Mechanical Adjustments - Pioneer CJ-V55 Service Manual

7. ADJUSTMENTS
• Adjustment of the stop position of menu rotation
[PREPARATIONS I
• Loosen the screw @ which holds the encoder disc
using a hexagomal wrench.
• Loosen screw ® which holds the adjustment plate.
• Adjust with the motor (menu) attached.
(1) Set the gap between the encoder disc and photo
interrupter of the motor (menu) to 1-S.G mm. (Fig.
7-2)
(2) Fix the screw of the encoder disc by tightening
with a hex wrench.
(3) Turn screw ® so that the carved mark on the
adjustment plate align with the underframe. Then
temporarily tighten screw @.
(4) Push the ROTATE MENU key on the front panel
of the main unit so that menu rotates. Then,
perform the following adjustments depending on
the condition. (Fig. 7-3)
•When the menu stops after extending past the front
.Loosen screw ®, then tighten screw ®
turning it clockwise.
• When menu stops before reaching the front
.Loosen screw ® and turn screw (g)
counterclockwise to loosen it.
(5) Turn the menu again and firmly tighten screw
® when the menu stops directing its surfaces
to the front (Fig. 7-4 ©)
(6) Finally, turn the menu and check that the menu
stops directing all of its three surfaces to the
front at every 120' rotation.
Fig. 7-1 Fig. 7-2 . Fig, 7-3
7.1 MECHANICAL ADJUSTMENTS
7.1.1 MAIN SECTION
• Three sides of the menu synchronous adjustment
(Fig. 7-1)
I PREPARATIONS]
• Adjust without installing the motor (menu).
• Fix center pulley to menu shaft with the screws.
(1) Apply synchro belt between synchro pulley and
center pulley both on the right and left sides.
(2) While applying spring (tension) to under frame and
tension plate, apply a tension to the synchro belt.
(3) Fix tension plate to under frame with screw®.
(4) By placing a flat plate such as a ruler on them,
align the three surfaces of the menu with each
other on the same level.
(5) Fix the menu shaft to the synchro pulley using
a hexagornal wrench.
(6) Remove the plate placed on the menu and check the
following items while turning the menu by hand.
1. Check that the three surfaces of the menu rotate
smoothly.
2. Check that all the three surfaces align with each
other on the same level after turning the menu
shaft once.
91