< TAPE RECORDER SECTION >
8. Tape speed Adjustment
Condition: • Test tape: TTA-100
• Test point: PHONES JACK
• Adjustment location: SFR of deck motor
Method:
Play back the test tape and adjust so that the
output frequency is 3000Hz.
9. Azimuth Adjustment
Condition: • Test tape: TTA-320
• Test point: PHONES JACK
• Adjustment location:Azimuth adjustment
screw
Method:
Play back the test tape and adjust so that the
output is maximum.
10. AC Bias Adjustment
Condition: • Test tape: TTA-630
• Test point: TP1
• Adjustment location: L301
Method:
Set up the recording mode. Adjust L301 so that
the TP1 becomes 70kHz.
PRACTICAL SERVICE FIGURE
< RADIO SECTION >
Sensitivity:
(IHF, THD 3%)
FM1 Less than 25dB
FM2 Less than 25dB
(S/N 20dB)
MW Less than 60dB
Intermediate frequency:
FM 10.7MHz
AM 465kHz
< TAPE RECORDER SECTION >
Distortion:
Less than 3% (PB, 1kHz)
Less than 8% (REC/PB, 1kHz)
S/N ratio:
More than 40dB
(PB, REC/PB, AC, DC)
Erasing ratio:
More than 30dB
Wow & Flutter:
Less than 0.35% (RMS)
Take-Up Torque:
20-60g-cm (FWD, REV)
F.F & REW Torque:
55-120g-cm
Test tape:
TTA-100
NORMAL TTA-602
TTA-210
TTA-257
ELECTRICAL ADJUSTMENT
< RADIO SECTION >
1. AM IF Adjustment
L109 ....................................................................... 465kHz
2. FM1 Tracking Adjustment
L105 ........................................................................ 65MHz
TC107 ...................................................................... 74MHz
3. FM1 Frequency Range Adjustment
L103 ........................................................................ 64MHz
TC105 ...................................................................... 75MHz
4. FM2 Tracking Adjustment
L106 ........................................................................ 88MHz
TC1 ........................................................................ 109MHz
L101
L301
L102
L109
PVC1
TC3
TC2
L104
L106
L105
TC1
TC4
0
1
4
6
7
6
4
MAIN C.B
3 2
8
9
M3
TC107
TC105
L103
5. FM2 Frequency Range Adjustment
L104 ........................................................................ 87MHz
TC2 ........................................................................ 106MHz
6. AM Tracking Adjustment
L101 ....................................................................... 600kHz
TC4 ....................................................................... 1400kHz
7. AM Frequency Range Adjustment
L102 ....................................................................... 515kHz
TC3 ....................................................................... 1635kHz
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Summary of Contents for CS-131 VJ
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