58
7.3. Electrical system
PROBLEM
CAUSE
SOLUTION
The lamp cannot light when
the switch is turned on
No power supply
Check the connection of the power
cord
The connector of LED lamp is not
properly inserted into the circuit board
Insert it correctly
The LED lamp is broken
Replace the lamp
The lamp burns out suddenly
Use an unspecified lamp
The voltage is too high
Use the specified lamp to replace,
if the problem is not solved, contact
your customer service
The brightness is not enough
Using an unspecified lamp
The voltage is too low
Use the specified lamp
Increase the voltage
The LED lamp flickers or the
brightness varies
The lamp is going to burn out
Replace it
The connector of LED lamp is not
properly inserted into the circuit
board
Check and insert it firmly
7
TROUBLE SHOOTING GUIDE
Summary of Contents for NE620T
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