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The Service Manual for the Kenwood KR-V55R provided by owner-manuals.com was as described/advertised. The contents provided the necessary information to effect a diagnosis of the unit. The schematics above all else was instrumental in tracing the the signal flow from component to component.
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This manual was the factory original. Excellent value and contained all the details I needed. Easy dowwnload provided the information when I needed it.
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Impeccable, document très complet. Perfect, i get all i need. All schematic are correct. Thanks
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The manual is of better quality compared to other. I found it less expensive and therefore it it is the best buy cost vs quality.
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I bought the service-manual of the sony ICB-1020(an old transmitter-receiver) at "www.Owners-Manual.com", I found the service-manual for a fairly cheap price(in comparison with other sellers). I filled in some questions, payed the order with Ideal, and within 24 hours I had my service manual. I was very happy:In no time I had my service-manual and everything, but literally everything was noted down in the manual; the electronic scheme, the parts list, etcetera.
A very practical, reference-document.
TROUBLE SHOOTING GUIDE
1. NO POWER
NO POWER
CHECK C910 DC VOLTAGE? DC=MORE THAN 150V YES
NO
TROUBLE IN F901, R901, AND R910, D901 OPEN/SHORT
CHECK T901 PIN 3?
NO
CHECK IC901 PIN 6 ?
20V
NO
TROUBLE IN IC901, IC902, IC952, Q901, R917, R920, AND R921
YES YES TROUBLE IN Q901, R917, R920, AND R921
CHECK SMPS 2nd DC VOLTAGE ?
NO OUTPUT VOLTAGE
CHECK Q501, 2nd DC VOLTAGE LINE ?
NO
TROUBLE IN Q501, 2nd DC VOLTAGE LINE
6.3V/ 12V/ 12.5V 14V/ 72V YES
CHECK IC952 PIN 7 VOLTAGE (5V)?
NO
TROUBLE IN IC952
YES
TROUBLE IN OTHER PRIMARY CIRCUIT
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