Sanyo LCD-20XR1/AU, Руководство по обслуживанию

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As follows we are going to introduce the inner IC block diagram and function.
1. Inner block diagram of M52760 IF signal processing IC (AFT, QIF, VIDEO OUT)
Descriptions of the pins:
Pin Description
Pin Description
4, 5 VIF input 13 QIF OUT
7 1ST_SIF input 14 VCC
10 AUDIO OUT 18 VIDEO OUT
2. R2S15900SP audio processor with surround stereo
The audio signal from YPrPb/YcrCb or VGA input interface is selective sent to R2S15900SP through the
multi-channel selector HEF4052BT, while the audio signal from the AV inputs is sent to R2S15900SP
directly.
After the processing of bass, treble, balance and AVL by R2S15900S, all these processed audio signals
will be output to audio amplifier TPA1517 (for 15 inch models) or AN5277 (for other models) to amplify,
then the amplified signal will be sent to the speaker to output. The Fig.1-3 is the block diagram of
AN5277.
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IC BLOCK DIAGRAM
LCD-20XR1AU.indd Sec1:12 LCD-20XR1AU.indd Sec1:12 2006/07/13 11:59:26 2006/07/13 11:59:26