Olivetti d-Copia 12 Service Manual page 46

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 pulley 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.
5-2
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"
x 8 1/2" paper with the document cover open.
Service Manual Y101700-5