ELECTRICAL ADJUSTMENTPRACTICAL SERVICE FIGURE
< TAPE RECORDER SECTION >< RADIO SECTION >
68. Tape speed AdjustmentSensitivity:MAIN C.B
Condition: Y Test tape: TTA-100(IHF, THD 3%)FM1 Less than 25dB
Y Test point: PHONES JACKFM2 Less than 25dB
Y Adjustment location: SFR of deck motor(S/N 20dB)MW Less than 60dB
Method: Play back the test tape and adjust so that theIntermediate frequency:FM 10.7MHz
76output frequency is 3000Hz.AM 465kHz
9. Azimuth Adjustment< TAPE RECORDER SECTION >
4
Condition: Y Test tape: TTA-320
Distortion:Less than 3% (PB, 1kHz)
Y Test point: PHONES JACK
Less than 8% (REC/PB, 1kHz)
Y Adjustment location:Azimuth adjustment
L106S/N ratio:More than 40dB
screw
(PB, REC/PB, AC, DC)
TC4Method: Play back the test tape and adjust so that theTC1
Erasing ratio:More than 30dB
output is maximum.
L101TC2TC107 L105Wow & Flutter:Less than 0.35% (RMS)
TC3
Take-Up Torque:20-60g-cm (FWD, REV)
L102TC10510. AC Bias AdjustmentF.F & REW Torque:55-120g-cm
Condition: Y Test tape: TTA-630
PVC1Test tape:TTA-100
L104Y Test point: TP1
NORMAL TTA-602L109
Y Adjustment location: L301
L301TTA-210
Method: Set up the recording mode. Adjust L301 so that
L103TTA-257
the TP1 becomes 70kHz.
0143 2
M3
89
< RADIO SECTION >
1. AM IF Adjustment5. FM2 Frequency Range Adjustment
L109 .......................................................................L104 ........................................................................465kHz87MHz
TC2 ........................................................................106MHz
2. FM1 Tracking Adjustment
L105 ........................................................................6. AM Tracking Adjustment65MHz
TC107......................................................................L101 .......................................................................74MHz600kHz
TC4 ....................................................................... 1400kHz
3. FM1 Frequency Range Adjustment
L103 ........................................................................7. AM Frequency Range Adjustment64MHz
TC105......................................................................L102 .......................................................................75MHz515kHz
TC3 ....................................................................... 1635kHz
4. FM2 Tracking Adjustment
L106 ........................................................................ 88MHz
TC1........................................................................ 109MHz
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