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Thanks for offering this item at such a good price. Proved handy in identifying the part I was looking for my set.
Thanks again.
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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.
SECTION 3 ELECTRICAL ADJUSTMENTS
TUNER SECTION
[FM] Setting ENT/BAND switch : FM Signal generator
FM RF signal generator 16� 0.01µF Set Headphones jack (J401) TP1(ANT) MAIN board Level meter
0 dB = 1 µV
FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L202 76.0MHz CT202 108.0MHz AM VCO ADJUSTMENT Adjust so that the voltage at TP3(LPF) becomes 2.60 ±0.05V. L205 531kHz AM IF ADJUSTMENT Adjust for a maximum reading on level meter. T201 450kHz AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L201 CT201 585kHz 1,485kHz
22.5 kHz frequency deviation by 400 Hz signal 30% Output level : as low as possible
[AM] Setting ENT/BAND switch : AM
AM RF signal generator
FM STEREO (76kHz) ADJUSTMENT
Adjustment point Frequency Indication Frequency counter Reading
Put the lead-wire antenna close to the set. Set
Level meter 16�
RV301
FM76MHz
76kHz ±200Hz
FM STEREO (76kHz) Procedure :
FM RF SSG
30% amplitude modulation by 400 Hz signal Output level : as low as possible
Headphones jack (J401) Digital Volt meter
0.01µF to TP1(ANT) Carrier frequency : 76MHz Modulation : no modulation Output level : 0.1V (100dB)
MAIN board TP3(LPF)
1. Connect frequency counter to the positions shown below. 2. Tune the set to 76MHz.
TP4(76kHz) 0.01µF Frequency counter + � Use a frequency counter having input impedance of 10M� or higher.
� Repeat the procedures in each adjustment several times for a maximum reading on level meter, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. Adjustment Location : � MAIN board (side A) �
� MAIN board (side B) �
TP4 (76kHz)
RV301 FM STEREO (76kHz) Adjustment
T201 AM IF Adjustment
L205 AM VCO Adjustment L201, CT201 AM Tracking Adjustment
TP3 (LPF) TP1 (ANT)
�4�
L202, CT202 FM Tracking Adjustment
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