Lincoln Electric SVM138-A Service Manual page 127

F-63
T1 TRANSFORMER REMOVAL AND REPLACEMENT (continued)
T1
TRANSFORMER
MOUNTING
SCREWS
11. Using the 5/16" wrench, remove the nuts
and lockwashers mounting the terminal strip
to the mounting panel. See Figure F.21.
12. Remove the terminal strip and set it aside.
13. Using the 5/16" wrench, remove the two
nuts and washers from the T1 transformer
mounting screws.
14. Remove the transformer mounting screws
and the T1 transformer. This may require
gently prying up the control PC board
mounting panel. Be sure to clear all leads.
REPLACEMENT
15. Position the T1 transformer and use the
5/16" wrench to attach it with the two nuts
and washers.
16. With the 5/16" wrench, mount the terminal
strip.
TROUBLESHOOTING & REPAIR
FIGURE F.21 – TERMINAL STRIP MOUNTING
LN-9 GMA Wire Feeder
TERMINAL
STRIP
17. Plug the 1CR relay into the power PC board
and attach the clip. See Figure F.20.
18. Mount the power PC board mounting panel
with the two phillips head screws and 11/32
nut.
19. Connect leads #601 and #602 at the lead
splices. See Figure F.19.
20. Connect leads #526 AND #527 at their ter-
minals on the power PC board. See Figure
F.18.
21. Solder lead #31 to the R1 (2 ohm) resistor.
See Figure F.17.
22. Connect primary lead #532 to its power PC
board terminal.
23. Close the left cover and reattach the screws.
F-63