Sharp GF-A2Z(S) User Manual

MECHANICAL ADJUSTMENT
l For the details of the test tapes used for the measurement,
refer to the Table “TEST TAPES FOR MEASUREMENT”. E.V.: Electronic Voltmeter
ITEM JIG
ADJUSTMENT
POINTS
REMARKS
(CHECK)
Pinch
roller
pressure
Tension gauge Pinch roller 370 * 6Og
(500 9)
pressure spring * If the reading
is outside the
range, replace the
pressure spring of
the pinch roller.
Driving
power
Tape tention
measuring
cassette
TW-2412
(More than 150 g1
Torque Torque meter
Play TW-2111
Fast-forward
TW-2231
Rewind
l-W-2231
(Play:35 - 60 g-cm
(Fast-fo~lard:
70 - 120 g-cm)
(Rewind:
70 - 120 g-cm)
Azimuth
Tape
speed
Test tape
M-f-r-1 13C
Test tape
Ml-T-1 11
Azimuth Sine waveform
adjusting attains the
screw
maximum.
Variable resistor
3,000 f 90 Hz
on motor
r
Test Tape
MTT- 113C
o 3.2 ohmsx2
, Record/Playback
Head
Ext. Speaker
Terminal
1%ch)
Test Tape
MTT-111
Figure 5-l AZIMUTH
Ext. Speaker
I
Playback Terminal
Mode
Frequency Counrer
Unit
GND
/
Figure 5-2 TAPE SPEED
CIRCUIT ADJUSTMENT (AUDIO SECTION)
COMPACT CASSETTE TYPE
DISTORTION
DOLBY LEVEL MTT-150
CALIBRATION
i
FREQUENCY/
APPLICATION
MODEL MEASUREMENT
APPLICATION
LEVEL
RANGE
3 kHz, -10 dB
Tape speed,
Wow and flutter
check
TW-2111
lo- 1OOgcm
Normal : Playback torque
1 1.5-1Ogcm 1
Normal : Back tension
I
6.3 kHz, -10 dB
Head azimuth
8 kHz, -10 dB adjustment
lOkHz,-1OdB
TW-2121 1 lo-1OOgcm
Reverse : Playback torque
I
1 kHz, -10 dB
Distortion chech
level adjustment
TW-2231
1.5 - log-cm
30 - 200 g-cm
Reverse : Back tension
Fast-forward, Rewind torque
Dolby B-Type
Dolby NR
Tone 200 nwblm
B-type level
adjustment
TW-2412 j 0-300g
Normal : Driving power
I
TW-2422 1 0 - 3009
Reverse : Driving power
I
Record fre-
quency check
SETTING
POSITION
OF WITCH
AND KNOB
ITEM
l Volume control: Maximum
l Balance control: Center
*Graphic equalizer control: Center
l Function selector switch: Tape
ADJUST-
INPUT
MENT
REMARKS (CHECK)
POINT
Dscilloscop
Test Tape
MTT-118
Head
PLAY BACK Test tape
AMPLIFIER MTT-118 -
(0.85 - 1.7V)
Figure 5-3 PLAYBACK AMPLIFIER SENSITIVITY
SENSITIVITY
TEST TAPES FOR MEASUREMENT
TORQUE METER FOR COMPACT CASSETTE
I
-5-

Sharp GF-A2Z(S) Specifications

General

Brand	Sharp
Model	GF-A2Z(S)
Category	Stereo System
Language	English