Sharp VZ-1600H Serviceanleitung Seite 12

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ITEM JIG
Tape tention
mesurering
cassette
ADJUSTMENT REMARKS
POINTS (CHECK)
More than 150g
Driving
power
TW-2412
Torque meter (Play:
Play TW-2111 30 — 60 g-cm)
Fast-forward (Fast-forward:
TW-2231 a 50 — 100 g-cm)
Rewind (Rewind:
TW-2231 50 — 100 g-cm)
Azimuth Test tape Azimuth Sine waveform
MTT-114 adjusting attains the
screw maximum.
Tape speed Test tape High speed High speed
H Only MTT-111 Deck 1: VR482 5100 + 60 Hz
Deck 2: VR481 Normal speed
Normal speed 3,000 + 30 Hz
Deck 1: VR484
Deck 2: VR483
* Perform the high
speed adjustment
first and then
the adjustment.
To perform the high speed adjustment at Deck 2, place
Deck 2 in the playback mode and short the two jumper
wires shown in Fig. 18—3.
Tape speed | Test tape
MTT-111
MECHANICAL ADJUSTMENT (TAPE SECTION)
E.V.: Electronic Voltmeter
Dual-Trace
Syncroscope
Speaker Ev.
(L-ch)
Playback
Mode
Test Tape
MTT-114
4ohms x 2
Record/Playback (R-ch)
Head
Figure 18—1 AZIMUTH
Speaker Terminal
Frequency Counter
Playback Mode VA
' 4
Record /Playback
Head
Figure 18—2 TAPE SPEED
SHORT (Jumper Wire)
be
Mechanism
P.W.B.
VR483 VR481 VR484 vR482
Ceococeoc
Figure 18—3 TAPE SPEED
TEST TAPES FOR MEASUREMENT
COMPACT CASSETTE TYPE
TITLE MODEL FREQUENCY/
LEVEL
FLUTTER MTT-111 3 kHz, —10 dB
APPLICATION
Tape speed,
Wow and flutter
check
AZIMUTH Head azimuth
adjustment
MTT-113 6.3 kHz, —10 dB
MTT-113C | 8 kHz, —10 dB
MTT-114 10 kHz, —10 dB
DISTORTION MTT-118 1 kHz, —10 dB Distortion check
level adjustment
DOLBY LEVEL| MTT-150 Dolby B-Type Dolby NR
CALIBRATION Tone 200 nwb/m | B-type level
adjustment
MTT-502 Record fre-
quency check
TORQUE METER FOR COMPACT CASSETTE
eer MEASUREMENT
RANGE
TW-2111
TW-2121
1.5—10g9-cm
TW-2231 | 30—200g-cm
TW-2412 0— 300g
APPLICATION
Normal : Playback torque
1.5—10 g-cm Normal : Back-tension
10 — 100 g-cm Reverse : Playback torque
Reverse : Back tension
Fast-forward, Rewind torque
Normal : Driving power
TW-2422 0 — 300g Reverse : Driving power
—18—