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③
Background is not/Background is
always on
Check the power board 24Vsupply
with
Check and repair logic control
circuit
Connect the wire cluster again
Check it on/standly CPUbackground
Always on
light control pin is changed
without
Power board is damaged, replace
Check it inverter background
without
light control pin is changed
with
Check it connecting wire is loosen
with
with
Check and repair CPU relevant
without
circuit
without
The screen is damaged,replace
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