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Adjustment Instructions for STS-1 hifi
tem | check | Adjustment
[Reterencevatue
[Note
Synchronism
Regulator VR 1, VR 2 and VR 3 of the
= 0,035 % (most propitions value, the
Use the measuring instrument for
(D.D-Motor)
motor control board
test record must be centralized)
Treble CUT Complying with DIN 45507
and the synchronism-test record Com-
plying with DN 45545
@ For the adjustment loose the fixing
screw (hegonal), (fig. 1-C)
Automatic
@ Basic adjustment for the switch
The PU-arm microswitch must be
return of the
lever
switched, if the PU-arm is situased, on
PU-arm
the support
@ Exentric Pin for return of the tone-
Turning clockwise: the switching off
@ Use the record TPP 3345, reference
arm (fig. 1-A)
takes place eartier
number 339 280035
Turning anti clockwise: the switching
off takes place earlier
VR 1 (on the control electronic board
PCB No 87 2284)
Plug-pins 9-10: 0,2 V
VR 2 (on the control electronic board
PCB No 87 2284)
Piug-pins 9-11: 0,73 V
Push the button for speed "45"
Optic-
Adjustment of the operating point for
i
Please check the Item 2
electronic
the optic-coupling. The tone-arm is
Switching off
situated on the support
Automatic
Adjustment of the touch-down point
Turning clockwise: Touch-down. Point
Use the test record TPP 3345
touch-down of
with the excentric pin (fig. 1-B)
displaces outwards.
(reference number 339 280035)
the PU-arm
Turning anti clockwise: Touch-down.
Point displaces inwards (to the record
centrat point)
Lift-Height
Adjustment of the E.L. nut (fig. 2-A)
The stylus of the PU-head system
must be lifted up 4-7 mm over the
record at operated lift.
Turning clockwise:
Lift-Height becomes smaller
Turning anti clockwise:
Lift-Height becomes bigger
For "33": 44.44 Hz
(respectively 22500 + 2 js)
For "45": 60 Hz
(respectively 16666 + 2 us)
Connect the universal frequency
counter (+) terminal to No 24 PIN
and (—) terminal to No 1 PIN of the
motor controlboard.
Push the buttons for speed.
Adjustment
Adjustment of the trimmer capacitor
of the speed
VC 1
(PLL-
Adjustment of the phase-linked
"45" rpm:
Watch the stroboscope (no measuring
Phase-Locked- | oscillator for "33" and "45" rom
1. Turn VR 5 (on the motor contro!
instruments are necessary), Quartz-
Loop)-
board) fully anticlockwise.
button is pushed.
switching
2. The turn the VR 5 clockwise slowly
and adjust to the correct position.
Then slide the stripe from the moun-
tain to the botton by one frame c.w.
"33" rpm:
Adjust VR 4 which are located neigh-
bour toward front side which is for
"33" rpm in the same manner as that
of "45" rpm.
1. Turn VR 4 (on the motor control
board) fully clockwise (see "45" rpm)
Connect (+) terminal of channel 1 to
No 24 PIN and (—) terminal No 1 PIN.
The (+) terminal of channel 2 to TP
Pin and (—) terminal to No 1 Pin.
"45" rpm: Adjust VR 5 like in fig. 3
"33° fpm: Adjust VR 4 like in fig. 3
Use 2-channel oscilloscop.
Lift bank
Elevation
Plate
Bank pour
Lift
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