Mitsubishi E55LCD Service Manual page 58

2.3.3 LED control
IC102 pin 42 control Q102 for Green LED lit.
IC102 pin 43 control Q101 for RED LED lit.
2.3.4 Data memory
The display control data are held by the EEPROM(IC101); These display control data are accessed
through the I2C bus of the MCU.,
3 Scaler
The scaler IC (IC401) is controlled by MCU through the I2C bus.
IC401 embeded the ADC provide with the analog interface input.
X401 output 25M Hz fed to IC401.
IC202 schmitt trigger for sync.waveform processor. And fed to IC401 for mode detect.
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