear frames simultaneously, the parallelism of the
scanner unit B is proper. 

If this requirement is not met, do the following steps.

3)

Loosen the fixing screw of the pulley angle on the front frame
side of the scanner unit B. 

4)

Adjust the pulley angle position on the front frame side of the
scanner unit B so that the scanner unit B is in contact with the
stoppers on the front and the rear frames of the scanner unit B
simultaneously. 

5)

Fix the pulley angle on the front frame side of the scanner unit
B. 
If the adjustment result is unsatisfactory, perform the following
procedure.
Loosen the fixing screws of the scanner unit drive pulley on the
side of of the mirror assembly that does not contact the stop-
per.
Adjust so that the scanner unit B is in contact with the stoppers
on the front and the rear frames simultaneously when the
scanner unit drive pulley is manually turned without moving the
scanner unit drive shaft. (Change the relative position of the
scanner unit drive pulley and the drive shaft.) Fix the fixing
screws of the scanner unit drive pulley. 

6)

With the scanner unit B in contact with the stoppers simulta-
neously, fit the edge of the scanner unit A and the right edge of
the frame (top of the Mylar), and secure the scanner unit A
with the screw.