Konica Minolta 7020 Service Manual page 121

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(2) On the metal ball side, pass the optics wire so that
it passes under the V mirror unit, through the left
side pulley, and through the inside pulley on the V
mirror unit. Hook the end of the wire onto the cutout
on the frame.
(3) Pass the wire on the round-end side through the
4
right side pulley. Then, pass the wire over the
pulley on the outside of the V mirror unit, pass it
under the V mirror unit, and fix it with spring shaft of
the right side frame. Subsequently, hook the
spring, pull the spring shift in the arrow direction,
and check whether the tension of the nut departing
from the read section is kept in 0.5 - 0.8 kg. If the
tension is not kept in 0.5 - 0.8 kg, be sure to adjust
the nut.
(4) Fasten the drive pulley bearings into place with the
attachment screws (2 screws each).
(5) Using the optics positioning jigs to install the
exposure unit.
(6) Remove the jigs.
(7) Slide the exposure unit two or three times to make
sure that it works correctly.
Metal ball
To metal
ball
Pulley
Nut
Nut
Pulley
V mirror unit
To metal
ball
Spring shaft Spring
V mirror unit
Optics positioning jigs
a. Procedure (New Type: Without a spring)
(1) Fit the metal ball (midway along each optics wire)
into the mount opening on the drive pulley. Starting
from this position, wind 6 times around the outside
and 5 times around the inside.
• After winding the wires, fasten them in place (with
tape, etc.) so that they cannot come off.
• Use the "F" exposure unit mount fitting (the fitting
with the "F" printed on it) at the front, and use the
"R" fitting at the rear.
• The end with the metal ball at the tip winds around
the inside of the pulley shaft.
• Wind so that the two ends of the wire come off the
top of the pulley.
(Rear)
Tape
3-C-7
READ SECTION
6 winds
5 winds
Rear
Tape
Drive
pulleys
(Front)
6 winds 5 winds
Front