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a2 eee
Mode
Counter
ap
x
pee
1
MECHANICAL ADJUSTMENT
REMARKS
(CHECK)
(More than 120 g)
E.V: ELECTRONIC VOLTMETER
Dual-Trace
Syncroscope
E.V.
Playback
oe
2
eal
@
Test Tape
MTT-113C
Torque meter
Play TW-2111
Fast-forward
(Play: 30 — 60 g-cm)
(Fast-forward:
Figure 8—1
AZIMUTH
Test tape
Azimuth
Sine waveform
MTT-113C
adjusting screw
| attains the
maximum.
*
For the
high
speed
adjustment
of Deck
2, adjust VR704
to pro-
vide the same playback speed as in Deck 1.
TP2: Mechanism chassis (GND)
Figure 8-3 TEST POINTS AND ADJUSTMENT POINTS
TEST TAPES FOR MEASUREMENT
COMPACT CASSETTE TYPE
TORQUE METER FOR COMPACT CASSETTE
TITLE
MODEL
FREQUENCY/
APPLICATION
LEVEL
FLUTTER
MTT-111
3 kHz, —10 dB
Tape speed,
Wow and flutter
check
AZIMUTH
MTT-113
6.3 kHz, —10 dB
MTT-113C
| 8kHz, —10 dB
MEASUREMENT
APPLICATION
RANGE
10 — 100 g-cm
Normal : Playback torque
}1.5-10¢em
| Normal : Back-tension
TW-2121
10 — 100 g-cm
Reverse : Playback torque
Head azimuth
adjustment
MTT-114
10 kHz, —10 dB
1.5—10g9-cm
Reverse : Back tension
DISTORTION
| MTT-118
| 1 kHz, —10dB
Distortion check'
TW-2231
| 30 — 200 g-cm
Fast-forward, Rewind torque
level adjustment
TW-2412
O0-—300g
Normal : Driving power
DOLBY
LEVEL!
MTT-150
Dolby B-Type
Dolby NR
CALIBRATION
Tone 200 nwb/m | B-type level
adjustment
BLANK
MTT-502
Record fre-
quency check
TW-2422
0 — 300g
Reverse : Driving power
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