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Trouble shooting
1、 Can not switch on：
no switch on
NO
Check 3.3V/12V/24V of power supply
Check PW
Only 3.3V
yes
Y
Check signal P—ON，
Check DC-DC
DIMBL—ON of main IC link
part,check
to PW
N
Y
Check the peripheral circuit
of mail IC,check solder of
Check reset
Check IIC bus
main IC,check data fo NVM
signal of main
and reset it
i
Check crystal frequence
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