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OK?..manual is complet and helpfull... for repairing such a old and rare boombox like JVC PCM it is necessary...
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Super Anleitung. Ordentliche Auflösung. Das ganze noch in Deutsch wäre zu schön. Alle Datenblätter sind sauber Kopiert und alle Leitungswege sind sauber ausgeführt
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Thanks God for the internet and thanks for the service like this - proffessional solution on time.
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About the service it's very fast and reliable. About the manual the quality is high enough to read even the tiniest details on the wiring diagrams so you can't ask much more than that, let it alone for a manual of a product from 20 years ago. Thank you, very satisfied.
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The downloaded quality was as good as the orignial
TUNER SECTION
0 dB=1µV
AM Tuning Voltage Adjustment
Main board TP1 F G VT DC voltmeter
+ �
Procedure: 1. Set the reception frequency of the unit to 530 kHz. 2. Adjust L105 for 1.2 ± 0.05 V reading on the DC voltmeter. 3. Set the reception frequency of the unit to 1,710 kHz. 4. Confirm that the voltage reading on the DC voltmeter is within 8.0 ± 0.5 V. Adjustment Location: MAIN board (See page 14) AM Tracking Adjustment
loop antenna loop antenna (Supplied accessories)
AM RF SSG set 30% amplitude modulation by 400 Hz signal AM ANTENNA terminal (TM1)
60 cm
Field strength dB (µV/m) =SSG output level dB (µV/m) �26 dB.
Procedure: 1. Tune the set to 600 kHz. 2. Set the output of AM RF SSG so that the input level of the set will become 60 dB (µV/m). 3. Adjust L104 so that when the waveform on the oscilloscope is maximum, no noise appears. 4. Tune the set to 1,400 kHz.
5.
Adjust TC102 so that when the waveform on the oscilloscope is maximum, no noise appears.
� Repeat the procedures in each adjustment several times, and the tracking adjustment should be finally done by the trimmer capacitors. Adjustment Location: MAIN board (See page 14)
FM Tuning Voltage Adjustment (US, Australian, Mexican model)
Main board TP1 IF G VT DC voltmeter
+ �
Procedure : 1. Set the reception frequency of the unit to 87.5 MHz. 2. Adjust L103 for 1.2 ± 0.05V reading on the DC voltmeter. 3. Set the reception frequency of the unit to 108 MHz. 4. Confirm that the voltage reading on the DC voltmeter is within 7.8 ± 0.5V. Adjustment Location: MAIN board (See page 14)
� 13 �
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