LG 177V 서비스 매뉴얼 - 페이지 10

{카테고리_이름} LG 177V에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. LG 177V 33 페이지.

15. H & V Blanking and Brightness Control.

Blanking circuit eliminates retrace line by supplying

negative pulse to the G1 of the CRT. And Brightness

circuit is used for control of the screen brightness by

changing DC level of the G1.

16. Image Rotation (Tilt) Circuit.

This circuit corrects the tilt of the screen by supplying the

image rotation signal to the tilt coil which is attached near

the deflection yoke of the CRT.

17. Moire Rdduction Circuit

This circuit reduce interference between the periodical

display pattern and the CDT's mask.

The positions of every other one dot video signal

beams(red, green, and blue beam) are shifted finely, thus

reducing interference.

18. OSD Circuit

This circuit is used for performing the OSD(On-Screen-

Display) function.

When a user selects the OSD Select/Adjustment control,

the adjustment status displays on the screen.

19. Video Pre-Amp Circuit.

This circuit amplifies the analog video signal from 0-0.7V

to 0-4V. It is operated by taking the clamp, R, G, B drive

and contrast signal from the Micom(IC401).

20. Video Output Amp Circuit.

This circuit amplifies the video signal which comes from

the video pre-amp circuit and amplified it to applied the

CRT cathode.

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