54 9.Trouble Shooting; System Block Diagram - Philips 20TA1000/93 Service Manual

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TPF1.3A LA
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9.2Circuit Description
1. General Description
This LCD-TV-F1 support PC analog input up to 800X600 75Hz mode for SVGA panel, and support TV (RF), YC,
andCVBS. Also for Y Pb Pr signal input from SDTV to HDTV (480I, 480P, 720P, 1080i 60Hz and 576I, 576P, 720P,
1080I 50Hz).
This LCD - TV use MST51502as 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 MSP3415G is used for TV sound processing, and output to post amplifier .

2. System block diagram

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9.Trouble Shooting
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