Circuit Description - Philips 15MF605T/17 Service Manual

F1 lcd monitor/tv f1-15" f1-20"

Table of Contents

Magnavox LCD TV

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1. General Description

This LCD-TV-F1 support PC analog input up to 1280X768 75Hz mode for WXGA panel, and support TV (RF), YC, CVBS, and SCART. Also for

Y Pb Pr signal input from SDTV to HDTV (480I, 480P, 720P, 1080i 60Hz and 576I, 576P, 720P, 1080I 50H z).

This LCD - TV use MST51510 as Scaler engine, which has embedded Analog D-sub, digital DVI decoder, scaling input signal to panel OSD

mapping and simple 3D de-interlacer. The extra SDRAM is to accomplish video frame rate conversion and PIP function.

The external CPU can be used to back light control, RC, keypad input, IIC I/O communication and. TV tuning control, sound control, and

SAA7119A video decoder.

Video decoder SAA7119 is used for TV video processing and convert it with CCIR 601/16bits or 656/8bits digital format and send to Scaler for

de-interlace process, and also CC,V-chip data decode.

One audio decoder MSP34XXG is used for TV sound processing, and output to post amplifier and SCART out.

An option function in WE model Telttext display . Data decode is done by SAA5360, output RGB/FB is to video decoder input for text

overlapping. In non-text model, this chip is N.C.

2. System block diagram

MM Tuner

Tuner_CVBS

Y/C

SC_R/G/B or YPbPr

AV_CVBS_RCA

AV_CVBS_SC

_IF

PC_AUD_in

CVBS_AUD_in

SC_AUD_in

YPbPr_AUD_in

SC_AUD_OUT

Scaler choice:

If the panel interface is TTL type: 20 use

If the panel interface is LVDS type: 14 15 17 use MST51512L