User guide

LGE Internal Use Only
-17-
Troubleshooting
No. Problem Checkpoint Resolution
1 Lighting does not work
or flickers
① Check AC power cable
• Connect the power
② Check DC power cable connection
• Connect the DC power cable
③ Check after replacing LED assembly
• Replace LED assembly
④ Check after replacing SMPS
• Replace SMPS
⑤ If abnormal after checking above
• Replace product
2 Cannot adjust
the brightness
① Check connector for dimming
connection
• Replace connector for dimming
connection
② Check 0~10V interface cable
• Replace 0~10V interface cable
③ Check after replacing SMPS
• Replace SMPS
④ If abnormal after checking above
• Request to replace dimmer
3 Gap between product
and ceiling after
the installation
① Check if inner side of the ceiling
where product is assembled is even
• Rotate product to move spring
to location without gap
② Check if the spring is missing
from the heat sink
• After disassembling the product,
reinstall the product after assembling
the spring on the heat sink
③ Check if the tension of the spring
is sufficient
• Replace spring
④ Check the deformation of cover
and guide
• Replace cover and guide
⑤ If abnormal after checking above
• Connect facility personnel
or call center
4 Weld line or alien
particle is visible on the
surface of cover and
guide after the
installation
① Check the surface of the product
(Scratch, flow mark etc.)
• Replace cover and guide
5 Hot spot is visible
① Check after replacing cover and optic
• Replace cover and optic
② Check after replacing LED assembly
• Replace LED assembly
③ If abnormal after checking above
• Replace product
※ SMPS is supplied by LG and is replaced on 1:1 product basis.