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RT-203H(S)
©
MECHANICAL ADJUSTMENT
Connect the input/output plug to the receiver, or apply
+12.8V by an external DC power supply.
ITEM
ADJUSTMENT
REMARKS
POINTS
(CHECK)
Driving
Tape tention
More than 180g
power
measuring
cassette
(Play : 35-609-cm)
(Fast-forward :
Tape speed | Test tape
Normal speed
Normal speed|
Deck 1: VR402
MTT-111
Deck 2: VR404
High speed
| High speed
MTT-111
Deck 1: VR401
Deck 2: VR403
Dual-trace
Electronic
Oscilloscope
Voltmeter
Playback Mode
Fast-forward
70-110g-cm)
TW-2231
(Rewind :
ial
aes
@ Pin
Rewind
70-110g-cm)
oe
TW-2231
Figure 10—1
AZIMUTH
Sine waveform
attains the maximum.
Test tape
Azimuth
MTT-114
adjusting screw
As Smail as Possibte
ie
aa)
Normal speed
2990 + 20 Hz
High speed
5276+ 50 Hz
(
7
* To get the unit in playback mode at high speed, short the collector
;
id
and emitter of Q403.
1
it
1
|
t
Record /Playback
Head
Normal/High Speed (Record Mode)
Frequency Counter
VR401
VR404
OOM)
Ground
VR 402
a403
VR403
Figure 10-3
TAPE SPEED
Figure 10—4 ADJUSTMENT POINTS
TEST TAPES FOR MEASUREMENT
COMPACT
CASSETTE
TYPE
TORQUE
METER
FOR COMPACT
CASSETTE
|
T
T
FREQUENCY/
MEASUREMENT
|
TITLE
MODEL
LEVEL
APPLICATION
MODEL
RANGE
APPLICATION
FLUTTER
MTT-111
| 3kHz,--10dB
| Tape speed,
TW-2111
10 — 100 g-cm
Normal : Playback torque
Wow and flutter
1.5 — 10g-cm
Normal! : Back-tension
check
|
MTT-113
16.3 kH
Oue:|
Head'est
'
TW-2121
10 — 100 g-cm
Reverse : Playback torque
|
.
H
z,-
ead
azimut'
7
am
-
;
AZIMUTH
—sIMTT-113C| 8kHz,—10dB | adjustment
ea
ee
MTT-114 | 10 kHz, -10d8
TW-2231
30 — 200 g-cm
Fast-forward, Rewind torque
DISTORTION
MTT-118
| 1 kHz, —10dB
Distortion check
TW-2412
0 — 300g
Normal : Driving power
fevel adjustment
DOLBY LEVEL | MTT-150 | Dolby B-Type | Dolby NR B-type
ee
0 S009
Pewee Dusieg poner.
+ |
CALIBRATION
Tone 200 nwb/m | level adjustment
BLANK
MTT-502
-
Record frequency
|
| check
—10—
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