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There are currently no product reviews.
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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.
DAC (IC1: UPD6379GR)
The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into analog waveforms and output them to each channel separately.
Synch signal SINC L OUT DAC LSI6 UPD6379GR R OUT CLK SI Word clock LRCK WCKO Bit clock BCKI Data SO DSP LSI1 HG51B277FB Data SI Word clock WCKI Bit clock BCK LRCK SO SCK1 CPU LSI4 GT913F
FILTER BLOCK
Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the waveforms.
AVCC
2.7 K
To main volume 15 V10 µ
8 � 6 5 +
C472(H)
L
7 4
2
10 K
10 K
10 K 10 µF
R154
Left From DAC
AG M5218APR (1/2) � 2 IC104 � + 2 3
C221B(A)
AG AVCC C472(H)
AG 2.2 K
15 V10 µ
R
1
2
10 K
10 K
C152(H)
10 K
100 K
To main volume
AG
10 µF
Right From DAC
AG
AG
�8�
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