Dial Cord Stringing; D I A L C O R D S T R I N G I N G - Pioneer SX-3900 Service Manual

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7 . D I A L C O R D S T R I N G I N G
Remove the wooden cover and the front panel.
Turn the tuning capacitor shaft fully clockwise.
Fix the tuning drum to the tuning capacitor
shaft so that the set-screw is uppermost.
Tie one end of the dial cord to the spring.
Pass the cord through the cutout section in
the tuning drum. Wind it ll2 turn around the
tuning drum, and then take it over pulleys
A, B, C, D and E in that sequence.
Wind the cord around the tuning shaft 3 times.
Pass it over pully F, wind it around the tuning
drum 2 times, and finally tie it to the spring
so that it is tensioned.
T u n i n g c a p a c i t o r
E
\
D
D i a l p o i n t e r
7" Tum the tuning shaft and check that the cord
moves smoothly. Cut off any excess cord.
8. Tum the tuning shaft counter-clockwise as
far as it will go.
9. Align the dial pointer with the starting point of
the dial scale (third division from the left),
and then pass the cord over it.
10. Check that the dial pointer is in line with the
starting point of the dial scale.
11. Finally apply the locking paint to the knot of
the cord and the dial pointer connection.
12. If the tension of the cord is weak, move the
spring to the projection B.
S p r i n g
o .
T u n i n g d r u m
D i a l p o i n t e r c o n n e c t i o n
T u n i n g d r u m
B
T u n i n g s h a f t
1 A