Adjustment - Sharp System-W7H Serviceanleitung

SYSTEM-W7H
ITEM JIG
Driving Tape tension
measuring
power
cassette
TW-2412
Torque Torque
meter
Play TW-2111
F ast -forward
TW-2231
Rewind
TW-2231
Azimuth Test tape Azimuth
MT T-1 14
screw
Tape
Test tape Normal
speed
MT T-111
Deck
Deck
High speed
Deck
Deck
• Short
Record/Playback
Head
Test tape
unit
MTT-111
Figure 12-2
ITEM
JIG
LP record which
Turntable
is with
speed
strobo viewer
IDLE CURRENT
SETTING POSITION

ADJUSTMENT

POINT
VR501, VR502
MECHANICAL ADJUSTMENT
ADJUSTMENT REMARKS (CHECK)
POINTS
(More than 180 g)
(Play: 35-60 g-cm)
(Fast-forward
70-110 g-cm)
(Rewind.
70-110 g-cm)
adjusting Sine waveform
the maximum.
speed Normal speed
1: VR207 Deck 1: 2990
2: VR209 20Hz
Deck 2: within
1: VR208 —25 Hz different
2: VR210 from that
TP210 Deck 1
High speed
and ground
Deck 1. 5980
when perform-
50Hz
ing the high
speed adjust- Deck 2: within
—50Hz different
ment.
from that
Deck 1
• Perform the
normal speed
adjustment
and then the high
speed adjustment.
Frequency
Speaker
Ou tput
4 ohms
Ground
TAPE SPEED
MECHANICAL ADJUSTMENT
ADJUSTMENT REMARKS
(CHECK)
POINTS
33r .p.m. speed Phono motor
45r .p.m. speed kept in rotation.
CIRCUIT ADJUSTMENT
Volume Control
REMARKS
1.0 — 4.0 mV
(TAPE
Test
Tape
114
Record/Playback
Head
attains
of
of
first
Counter
Figure 12
(PLAYER
is
O
O
O
Figure 12—4
(AUDIO
R515:
R516:
:
SECTION)
Electronic
Speaker
Voltmeter
Output (L-ch)
Playback Mode
Ground
unit
4 ohms x 2
Speaker
Output
Figure 12—1 AZIMUTH
AUDIO P.W.B.
R262
VR204 R 292
—3 ADJUSTMENT
SECTION)
PHONO MOTOR ASSEMBLY
33rpm
o
6
O
45rpm
ADJUSTMENT POINTS
SECTION)
L-channel
R-channel
unit
Figure 12—5
Dual -trace
Oscilloscope
HI CH2
Ground
T P206
POINTS
Electroruc
vottmeter
R5150r
R516