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http://www.jdwxzlw.com/?fromuser=华盛维修
No VFD display
No VFD display
Check whether the
voltage +12V/+5V on the
front board is normal
Check
voltage
F1&VFD F2 is AC3V
Check
voltage -24V is normal
Replace U2&VFD.
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Go
Yes
whether
the
between
VFD
Yes
whether
the
4-5
No
Fix the connection power board
CN1& front board JP1
No
Check DC12V to AC 3V switch circuit
No
Check the FB1 on the front board
Trouble Shooting Chart
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