Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B Service Manual page 160

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INTERNAL AND AUXILIARY SUPPLY VOLTAGE TEST (continued)
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
TROUBLESHOOTING & REPAIR
POWER WAVE 450
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.
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