Sharp GF-320A

CIRCUIT ADJUSTMENT (AUDIO SECTION)
SETTING
. Volume control. Maximum
POSITION
l Graphic equalrzer control: Center
OF SWITCH
l Balance control. Center
AND KNOB
l Function selector switch: Tape
ITEM INPUT
ADJUST-
MENT
REMARKS (CHECK)
POINT
PLAY BACK
Test tape
(1.2 V *3 dB)
AMPLIFIER
MTT-118 __
SENSITIVITY
ITEM
JIG
Driving
power - z&fjq
Torque Torque meter
Play TW-2111
Fast-forward
TW-223 1
Rewind
TW-223 1
Azimuth
Tape
speed
1 ADJUSTMENT
POINTS
I
Test Tape
MTT-113C
Azimuth
adjusting screw
External
Oscilloscope
Test Tape
MTT-118
Head
Figure 8- 1 PLAYBACK AMPLIFIER SENSITIVITY
MECHANICAL ADJUSTMENT
Ruba3Ks (CHECK)
(More than 140 g)
(Play:
30 - 60 g-m)
(Fast-forward:
55 - IlOgcm)
(Rewind:
55- 1lOgcm)
Sine waveform
attains the
maximum.
3,000 *90 Hz
Test 1
MTT-1
E.V: ELECTRONIC VOLTMETER
Dual-trace
External
Svncroscope
‘ape
13C
Head
Figure 8-2 AZIMUTH
External
Speaker
Test Tape
MTT-111
, Record/Playback
Head
Figure 8- 3 TAPE SPEED
-8-