3
2
4
1
TM 9-4940-568-10
3-21
Table 3-1. Troubleshooting - CONT.
Malfunction
Test or Inspection
Corrective Action
MIG WELDER
1.
MIG WELDER DOES NOT OPERATE.
Step 1. Check if fault system warning light (1) is ON.
Wait for system to “Boot”.
Step 2. Check power switch (2) on ARC welder (3) is in ON position.
Position power switch to ON position.
Step 3. Check that process selector switch (4) on ARC welder (3) is in MIG position.
Position process selector switch to MIG position.
