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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
3. EMERGENCY TROUBLE SHOOT
3-1. General Function
Yes
No sound from speakers
Output connector is missing
No
Yes
Put exactly output connector in.
A
Output connector is inferior goods
No
Yes
Change output connector to superior goods
Power IC, Output Socket is inferior goods
Yes
Yes
Change Power IC, Output Socket to superior goods Re-adjust Balance Ref. Balance = Center of front, rear Front / Rear
Different each channel have output level (Front, Rear, Left, Right)
Balance of front and rear is in one side
No
Yes
Balance of Left, Right is in one side.
Yes
Re-adjust Balance of Left, Right
Ref. Balance = Center
Left / Right
Treble or Bass is low unusually
Yes
Balance of Treble or Bass is in one side.
Yes
Re-adjust Balance of Treble or Bass
Ref. Balance = Center
Treble / Bass
Yes
Power is not supplied
No
Yes
Return to
A
L.C.D or Lamp is not turned off.
Output voltage of power IC is little.
No
Yes
Change Regulator IC and check output voltage.
Ref. Regulator IC output
Voltage = V
LCD or Lamp is inferior goods.
Yes
Change LCD or Lamp to superior goods.
Ref. Electrical Parts List
L.C.D., Lamp
3
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