Standby Power_ All Except D2 Series - Panasonic TC-L42D2 Technical Manual

Standby Power_ All except D2 Series

When the TV is plugged in, AC voltage is applied to the standby circuit of the power supply circuit to produce
STB5V. The STB 5V is provided to the A board via pin 1 of connector P2.
The STB 5V enters the application specific integrated circuit (ASIC), IC4700, for conversion to STB3.3V. The
STB3.3V is applied to IC8001 to energize and prepare the internal microprocessor for program execution.
The 3.3V from the voltage regulator is also applied to the remote control receiver and the power LED on the
K board through Pin 3 of connector A10.
If the STB5V is missing, the TV is dead (No power)
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