Troubleshooting & repair, Output diode modules test (continued), Test procedure – Lincoln Electric INVERTEC V350-PRO SVM152-A User Manual
Page 68: F-30, Negative output terminal positive output terminal
TROUBLESHOOTING & REPAIR
F-30
F-30
V350-PRO
OUTPUT DIODE MODULES TEST (continued)
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.
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.
FIGURE F.5 Machine Output Terminals
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O N
O N
HO
HOT ST
T START
WELD MODE
WELD MODE
ARC CONTR
ARC CONTROL
CC-STICK SOFT
CC-STICK SOFT
CC-STICK CRISP
CC-STICK CRISP
TIG GT
TIG GTAW
CV
CV-WIRE
-WIRE
CV
CV-FLUX CORED
-FLUX CORED
-4
-4
+4
+4
+2
+2
-2
-2
0
-6
-6
+6
+6
-10
-10
SOFT
SOFT
CRISP
CRISP
+10
+10
-8
-8
+8
+8
5
4
3
2
1
0
6
10
10
9
8
7
SELECT
SELECT
REMO
REMOTE
ON
ON
REMO
REMOTE
LOCAL
LOCAL
m
WELD
WELD TERMINALS
TERMINALS
OUTPUT
OUTPUT
CONTR
CONTROL
OL
SELECT
SELECT
SELECT
SELECT
MPS
MPS
A
OL
OLTS
TS
V
NEGATIVE
OUTPUT
TERMINAL
POSITIVE
OUTPUT
TERMINAL