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POWER-BLOCK check
,and all status of 5V & 3.3V is working well
2. unstable or uneven rectangle waveform without same duty, that means ABNORMAL operation was
happened, check 3.3V or 5V ,if short-circuit or bad component
3. rectangle waveform with large spike & harmonic pulse on front side , means all 3.3v is no load, U200
Gmzan2 was shut-down, and only U302 MCU still working , that means the monitor is in power saving
status , all power system is working well.
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