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TROUBLESHOOTING & REPAIR
MAIN TRANSFORMER (T1) VOLTAGE TEST (continued)
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PHASE ANGLE WINDING TEST
12.Test with an AC voltmeter for approximate- ly 66VAC at each phase winding. Test leads #201, #202, #203, and #204 per
Table F.1.
For control board #G2206, see Figure F.9 for lead locations.
For control board #G1575, see Figure F.10 for lead locations.
NOTE: If the main input supply voltage varies, the main transformer voltages will vary proportionately.
a.If the voltage is low, remove the plug or leads and recheck the voltage for 66VAC. If the reading is normal, the control board may be faulty. Replace the control board.
b.If one or more of the voltage tests are incorrect, check for loose or faulty wiring.
c.If the wiring is good, then the main transformer may be faulty. Replace the main transformer.
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