AT3720A Service Guide
Page 56
no Check Power code no can Display ? AT3720A Troubleshooting Guideline 1. END Check Remote control OK and keypad ? no LCD Panel no Replace Power board or Main board Or IO board or All cable / LED Bright Green color ? NG Replacement Remote control or IR board or Keypad board Check panel's no Check M/B all cable Replacement M/B Replacement Panel Replacement Cable Replacement M/B 50 Chapter 4 LED Bright? Can not power on A Power code Plug in?
no Check Power code no can Display ? AT3720A Troubleshooting Guideline 1. END Check Remote control OK and keypad ? no LCD Panel no Replace Power board or Main board Or IO board or All cable / LED Bright Green color ? NG Replacement Remote control or IR board or Keypad board Check panel's no Check M/B all cable Replacement M/B Replacement Panel Replacement Cable Replacement M/B 50 Chapter 4 LED Bright? Can not power on A Power code Plug in?