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TROUBLESHOOTING & REPAIR
DC BUS BOARD TEST (CONTINUED)
FIGURE F.5 – DC BUS POWER SUPPLY POWER SUPPLY PC BOARD
DC BUS BOARD
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STATUS
THERMAL
LINCOLN
ELECTRIC
WARNING
REMOTE
POWER
ON
OFF
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TEST PROCEDURE
1.Remove input power to the machine.
2.Using the 3/8” nut driver, remove the wrap- around cover.
3.Locate the DC Bus Board. See Figure F.5.
4.Carefully apply input power to the Power Wave 355/405.
WARNING
ELECTRIC SHOCK can kill.
High voltage is present when input power is applied to the machine.
5.Turn on the Power Wave 355/405. The LED on the DC Bus Power Supply PC Board should light.
FIGURE F.6 – DC BUS POWER SUPPLY POWER SUPPLY PC BOARD
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J47
475
52
J46
| J47 |
51 | Bus |
Rectifier | |
477 |
|
| |
| Thermostat |
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66 | 65 |
