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Adjustment Procedures
1. Tuner
Test equipment: Signal Generator, Digital Voltmeter
Adjustment
1. MW Oscillator
Digital Voltmeter to Testpoint TP3.
2. AM IF
Couple Signal Generator via Loop Antenna.
f = 450kHz; no modulation
Digital Voltmeter to Testpoint TP4.
3. MW Pre Stage
Couple Signal Generator via Loop Antenna.
no modulation
Digital Voltmeter to Testpoint TP4.
4. FM Oscillator
Digital Voltmeter to Testpoint TP3.
5. FM Pre Stage
Signal Generator to Aerial Input (TP1 / TP2 Ground);
no modulation
Digital Voltmeter to Testpoint TP4.
Preparation
2 - 2
Adjustment Procedure
At 1620kHz adjust T501 for 8.4V
Adjust T503 for maximum.
Adjust alternating with MW COIL (on the ferrite antenna)
at 558kHz and with VC502 at 1440kHz for maximum.
At 108.0MHz adjust (bend) L502 for 7.2V
Adjust alternating with L501 (bend) at 88.0MHz and with
VC501 at 106.0MHz for AF Maximum.
Ovation CDS 6380 S
±
0.2V.
±
0.2V.
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