AR-155 (serv.man10). AR150 155 ARF151 Service Manual-Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 3

5) Loosen the copy lamp unit/No.2/3 mirror unit drive pulley

setscrew in the side where No.2/3 mirror unit does not make
contact with No.2/3 mirror unit positioning plate. 

6) Without moving the copy lamp unit/No.2/3 mirror unit drive pul-

ley shaft, manually turn the copy lamp unit/No.2/3 mirror unit
drive pulley in the same direction of the loosened setscrew.
When it makes contact with No.2/3 mirror unit positioning plate,
tighten and fix the setscrew.

7) Manually turn the copy lamp unit/No.2/3 mirror unit drive gear to

bring No.2/3 mirror unit into contact with the positioning plate,
and perform the procedure of step 4).
Repeat procedures of steps 4) to 7) until the parallelism of
No.2/3 mirror unit is properly set.

8) With No.2/3 mirror unit positioning plate in contact with No.2/3

mirror unit, bring the copy lamp unit into contact with the right
frame and fix the copy lamp unit to the drive wire.
Procedures 1) to 8) are for adjustment of mechanical horizontal
parallelism. The copy lamp unit and No.2/3 mirror are fixed to
the specified positions and the mechanical horizontal parallelism
of No.2/3 mirror is adjusted.
Then the optical horizontal parallelism must be adjusted in the
following procedures. 

9) Set the image distortion check chart on the document table, and

make a reduction copy (75%) on an A4 or 11

″  × 8 1/2″ paper

with the document cover open. 

Set screw

Scanner unit drive pulley

Copy lamp unit projection

50mm

Image distortion check chart

AR-F151

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