Lincoln Electric PRO-CUT 60 SVM104-A Service Manual page 64

F-23
10. Replace the terminal screw
snugly, a little more than finger
tight.
is mounted behind the Power
Board and the terminal screw
completes
connection.
11. Perform the following resi-
tance tests listed in Table F.1:
NOTE: Meter lead polarity must be
observed for these resistance tests.
H1
LEAD
H2
LEAD
C
LEADS
NEG
LEAD
#40
LEADS
PRO-CUT 60
TROUBLESHOOTING & REPAIR
TRANSISTOR MODULE TEST
The Transistor Module
the electrical
MOUNTING
SCREWS
H1
H2
4J20
2J20
C
NEG
#40
3J22
4J22
FIGURE F.9-Transistor Module Test Points
a. If a low resistance
measured in both polarities,
the transistor
"shorted." Replace the transis-
tor module, the Power Board,
and the Control Board.
b. If a high resistance
measured in both polarities,
the transistor
"open." Replace the transistor
module, the Power Board, and
the Control Board.
12. Replace all leads.
a. Torque screws to 17 in./lbs.
( 1.9 N.M.)
1J21
J21
G1
40
B
G2
J20
1J20
J22
1J22
2J22
is
module is
is
module is