FL tube switch periphery check
Is the potential of Q106 1, 2, 3 pins 5V?
Check the 5V line on FL board.
(for disconnection, GND short, etc.)
Yes
Is the potential of Q106 4pin around 0V?
No
No
No
Is the CN100 10pin voltage 5V?
Replace the Q106
Yes Yes
R132 is open. pattern is broken, or
short with other pattern
Replace the FL-MAIN FFC.
If not effective, replace the Main board
No
10pin of CN100 becomes 0V when Dimmer button on
remote controller is pressed several times
Yes
Normal just under effect of Dimmer
Flowchart No.3
FL Section
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