Daewoo DVT-14H2(T)FG/(T)PG, DVT-14/20H2(T)P, DVT-14/20H1(T)P, DVT-14/20H2(T)D Circuit Description

CIRCUIT DESCRIPTION

Appendix

Video

1. Outline

This video circuit uses a LA71598SM Super A/V 1 chip IC made by SANYO which includes luminance and color pro cessor, CCD and PREAMP.

This IC has 100 pin, but only 79 pin(10~74 pin and 81~94 pin) are related to Video circuit among them.

2.Video circuit

A. EE mode

1.0Vp-p video signal out of SCART JACK or CHROMA IC is input to pin 38,34, of ICY01. One of them is selected, and input to AGC AMP(sync and peak AGC).

Output from AGC AMP is input to QV/QH insert circuit.

After it is amplified 6dB through Video Amp, 2.0Vp-p signal is output to pin 29.

Finally it is output through pin 17 of I501(TDA8841)

EE mode process

		ICY01
38	AGC		QV/QH	INSERT
Video
	AMP
in
34			VIDEO AMP
				29
SCART
JACK	13	I50 1	17
OUT

Fig . 1 EE mode process

1