Standby Power_ D2 Series - Panasonic TC-L42D2 Technical Manual

Standby Power_ 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 13 of connector A03.
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.
IC8001 outputs the iPod POWER_ON command to turn on the switch that provides STB5V to the iPod
connector.
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 5 of connector A10.
If the STB 5V is missing, the TV is dead (No power)
Slide # 24