Sharp RP-117H - Phono Motor Rotational Speed Adjustment; APSS Sensor Sensitivity Adjustment

RP-107H/117H
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PHONO MOTOR ROTATIONAL SPEED ADJUSTYMENT
1. Prepare an LP record which is provided with strobo viewer,
and load it in the unit. Then place the unit in cue-up mode
and close the turntable chassis: at the time, the phono
motor is kept in rotation.
2. Adjust the semi-variable resistor VR202 or VR201 so that
the strobo viewer appears to be still.
® VR202: at 33 r.p.m. speed
® VR201: at 45 r.p.m. speed (set by the speed selector
(33/45) key)
APSS SENSOR SENSITIVITY ADJUSTMENT
1. Make a connection of instruments as shown in Fig. 42-1
and load the unit with a test record (TOSHIBA: LF-1003)
or an ordinary LP record (as clean as possible) having a
wide lead-out area.
2. Pushing the cartridge forward key, move the tonearm to the
lead-out position and keep the unit in cue-up mode.
3. Adjust the variable resistor VR203 (for side A) and/or
VR204 (for side B) so that the electronic voltmeter reads
35mV +1mvV.
—~42—
Electronic
voltmeter
Side A/B Selector
Switch
TP201
B: Side B Adjustment A: Side A Adjustment
Figure 42-1
APSS Sensor
Sensitivity
a _
ul VR203 Adjustment
aivr2zo4 Side A
u Side B
ei
vR205
Tracking
a
Sensor
£1
VR206
Sensitivity
Adjustment
Speed
F Adjustment
cl VR2O1 45 rpm
cit VR202 Speed
Adjustment
33 rpm
Figure 42-2