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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.
IC, TA2020-020 Pin No.
1,5,15 2,8 3 4 6 7 9,12 10,13
Pin Name
NC +5INA, +5INB AGND1 REF OVERLOAD AGND2 VP1,VP2 IN1,IN2
I/O
O I I Not connected. Digital +5V, analog +5V. Analog ground. Reference resistor.
Description
A logic low output indicates the input signal has overloaded the amplifier. (Not used) Analog ground. Input stage feedback drive. Single-ended inputs. When set to logic high, both amplifiers are muted and in low power (idle) mode.
11
MUTE
I
When low (grounded), both amplifiers are fully operational. If left floating, the device stays in the mute mode. Ground if not used.
14 16 17 18 19,28 20 21 22,25 23 24 26 27 29 30 31,32
V2DG GNBATTM SLEEP FAULT PGND2,PGND1 DGND OUTP2+ VDD2,VDD1 OUTP2OUTP1OUTP1+ VDDA CPUMP +5GEN DCAP2,DCAP1
I O O O O O O -
Bias stabilization capacitor. Analog ground. When set to logic high, device goes into low power mode. If not used this pin should be grounded. A logic high output indicates thermal overload, or an output is shorted to ground or another output. Power ground (High current). Digital ground. Bridged output. +13.5V power (High current). Bridged output. Bridged output. Bridged output. Analog +13.5V. Charge pump output capacitor. Regulated +5V source used to supply power to pins 2 & 8. Charge pump switching capacitor.
� 36 �
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