Lincoln Electric PRO-CUT 55 Service Manual page 67

F-29
(T2) AUXILIARY TRANSFORMER TEST (continued)
TEST POINT
Brown (8J21)
7. If the correct test voltages are present, the
auxiliary transformer is good.
8. If any of the voltages are missing or very low
with the proper primary voltage applied, the
auxiliary transformer may be faulty.
TROUBLESHOOTING & REPAIR
TABLE F.6 - J21 AND J22 VOLTAGES
H1 (1J22)
H1 (1J22)
H1 (1J22)
Red (2J21)
Blue (9J21)
Blue (4J21)
TEST POINT
H2 (4J22)
H4 (3J22)
H5 (6J22)
Brown (3J21)
Red (6J21)
White (5J21)
White (5J21)
9. If the auxiliary transformer tests good but it
does not function when connected to the
Pro-Cut 55, check the harness wiring to the
auxiliary transformer.
Diagram.
10. When finished with the test, replace plugs
21 and 22 and the case wraparound.
EXPECTED VOLTAGE
200 - 208VAC
380 - 415VAC
440 - 460VAC
12VAC
24VAC
18VAC
18VAC
See the Wiring
F-29