Samsung HLN507W1X/XAA Service Manual page 48

Alignment and Adjustments
Remove the screw
at the side of the
light tunnel.
❈ Blow out the dust with strong bursts of air, and then re-assemble in reverse order.
Make sure to work in a clean room to avoid dust getting in again.
❈ Since the existing dust might not be completely cleared,
change the direction of the light tunnel after cleaning with bursts of air.
- Switch the light input part to the output part, and the light output part to the
input part, on a 180 degreeangle.
- This failure can occur only when there is dust on the output part. Any dust on the
input parts are extinguished by heat
❈ Re-assemble the ASSY in reverse order.
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Remove the five screws.
Lift up the bracket and the light tunnel.
Light Tunnel
Fine dusts stick to the light
in the out direction.
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