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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!
LC-20A2M
4. Getting Initialized 4-1. Connect pins (81) and (82) of IC2001 to GND. Turn on the power. 4-2. Select the model number (A2H). 4-3. Select the screen size (20 inches). 5. Adjustments 5-1. +B adjustment (+B ADJ. on page 1) 1) Receive the colour bar signal. 2) Adjust the voltage at pin (8) of P303 to 5.00 ±0.02 V. Note: The 5.00 V level is used as reference to the supply voltage. Make an exact adjustment to 5.00 V. 5-2. Counter bias adjustment ...... �COM BIAS� on page 2 1) Receive the monoscope pattern signal. 2) Adjust the �COM BIAS� setting so that the contrast at the staircase wave is maximum. 5-3. TAMP adjustment 1) Receive the colour bar signal. 2) See if the �Y� reading on page 2 of the adjustment process is somewhere between BB and CA. If not, make the �NTSC TAMP� adjustment to get the �Y� reading in the range of BB thru CA. 3) Then enter the above setting, if made in the �NTSC TAMP� adjustment, in the following items in the manual mode. �PAL TAMP�, �SECAM TAMP�, �PAL-M TAMP� and �PAL-N TAMP�.
(Adjustment process menu on-screen display on page 2)
0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Y data (75% white) 1 2 COM NTSC PAL PAL PAL TV SECAM -M H N B I AS 1 1 1 2 2 2 2 NG 7 9 7 7 7 7 4 0 0 0 R3 Y 0 0 0 0 0 0 0 0 0 0 B5 TAMP TAMP TAMP TAMP TAMP PEAK I 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
RCUTOFF GCUTOFF BCUTOFF G3 G1 B3 B4
5-4. White balance adjustment 1) Receive the monoscope pattern signal. 2) Adjust so that the �RCUTOFF� and �BCUTOFF� settings on page 2 of the adjustment process are optimum. Note: The �RCUTOFF� and �BCUTOFF� settings in the adjustment process should be in the range of -10 thru +10. If without this range, the variable user control range will be reduced.
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