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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.
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I was at first dubious about payiong for downloaded manuals but having done so, I was extremely impressed with quality of the two manual I ordered, well worth the small price I paid.
I would highly recommend these to my friends.
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reasonable price for the schematic - the service is perfect, all as expected and pointed by instructions - good scan of the original plans - thank you!
BLOCK DIAGRAM
Antenna
3 1 TU200 Tuner 2 Q200 IF Amp.
IC200 4 Video Sound Det. Det FM AFT Circuit AGC Circuit VR600 Audio Amp. Volume Control IC600 Speaker
7
IC500
5
IC300 Chroma Circuit Common Driver LCD
Tuning Voltage Generator
6
IC700 Osc. Display Control A-D Converter Auto-Tuning Control
Segment Driver
VR800
8
IC800, Q804~Q806, Q810, Q811 Display Voltage Generator
Power Supply
VCC2 (4.3±0.02V) VCC7 (41.6~51.6V) VEE1 (-6.5~-8.0V)
Brightness Control
1 2 3
� Color Tuner: TU200 TEPU5-02 Selects a desired radio wave and changes it to the video IF signal. � Video IF Amp.: Q200 2SC4238 Amplifies the video IF signal output from the tuner TU by 10 times (20 dB). � Video Det./Sound Det./FM Det./AFT/AGC: IC200 M51348FP Eliminates the carrier wave in the video IF signal, and picks up the video signal and the sound IF signal. Also, the sound signal is picked up from the sound IF signal by FM detection. � Audio Amp.: IC600 NJM2070M Sound amplification. � Chroma Circuit: IC300 M52042FP Generates the tricolor (red, green, and blue) from the video signal. � Osc./A-D Converter/Display Control/ Auto-Tuning Control : IC700 MSM6625-01 GSK-640E Converts the color signal into a digital signal. Also, generates the clock pulse for the display and controls the display. � Tuning Voltage Generator: IC500 MSC1169MS-K Generates the tuning voltage with the tuning pulse (TU) output from 6. � Display Voltage Generator: IC800 BA10358F, Q804 ~ Q806 Q810 Q811 2SD1149-S, 2SD601A-R� 3, 2SB709A-R Generates the display voltages V0 ~ V4 with VEE1 and VCC7 outputs from the power supply.
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