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Start up Operation 2-3
TX- ##JX800-83#*, TH-##JX700* (Android TV)
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The 12V from CN2 connector is applied to the Power IC(IC5280) for
supplying power to the Main CPU (IC8000) on the A board. The IC5280 converts the 12V to
STB5V and IC5290/8202 converts the STB5V to STB3.3V/1.5V. These voltages energize
and prepare the microprocessor (CPU) for program execution. The STB3.3V is also applied
to the remote control receiver and the power LED on the Keypad board through connector
A10.
When the Power Switch on, the key3 signal is grounded. (#1)
The IC8000 lights on the RED LED and is ready to power on the TV by receiving the Power
switch on, Remote on, Viera Link and so on. This is a standby state.
When the power on command from the power switch, the remote control and so on is
provided to IC8000, IC8000 first outputs the "power control " command.
2
: A board >
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