Lincoln Electric INVERTEC SVM101-B Service Manual page 70

F-40
OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT TEST (cont.)
306
275F
7. Test for 0 VDC between leads 311 and 313 on
Protection Board.
a. If 0-1 VDC is present, the Protection Board is
OK. Go to step 8.
b. If 15 VDC is present, go to step 11.
TROUBLESHOOTING & REPAIR
FIGURE F.17 — PROTECTION BOARD TEST POINT
L7915
313
J8
311
V300-I
PROTECTION
F-40
J15