Sharp RT-W800H - Mechanical Adjustment; Tape Section Adjustment

0
MECHANICAL ADJUSTMENT (TAPE SECTION)
ITEM
ADJUSTMENT
POINTS
Dual-tracn
Electronic Dscilloscops
Head
REMARKS
h34ECK)
More than 150 g
JIG
Tepe tention
measuring
cassette
TW-2412
Torque mete
Play TW-211
Fast-forward
TW-223 1
Rewind
TW-223 1
Test tape
MTT-114
Test tape
MTT-111
Iriving
aver
cl
P
T
A
T
-
Test
Tape
MTT- 11
arque
(Play : 30-60 g-cm)
(Fast-forward :
90-135 g-cm)
(Rewind :
90-I 35 g-cm)
Figure 11-1 AZIMUTH
,zimuth
Azimuth
adjusting screw
Sine waveform
attains the maximum
Normal speed
2,980 k 10 Hz
High speed
(Short TPl@
and TPl@)
5,960 t 20 Hz
we speed
Normal speed
Deck 1: VR404
Deck 2: VR402
High speed
Deck 1: VR403
Deck 2: VR401
Figure 11-2 AZIMUTH WAVEFORM
Record/Playback
Figure 11-3 TAPE SPEED
I
TAPE SELECTOR
CWT PLAY
When measuring the bias current or erase current with
the electronic voltmeter, the reading on the voltmeter
should be increased by a thousand times.
Figure 11-4 ADJUSTMENT POINTS
TEST TAPES FOR MEASUREMENT
1 TORQUE METER FOR COMPACT CASSETTE
1 1 COMPACT CASSETTE TYPE
I
I
TITLE
1 MODEL 1
FREGUENCYl
LEVEL
/ APPLICATION /
MODEL
MEASUREMENT
RANGE
APPLICATION
I
FLUTTER
MTT-1 11 3 kHz, -10 dB
Tape speed,
Wow and flutter
check
TW-2111
lo- lOOg-cm
Normal : Playback torque
1.5 - log-cm
/
Normal : Back-tension
TW-2121
TW-223 1
10 - lOOg-cm
Reverse : Playback torque
1.5 - log-cm
Reverse : Back tension
30 - 200 g-cm
Fast-forward, Rewind torque
AZIMUTH
DISTORTION
1 MTT-118 /
1 kHz, -10 dB
1 p,Xs;o;$;;l;F 1
1 TW-2412 1
o-3oog Normal : Driving power
I
TW-2422
o-3oog
Reverse : Driving power
DOLBY LEVEL MTT-150 Dolby B-Type Dolby NR B-type
CALlBRATlON
Tone 200 nwb/m
level adjustment
BLANK
MT-T-502
-
Record frequency
check
11 -