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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!
NOTES: 1. Since the G light is very important for picture quality and performance, pay special attention in its adjustment. 2. Be careful not to touch the lens with your fingers when adjusting. (5) In case of R lens. Set the position where the chromatic aberration changes from red to crimson. As shown below, observe the vertical bright line and adjust lens focus where the crimson or red chromatic aberration slightly appears inside and crimson or red outside (reference value : 1~3mm) at the point specified in table below. Change the signal and fineadjust in the same way as the G lens. L
OPTICAL FOCUSING ADJUSTMENT BLUE
CHASSIS SCREEN SIZE L1 and L2 (PITCHES from CENTER) L1&L2 COLOR ABERRATION I 43GX10B/50GX10B 43� 50� 3.0 3.0 50DX10B/60DX10B 60� 50� 3.0 3.0
* * ** ** * * ** ** 2mm MAX 3mm MAX 3mm MAX 2mm MAX ** ** * *
(NOTE)
O 2mm MAX 3mm MAX 2mm MAX 2mm MAX * Slightly reddish or no color ** Slightly reddish or no color
Adjustment Procedure (7) After all colors have been adjusted, display all colors with the cross-hatch pattern signal and compare the focus (optical focus) performance with the limit sample set. (8) Then, select the circle pattern signal and compare the focus (optical focus) performance of each color and all colors together with the limit sample set. (9) If the focus performance is worse than the limit sample set, re-adjust step (1) to (6).
I
CHASSIS SCREEN SIZE L1 and L2 (PITCHES from CENTER) L1&L2 43GX10B/50GX10B 43� 50� 3.0 3.0
O
50DX10B/60DX10B 60� 50� 3.0 3.0
2.5 STATIC FOCUS ADJUSTMENT
Adjustment preparation (1) LENS FOCUS adjustment should be finished. (2) Contrast : MAX Brightness : Center. (3) Receive the circle pattern signal. (4) Apply covers to the lens of the colors you are not adjusting and project only one color on the screen. Adjustment procedure (1) Red and blue static focus adjustment. Adjust the static focus VR on Focus pack (UFPK) so that the center of circle pattern is the most clear. Check that the focus does not get conspicuously worse at the edges of the circle pattern signal or cross-hatch signal. (2) Green static focus adjustment. Adjust the static focus VR on Focus pack (UFPK) (for green) so that the center of circle pattern is the most clear. Check that the focus does not get conspicuously worse at the checking point, the periphery of circle pattern cross-hatch signal. NOTE: Checking point for the periphery of picture.
OPTICAL FOCUSING ADJUSTMENT RED
COLOR ABERRATION
(NOTE)
* * ** ** * * ** ** I 2mm MAX 3mm MAX 3mm MAX 3mm MAX ** ** * * O 2mm MAX 3mm MAX 3mm MAX 3mm MAX * Slightly reddish or no color ** Slightly reddish or no color
NOTE:
Setting the center between Red and crimson is optimum.
(6) In case of B lens. Set the position where the chromatic aberration changes from purple to green. As shown below, observe the vertical bright line and adjust lens focus where the purple or green chromatic aberration slightly appears inside and purple or green outside (reference value : 1~3mm) at the point specified in table below. Change the signal and fineadjust in the same way as the G lens. L
NOTE:
I O Setting to the center between purple and crimson is optimum. Checking point
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