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| TROUBLESHOOTING & REPAIR |
INPUT CONTACTOR COIL RESISTANCE AND
SUPPLY VOLTAGE TEST (CONTINUED)
FIGURE F.3 – INPUT CONTACTOR DETAILS
LEADS #303A #330
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COIL TEST PROCEDURE
1.Set the CC/CV power switch to OFF.
2.Remove input power to the machine.
WARNING
ELECTRIC SHOCK can kill.
Disconnect input power before removing the case cover and performing tests or making repairs to the machine.
3.Perform the Case Cover Removal proce- dure.
4.Perform the Power Module Capacitor Discharge procedure.
5.Locate the input contactor and coil leads #303A and #330. See Figure F.3.
6.Label and disconnect leads #303A and #330 at their
7.Check the coil resistance. Normal coil resistance is approximately 100 ohms. If the coil resistance is abnormally high or low, the contactor may be faulty. Replace the contactor.
8.Reconnect leads #303A and #330 to the coil leads.
