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TROUBLESHOOTING AND REPAIR | ||
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TRIGGER TRANSFORMER TEST (continued)
FIGURE F.2 – TRIGGER TRANSFORMER TEST POINTS
6 5 4
RED
3 2 1
BLACK BLACK
RELAY
BOARD
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TEST PROCEDURE
1.Remove input power to the
2.Using the 5/16 in. nutdriver, remove the screws holding the left side cover assembly.
3.Disconnect the Molex plug from the
4.Apply power (115VAC) to the black primary transformer leads, pins 2 and 3.
5.Using the voltmeter, check for approximately 24VAC at the red secondary leads, pins 1 and 4.
6.If 115VAC is applied to the black primary leads (2 and 3) and the secondary voltage (red leads 1 and 4) is missing or low, the trig- ger transformer may be faulty. Replace.
7.Reconnect the Molex plug to the underside of the relay board.
8.Install the screws that secure the left side cover assembly.
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