cap site
   
 

HORIZONT

1. AGC - Automatic Gain Control ;
2 . VA 1 - the vertical size of the picture size to 4:3 , 50 Hz ;
3 . VA 2 - vertical size of the image size 16:9 , 50 Hz ;
4 . VA 3 - vertical size for the size ratio of 4:3 , 60 Hz ;
5 . VA 4 - the vertical size of the picture size to 16:9 , 60 Hz ;
6. VSH - vertical shift ;
7. VL - linearity in the vertical direction;
8. HSH - horizontal shift ;
9. WG - white point GREEN ;
10 . WR - white dot red ;
11. WB - white dot BLUE ;
12. CR - RED trip level ;
13. CG - level off GREEN ;
14. OSH - Character OSD position horizontally.
Press the button until the desired parameter. to
change the value of the selected option, press the "- " "
+ ".
Note - The service menu below shows
range of adjustment options.
5.2.1 Adjustment of AGC
Apply the input signal level of 60 dBmV at the RF channel on the C- 12.
Connect a digital voltmeter to test point AGC (or
conclusion
1 tuner) . Zero the AGC setting and check the voltage
AGC
checkpoint. Increase the AGC parameter as long as the
AGC voltage is reduced to below 1 The above-mentioned values
voltage . Check that the image was normal at the level of
signal at 90 dBmV .
5.2.2 Adjust the horizontal size
There are four parameter settings: 50 Hz for two and two for 60
Hz.
Input a test pattern PAL B / G on HF . Change
size
vertical up until the black horizontal line
upper and
lower parts of the test pattern will not be very close to
upper and
the lower horizontal sides of the tube and virtually disappear.
Check and make the same adjustments , if necessary , after
some other geometric adjustments.
5.2.3 Adjustment of the offset horizontal and vertical
Input a test pattern for geometric
adjustments on HF . Change to vertical displacement until
test pattern not be centered vertically and
horizontally.
Check and make the same adjustments , if necessary , after
some other geometric adjustments.
5.2.4 Adjust the vertical linearity
Input a test pattern via RF mesh field .
Varies linearly vertically up until sizes
squares
top and bottom of the test pattern becomes equal


 
Tags | Site map | Copyrights
Copyright В© 2012 service-mode.com