Dial Cord Stringing; D I A L C O R D S T R I N G I N G - Pioneer SX-1280 Service Manual

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9 . D I A L C O R D S T R I N G I N G
Remove the bonnet cover, wooden cover and
front panel as described in the "Disassembly"
section on page 18.
Undo the 3 screws (E - @ to remove the blind
sash (Fig. 13).
Loosen screw @, and then remove the tuning
drum from the tuning capacitor shaft (Fig. 1 ).
Tie one end of the cord to the peg on the in-
side of the tuning drum (Fig. 14).
With the tuning capacitor blades turned full in,
rotate the tuning drum around the variable
capacitor shaft so that screw @ is positioned
at the apex (i.e. facing straight up).
Lead the cord out through the gap in the tun-
ing drum, make half a turn, and then pass the
cord over the pulleVs A, B, and C in that order.
Wind the cord 3 times around the tuning shaft
and pass it over pulley D; then make 2 wind-
ings around the tuning drum, and finally tie it
to the spring, making sure there is sufficient
tension in the cord (Figs. 15, 16).
7. Turn the tuning shaft to check that the drum
and cord move smoothly and easily, and then
cut off the remaining cord.
8. Turn the tuning shaft right back in the counter-
clockwise direction (so that the variable capaci-
tor blades are fully intermeshed).
9. Align the dial pointer with the starter point on
the dial scale, and secure it firmly to the cord
( F i g . 1 7 ) .
10. Finally apply the locking paint to the cord
securing positions (tuning drum projection and
spring) and the dial pointer connection.
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T u n i n g d r u m
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