TROUBLESHOOTING & REPAIR
F-56 F-56
SQUARE WAVE TIG 275
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MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY
REMOVAL AND REPLACEMENT (continued)
FIGURE F.18 – TRANSFORMER CONNECTIONS
10. Using the 7/16” wrench, disconnect the
transformer primary leads from the recon-
nect studs. See the Wiring Diagram and
Figure F.18. Label the leads for reassembly.
11. Using the 5/16” nut driver, remove the one
screw from the lower front corner of the glas-
tic reconnect panel.
12. Remove the H1 capacitor lead from the
capacitor terminal.
13. Using the 5/16” nut driver, remove the four
screws from the glastic choke baffles.
14. Remove the glastic reconnect panel by lifting
up on the choke baffle and sliding the recon-
nect panel away from the machine. (Clear
all leads.)
15. Clear the glastic choke baffle and associated
leads for transformer removal.
16. With the 3/8” wrench, disconnect the H1 pri-
mary lead from the input line switch.
17. Using the 1/2” wrench, disconnect the choke
lead from the polarity switch. See the Wiring
Diagram and
Figure F.19.
Label for
reassembly.
18. Using the 1/2” wrench, disconnect the X1
transformer secondary lead from the polarity
switch. Label for reassembly. See
Figure
F.19
.
19. Using the 3/8” nut driver, remove the screw
holding the left side internal panel to the
metal lift bail baffle. See Figure F.18.
