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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
 ;
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!
Alignment and Adjustments
1-4-6 Static Focus Adjustment
PRECAUTION
1. Select the �DYNAMIC� video mode. 2. Input a crosshatch pattern. 3. Cover the lenses that are not being adjusted. 4. Connect a convergence jig and read data. 5. Adjust the lens for best focus. (See Fig, 4-1) 5. Green lens adjustment: Set the lens at the point where Blue just changes to Red. If the color aberration is irregular throughout the picture screen, adjust the lens to show Red color aberration (approximately 1~3 mm area) within a 3-block grid around the horizontal center-line. If the color aberration is irregular, adjust the lens as shown in the diagram below. (Accurate alignment of Green is important for overall color quality.) 6. Red lens adjustment Set the Red lens at the point where Orange becomes Crimson. 7. Blue lens adjustment Set the Blue lens at the point where Purple becomes Green.
P L1 L2
4. When the lens is turned clockwise, the color aberration will change as follows: Lens R G B Color Aberration Change Orange - Crimson Blue - Red Purple - Green
STATIC FOCUS (CONTINUED)
Vary the focus pack VR (Red, Blue) on the front cabinet. Adjust the TV for best possible focus around the center of the crosshatch pattern, without losing overall screen balance. Figure Crosshatch Pattern Examine these points together.
Examine these points together
Fig. 4-1 Crosshatch Pattern.
RED ABERRATION BLUE ABERRATION L1, L2_ P <
1-4-7 Lens Focus Adjustment
PRECAUTIONS
1. Do this adjustment after the static focus adjustment and the tilt adjustment. 2. Select the �DYNAMIC� video mode. (Contrast:100, Brightness:50) 3. Input a crosshatch pattern.
Fig. 4-2 Color Aberration
ADJUSTMENT
1. Loosen the lens screws. 2. Cover the two lenses that are not being adjusted. 3. Adjust the lens, observing the color aberration vertically and horizontally within 3 blocks of the center of the crosshatch pattern.
1-16
Samsung Electronics
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