Troubleshooting & repair – Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B User Manual
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INTERNAL AND AUXILIARY SUPPLY VOLTAGE TEST (continued)
TROUBLESHOOTING & REPAIR
13. With the Volt/ohmmeter, check the follow-
ing leads for continuity:
A. Between the Protection Board and Wire
Feeder 2 Receptacle:
Lead #32D
Between J34 - pin 5 and P82
- pin A
Lead #32E
Between J34 - pin 6 and P82
- pin I
Lead #42C
Between J34 - pin 3 and P82
- pin K
Lead #102D Between J34 - pin 4 and P82
- pin C
Lead #31C
Between J34 - pin 1 and P82
- pin J
Lead #106A Between J34 - pin 7 and P82
- pin D
B. Between the Protection Board and Wire
Feeder 1 Receptacle:
Lead #32B Between J34 - pin 12 and
P83 - pin A
Lead #32C Between J34 - pin 13 and
P83 - pin I
Lead #42B Between J34 - pin 10 and
P83 - pin K
Lead #102B Between J34 - pin 11 and
P83 - pin C
Lead #31B
Between J34 - pin 8 and P83
- pin J
Lead #105A Between J34 - pin 14 and
P83 - pin D
C. Between the protection board and the
square wave TIG protection board:
Lead #296
Between J38 - pin 3 and J92
- pin 6
14. After the test is completed and the prob-
lem successfully repaired, disconnect
input power to the machine.
15. Connect the five leads to main input con-
tactor CR1 and insert plug J30 into the
protection board.
16. Install the machine case sides and top.
17. Install the handle and the lift bail rubber
gasket.
POWER WAVE 450