Lincoln Electric 11141 Service Manual page 111

F-65
DC BUS BOARD REMOVAL AND REPLACEMENT (continued)
Phillips Head
Screws
9. Label and remove two thermostat leads and four
leads from the bus rectifier.
10. Using a 3/8" open end wrench, remove the three
DC Bus Board mounting nuts. See Figure F.30.
11. Replace the DC Bus Board.
12. Secure the new DC Bus Board in its proper location
using the 3/8" mounting nuts.
3/8" Mounting
Nuts
TROUBLESHOOTING AND REPAIR
FIGURE F.29 – CASE FRONT SCREW REMOVAL
STA A TUS ST TUS
_
Mounting Screws
FIGURE F.30 – CASE FRONT SCREW REMOVAL
POWER WAVE
THERMAL THERMAL
+
5/16"
13. Reconnect previously removed leads to their prop-
er locations.
14. Replace the four phillips head screws mounting the
two welder output terminals to the front of the
machine.
15. Replace the two phillips head screws from above
and below the input power switch.
J47
J46
® 355M/405M
Phillips Head
Screws
Bus
Rectifier
Thermostat
F-65