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TROUBLESHOOTING & REPAIR
F-57 F-57
MULTI-WELD 350
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MULTI-WELD 350
LINCOLN
ELECTRIC
AMPS
VOLTS
A
V
E
L
E
C
T
R
O
D
E
IN
P
U
T
W
O
R
K
CHOPPE R TECHNOLOGY
+
-
3/16"
ALLEN-HEAD
SCREWS (2)
DIODE
MODULE
CAPACITOR
NEGATIVE
STRAP
MOUNTING
BOLTS (2)
9/64"
ALLEN-HEAD
SCREW (1)
FIGURE F.15 – DIODE MODULE MOUNTING DETAILS
DIODE MODULE REMOVAL AND REPLACEMENT
REMOVAL
Refer to Figure F.15.
1. Set the CC/CV power switch to OFF.
2. Remove input power to the machine.
ELECTRIC SHOCK can kill.
Disconnect input power before removing the
case cover and performing tests or making
repairs to the machine.
WARNING