Troubleshooting & repair, T1 transformer test (continued) – Lincoln Electric LN-9 SVM127-A User Manual

Page 83

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TROUBLESHOOTING & REPAIR

F-25

F-25

LN-9 Wire Feeder

6. Using the volt/ohmmeter, check for 10VAC at

secondary leads #601 and #602. Typically,
these leads are yellow. Place the probes at
the lead splices. See Figure F.2.

7. With 115VAC applied to the primary leads

#532 and #31, if either or both of the sec-
ondary voltages are missing or low the T1
transformer may be faulty. Replace the
transformer.

8. After the test is completed, disconnect the

115VAC from the T1 transformer primary
leads. Reconnect lead #532 to the power
PC board terminal. Close the left side cover
assembly and re-assemble the screws.

T1 TRANSFORMER TEST

(continued)

FIGURE F.2 – SECONDARY LEADS #601 AND #602 AT LEAD SPLICES

LEAD 601

LEAD 602