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The mainboard 15.14.244 contains the input rectifier bridge and the forward power converter.
Fault Possible problem Suggestions
The main switch cuts off
The welding machine doesn’t deliver the
maximum power
Rectifier bridge is broken
The forward converter can have some pro-
blems
Check the rectifier bridge according to the
procedure on page 25. If you must replace
the rectifier bridge, following the procedure
on page 26.
Chek the power MOSFETs according to the
procedure on page 25. If the mainboard
15.14.244 is broken, change the mainboard
15.14.244 according to the procedure on
page 27
10.5 - POWER PARTS CONTROL
OPERATION FLOW SIGNAL
OPERATION FLOW SIGNAL
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