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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!
[ Method using light-meter ] (1) Adjust [V-COM] again. (2) Set a light-meter with analog output terminal at the screen center and observe waveform of the analog output using an oscilloscope. (3) Open Menu [DDIC] [Flat Field / DD Ctrl], and turn [R Mute], [G Mute], [B Mute] to [On]. (4) Open Menu [Gain/Setup] and click [Gain]. Record the data of [R], [G] and [B] at this time. (5) Set all phases of [R], [G] and [B] of [Gain] to 0. (6) Open Menu [Flat Field / DD Ctrl] and set [R] Flat Field level to 500, then [G] and [B] to 0, respectively. (7) Open Menu [Gain/Setup] and click [Gain]. Return the 0-PHASE of [Gain] to the data recorded in 4) above. (8) Click [DC Setup]. Using an oscilloscope, observe the waveform of the flicker. Then adjust the 0-PHASE so that the amplitude of the flicker is reduced to a minimum. (9) Click [GAIN] and set the 0-PHASE to 0. (10) In the same manner as for above, adjust 1-PHASE to 7-PHASE. (11) In the same manner as for the steps 6)-10) above, adjust [G] and [B]. (12) Open [DDIC] [GAIN] and return the value of [GAIN] to the value recorded in 4) above. (13) Adjust V-COM again. G BLACK 8 BARS ADJUSTMENT (1) Supply a G gray-scale signal. (2) Open Menu [DDIC] [Gain/Setup], then click [G] and [Setup]. (3) Observe the darkest gradation with vertical stripes and the lighter portions (1-2 lighter gradations) from the darkest gradation. Then adjust the phase with the adjustment cursor so that the vertical stripes are reduced to a minimum. (Adjust each phase separately after turning [ALL] off.) Note : Set [Separate A and B] to off, then adjust [A-line] and [B-line] at the same time. G WHITE 8 BARS ADJUSTMENT (1) Supply a G gray-scale signal. (2) Open Menu [DDIC] [Gain/Setup], then click [G] and [Gain]. (3) Observe the lightest gradation with vertical stripes and the darker portions (1-2 darker gradations) from the lightest gradation. Then adjust the phase with the adjustment cursor so that the vertical stripes are reduced to a minimum. (Adjust each phase separately after turning [ALL] off.) Note : Set [Separate A and B] to off, then adjust [A-line] and [B-line] at the same time. R ADJUSTMENT (1) In the same manner as for G Black 8 bars and G white 8 bars adjustments, adjust R. B ADJUSTMENT (1) In the same manner as for G Black 8 bars and G white 8 bars adjustments, adjust B.
(No.PA020)1-13
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