95
TROUBLESHOOTING
4-2-17. If Inverter PCB Power is not supplied
- See the operations and
reference in this manual
when check the MAIN PCB.
Start
Replace FUSE & check the root cause
Is the fuse on AC
110V/220V down?
Yes
No
Check the wire connection
Is 110V/220V
applied between both end of
inverter PCB CN01?
No
Yes
Replace FUSE - 250V 5A
Is the fuse on MAIN
PCB down?
Yes
No
Check PCB PATTERN & Replace BD1
Is DC 300V
applied between both ends of
BD1+,-?
No
Yes
Replace PCB ASS’Y
Is DC300V
applied to HYBRID
IC #10 PIN?
No
Yes
1) Replace HYBRID IC(IC3:BP5047B15)
2) Replace PCB ASS’Y
Is DC15V
applied to HYBRID
IC #1 PIN?
No
Yes
Replace REG1 (KA78L05)
Is 5V applied to C104?
No
Yes
Normal
Replace PCB ASS’Y
Is there any
PCB soldering short or
breakage?
No
Yes
At the INVERTER PCB Power, AC
110V/220V power and over DC 300V
of high-voltage are applied. Please take
care of yourself when repair and
measure.
Caution
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