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Trouble shooting
Product no power
Power
supply is
normal?
Yes
power cord
connection
is normal?
Yes
Power
PCBA's
output is
normal?
Yes
Control
PCBA
works?
No
The range of working voltage
is ??.
No
connection fault
No
Power PCBA failed
No
Control PCBA failed
Check the power supply.
Re-connect power cord
Replace Power PCBA
Replace Control PCBA
6
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