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This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
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Ordered service manuel for a hard to find plasma tv - your company made it easy to find and purchase - I will use you again
Thanks for your help
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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
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This service manual for the Kenwood KT-990D was reproduced really well ,is very legible and manual is complete.Combined with the low price paid,in the future,I will be checking Owner-Manuals.com any time I need a manual.
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When I purchased this manual I had my doubts regarding the quality as the price was so reasonable as compared to other outlets.
The manual itself is of high standard the print is very clear as are the diagrams. Obviously with the diagrams one has to zoom in otherwise it is to small to be able to read.
Overall I am very pleased with the company who delivered as they said and with the manual they supplied.
I occasionally require a manual and now having registered with this company I shall order from them in the future.
3-3. SERVO SYSCON CIRCUIT
A.
Playback picture is not good.
Noise appears although adjusting tracking. YES
NO
Adjust tracking.
Noise shakes up and down on the screen.
NO
Noise appears although change cassette tape.
YES
Check and re-adjust the Path of Deck.
YES
Is CTL pulse applied to pin 73 of IC601?
NO
CTL HEAD height is normal and there is not dust.
NO
Adjust the HEAD height and remove dust.
YES
YES
Check circuit adjacent to IC601.
Is CTL pulse input to pin 71 and 72 of IC601?
NO
Check R523, R524 C508, C509.
YES
The voltage of pin 91 of IC601 is not changed. YES
NO
check R518 and C511.
Check IC601.
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