Service manual

4. Circuit Description

1. LCD Integrated Power System (LIPS)

The LCD Integrated Power System (LIPS) is a power module combined adaptor and CCFL inverter. It accepts

100~240Vac and supply 12Vdc and 5Vdc to main board and TFT-LCD panel. About CCFL dimming and on/off

function is controlled by micro-controller.

2. Scaler

The TSU56AK is total solution graphics processing IC for LCD monitors with panel resolutions up to SXGA. It is

configured with a high-speed integrated triple-ADC/PLL, an integrated DVI receiver, a high quality display processing

engine, and an integrated output display interface that can support LVDS panel interface format. To further reduce system

costs, the TSU56AK also integrates intelligent power management control capability for green-mode requirements and

spread-spectrum support for EMI management. The TSU56AK incorporates the world’s first coherent oversampled RGB

graphics ADC in a monitor controller system. The oversampling ADC samples the input RGB signals at a frequency that is

much higher than the signal source pixel rate. This can preserve details in the video signal that ordinarily would be lost due to

input signal jitter or bandwidth limitations in non-oversampled systems. The TSU56AK also incorporates a new Dynamic

Frame Rate (DFR) generator for the digital output video to the display panel that preserves the advantages of a fixed output

clock rate, while eliminating the output end of frame short-line.

Block Diagram

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