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TROUBLESHOOTING AND REPAIR
FAN CONTROL AND MOTOR TEST (continued)
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TEST PROCEDURE
1.Remove the input power to the POWER WAVE 355/405 machine.
2.Using the 5/16” nut driver, remove the case wraparound cover.
3.Perform the Input Filter Capacitor Discharge
Procedure.
4.Locate plug J22 on the main switch board. Do not remove the plug from the board. See Figure F.14.
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FIGURE F.14 PLUG J22 LOCATION
J22
J21 | J20 |
5. Carefully apply the correct input power to the | 6. Carefully check for 115VAC at plug J22 |
machine. | to J22 |
| F.15. WARNING: HIGH VOLTAGE IS PRE- |
| SENT AT THE MAIN SWITCH BOARD. |
FIGURE F.15 PLUG J22
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Fan Lead
Lead 31B(C) 
1
3
2 
Lead 32A
4 | Fan Lead |
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