TM 9-4940-568-20
2-108
Table 2-19. Wire Feeder Welder Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRIC SHOCK can kill.
Follow all safety precautions.
Do not touch live electrical parts.
Turn OFF input power before servicing the machine unless otherwise noted.
Static sensitive devices.
Use static proof bags.
Use grounded wrist strap.
Use qualified personnel when testing or handling device.
1. UNIT IS COMPLETELY INOPERATIVE NOTHING FUNCTIONS.
Make sure all connections have been made to both the power source and wire feeder.
Verify connections are correct.
Make sure both the power source and wire feeder are turned ON.
Verify position of switch.
Make sure the power source output voltage is less than 140 VDC.
Verify power source voltage.
Check for a damaged power switch (S1).
Replace wire feeder.
Check for a damaged or blown input fuse (F1).
Replace fuse.