Videocon Mstar MST719, Mstar MST719DU, Руководство по обслуживанию

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MST719 Service Manual
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9. Other ICs Introduction
a) 74HC4052D (U14,U15) for external audio source switch.
b) PI5V330 (U6) for option external module DVD or USB with YPbPr signal switch,If
not use DVD or USB function this IC no need install.
c) RC4558 (U4) for AV output audio amplifier,
because the external audio signal by
74hc4502D switched the audio level not enough(under 620MVrms).
d) 24C04 (U7,U8) for VGA and HDMI DDC memory.
e) 24C32 (U21) for EEPROM.
f) 24C04(U19) for HDMI EDID@HDCP.