Sony HMK-70 - Page 6

HMK-70
2-3. DIAL CORD STRINGING
—- 1600mm (63”)
pulley D
“ QF
0.5mm (%a") dia dial pointer
A
x
pulley C &
fo}
© tuning
drum
a,
Turn the tuning drum fully clockwise
(maximum capacitance position). tuning drum
three clockwise turns
starting
oint
-
:
starting
finish
point
tuning drum point
tension
spring tuning
drum
Squeeze
the eyelet.
i
finish
tuning drum
Fig. 2-3. Dial cord stringing
2-4. MECHANICAL DIAL CALIBRATION
0 finish
—
12)
Set the dial pointer at 530 kHz (MW) on the scale.
FM 88
MW 530
LW. 150
|
dial pointer
Turn the tuning drum fully clockwise
(maximum capacitance position).
4)
Apply a drop of contact cement to the
contact portion of the pointer and
string.
Readjust the position of the dial pointer
by utilizing off-the-air local signals.
Fig. 2-4. | Mechanical dial calibration