Husqvarna WS442HF Workshop Manual page 69

TECHNICAL INFORMATION AND TROUBLESHOOTING
Controller Board PP490 (and PP440 Japan 200V), FKD20
Most LEDs on this circuit board runs a function test at startup for about one second.
Bottom left corner, motor interface.
3V3
Indicates that controller board has power.
PWREN
Lit when power is delivered to blade motor.
FAULT
Lights up for a short while if short circuit (or other peak current) is
detected on blade motor output.
BRAKE Lit when power is directed to breaking resistor, i.e. when electric blade
brake is active.
DLED1
19 kW motor setup
DLED2
13 kW motor setup
DLED3
Not in use.
DLED4
Not in use.
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