Can you tell me the condition when the “DC OK” LED turns on? What are the conditions that will cause the LED to turn off?

The LED is directly connected across the output voltage (LED in series with current limiting resistor). The LED will turn ON as soon as the power supply is switched on.

The LED will turn off under the following conditions:

  1. When the AC Supply is turned off or not present.
  2. The LED is faulty.
  3. The output voltage is faulty or not present

The LED light will be blinking when it is in the hiccup protection mode.

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