Description Of Block Diagram - LG Flatron 27EA63V Service Manual

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1. Video Controller Part.

This part amplifies the level of video signal for the digital conversion and converts from the analog video signal

to the digital video signal using a pixel clock.

The pixel clock for each mode is generated by the PLL.

The range of the pixel clock is 25Mhz ~ 148.5MHz.

This part consists of the Scaler, ADC converter, TMDS receiver and LVDS transmitter.

The Scaler gets the video signal converted analog to digital, interpolates input to 1920X1080 resolution signal

and outputs 8-bit R, G, B signal to transmitter.

2. Power Part.This part consists of a DC-DC converter converting 19V that is powered by adapter to 5V,and

one regulators converting 5V to 3.3V and 1.2V.

19V is also supplied to LED driver IC to power module, and other converted powers supplies to IC components

of main board.

3. MICOM Part.

This part is include video controller part. And this part consists of EEPROM IC , code memory, Reset IC and the Micom.

The Micom distinguishes source signal by polarity and frequency of the H/V sync and set resistor value to IC.

The value that adjusted by user that are auto set, H/V position, clock, and phase is controlled by OSD.

Only for training and service purposes

DESCRIPTION OF BLOCK DIAGRAM

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LGE Internal Use Only