Troubleshooting & repair, Main transformer (t1) voltage test (continued) – Lincoln Electric IDEALARC DC-655 User Manual
Page 66
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TROUBLESHOOTING & REPAIR
F-24
F-24
IDEALARC DC-655
MAIN TRANSFORMER (T1) VOLTAGE TEST (continued)
FIGURE F.7 - MAIN TRANSFORMER SECONDARY LEADS TO
COMMON BUS VOLTAGE CHECK
9.
Test with an AC voltmeter for approximately
55 VAC from each of the six main trans-
former secondary leads to the common bus
connected to the output choke. See Figure
F.7.
NOTE: The secondary voltages will vary if the
input line voltages vary. If any one or more of the
voltage checks are incorrect, check for loose or
faulty connections. See the Wiring Diagram. If
the leads and connections are OK, the main
transformer may be faulty.
MAIN
TRANSFORMER
SECONDARY
LEADS (6)
CHOKE
COMMON
BUS
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