LG 50PG20 Series, Training Manual

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Plasma Spring 2009 50PG20
Using the Front Power LED for visual clues Using the Front Power LED for visual clues
Note: This information pertains to “Shorted” voltage lines.
Not Open voltage lines.
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(6) Va or Vs Short:
Power LED is lit Red in stand by. At Power On, goes to
Blue. Relay closes. Power LED blinks blue twice and 3rd blink stays blue.
Relay opens, LED goes to red. Power Supply outputs 16V,12V and 5Vcc,
drops to 0V after the relay opens. No Va or Vs. With Relay closed, 330V
OK, then when relay opens, it drops to 155V.
(5) 16V Short:
Apply AC Power , Power LED flashes Blue. Relay clicks rapidly
on and off.
(3) M5V Vcc Short:
Apply AC Power, goes to flashing Red and Blue.
Relay Clicks “On and Off”
(1) STBY 5V Short or Open:
Power LED does not light in stand by. No Power
button function.
(4) 12V Short:
Power LED is lit Red in stand by. At Power On, Power LED
flashes 2 times Blue then 1 Long Blue goes back to Red. Relay clicks off
immediately.
(2) AC Detect Open (Shorted Reset Line):
Power LED is lit all Blue,
5V STBY OK. Power Button has no effect.