Machine Output Terminals - Lincoln Electric INVERTEC V350-PRO Service Manual

F-30
OUTPUT DIODE MODULES TEST (continued)
NEGATIVE
TERMINAL
TEST PROCEDURE
1. Remove input power to the V350-PRO.
2. Locate the output terminals on the front
panel of the machine. See Figure F.5.
3. Remove any output cables and load from the
output terminals.
TROUBLESHOOTING & REPAIR
FIGURE F.5 Machine Output Terminals
A
MPS
CONTROL
REMOTE REMOTE
LOCAL LOCAL
SELECT
MEMORY BUTT MEMOR BUTTON ON
SELECT KNOB SELECT
_
OUTPUT
V
OLTS
WELD TERMINALS
REMOTE REMOTE
ON ON
OUTPUT
SELECT
SELECT ATTRIBUTE SELECT TTRIBUTE
KNOB
ADJUST ADJUST ATTRIBUTE TTRIBUTE
+
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.6.
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.
V350-PRO
F-30