Slide # 36
LED Backlight Control
The inverter receives 174V from the SMPS. The 174V source is provided to
the panel to power the LED. The Backlight_On command from pin 13 of
connector P2 starts the inverter drive signals. The inverter control signal,
PWM, is delivered by the TCON board at pin 15 of connector P2 to control
the brightness of the LEDs. The inverter is responsible for controlling the
amount of current passing through the LEDs.
To avoid catastrophic failures, when the inverter circuit is defective, the
BACKLIGHT_SOS command is output to IC8001 to trigger the shutdown of
the TV. The power LED blinks one time.
Summary of Contents for TC-L32C22 Quick Setup Guide (English
Page 25: ...Slide 25 Power on Part 1_ All Except D2 ...
Page 27: ...Slide 27 Power On Part 2_ All Series Except D2 ...
Page 30: ...Slide 30 Power On Part 2_ D2 series ...
Page 33: ...Slide 33 TC L32U22 Inverter Circuit and 1 Blink SOS ...
Page 35: ...Slide 35 LED Backlight Control ...
Page 47: ...Slide 47 SOS Detect Shutdown ...
Page 50: ...Slide 50 TC L32U22_1 Blink SOS Circuit ...
Page 53: ...Slide 53 3 and 7 Blinks SOS Circuit ...
Page 80: ...Slide 80 Troubleshooting Picture problem D Series Troubleshooting Picture problem D Series ...
