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This service manual was determinant to enable to fix my Alpine Amplifier. I am pleased with my purchase. For a 5 star rating I would like to see a higher resolution scan of the printed circuit board lay-out because the gray scale grafics was dificult to see. Also some schematic diagrams were scanned at a slight angle. Never the less, it had all information I needed to troubleshoot and service my equipment.
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Complete manual, the good quality of reproduction allows enlarged print-out of the schematic diagram in the size it probably had in the original print edition and which is necessary for practical use.
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The service manual was complete and the components on the drawings very good visible.
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downloaded next day , manual is very helpful , fast and easy
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This Service Manual was exactly what I needed to repair my Philips TV. The purchase was convenient and I received the manual at the same day I paid for it.
TROUBLESHOOTING GUIDE
THE AUDIO CAN NOT RECORD
Is bias level at L101 OK?
NO
In starting recording, is there sine wave at pin 7 of IC101? YES
NO
Check POWER BLOCK and voltage of base of Q103.
YES
Check disconnection and short of L101.
Is there audio signal at pin 76,78 and 80 of IC101?
NO
Check IC701 and the circuit from TUNER or audio input jack to IC701 .
YES
Is there voltage of base of Q103 about 5V? YES
NO Change Q103.
Is there sine wave at pin 5 of L101? YES
NO
Change L101.
Check lead wire of A/C HEAD and CONNECTOR.
E-19
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