Help me to fool Acer P1500 (replace LED bulb)

Hi my dears! I'm from Vietnam and have a little bit trouble in order to make 3d printer with Acer P1500 projector. So, i would like to replace the uv led bulb with traditional lamp.
I know need to short circuit 2 wire from opposite direction of optocoupler. However it is not sucessful as i hope.
Anyone can teach le what should i do to fool the projector?
 
already short black and brown wire of opposite optocoupler , but it doesnt work
 

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