Lincoln Electric INVERTEC V275-S Service Manual page 56

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OUTPUT DIODE MODULES TEST (continued)
TEST PROCEDURE
1. Remove input power to the V275-S.
2. Locate the output terminals on the front
panel of the machine. See Figure F.7.
3. Remove any output cables and load from the
output terminals.
TROUBLESHOOTING & REPAIR
FIGURE F.7 - Machine Output Terminals
Negative Output
Terminal
V275-S
(Below code 11250 only)
Positive Output
Terminal
4. Using the analog ohmmeter test for more
than 200 ohms resistance between positive
and negative output terminals. Positive test
lead to the positive terminal; Negative test
lead to the negative terminal. See Figure
F.8.
NOTE: The polarity of the test leads is most
important. If the test leads polarity is not cor-
rect, the test will have erroneous results.
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