Sharp WOQ-272H(R) - Mechanical Adjustments; Mechanical Adjustment Items and Test Tapes

©
a2 eee
Driving
Tape
tention
power
measuring
cassette
TW-2412
Playback
CNP501
Frequency
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:
Heer
ea
paar
Record/Playback
TW-2231
55
—
110
g-cm)
Head
Figure 8—1 AZIMUTH
Test tape Azimuth Sine waveform
MTT-113C adjusting screw | attains the
maximum.
Tape
Test
tape
High
speed
High
speed
=
speed
MTT-111
(Short
TP1
Deck
1:
Test
Tape
.
‘
:
and
TP2)
(6,000
+
800
Hz)
MTT-111
Deck
2:
VR704
|
Deck
2:
*1
Record/Playback
CNON,
Normal
speed
Normal
speed
ead
;
Deck
1:
VR701
|
Deck
1,2
Deck
2:
VR702
|
3,000+
10
Hz
Figure
8-2
TAPE
SPEED
*
Perform
the
high
speed
peal
las
Power
Supply
P.W.B.
the
normal
speed
adjust-
ment.
* 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