Lincoln Electric PRO-CUT 55 SVM140-A Service Manual page 52

F-15
TEST PROCEDURE
1. Remove main input power to the machine.
2. Perform
Discharge Procedure detailed earlier in
this section.
3. Locate the input rectifier (D1) and lead loca-
tions. See Figure F.2.
C
B
A
TROUBLESHOOTING & REPAIR
INPUT RECTIFIER TEST (continued)
the Input Filter Capacitor
FIGURE F.2 – INPUT RECTIFIER AND LEADS
PRO-CUT 55
4. With the phillips head screw driver, remove
leads #207, 207A and #209 from the rectifi-
er.
5. Use the analog ohmmeter to perform the
tests detailed in Table F.1. See the Wiring
Diagram.
#207
#207A
#209 (+)
F-15
(-)