Lincoln Electric PRO-CUT 55 Service Manual page 86

F-48
OUTPUT POWER BOARD REMOVAL & REPLACEMENT (continued)
4. Using the 7/16" wrench, remove leads X4, X2
and B21 from the output power board.
5. Remove plugs J30, J31, J32 and J33 from
the output power board.
6. Remove leads X20 and X40 from the output
power board.
7. Using the phillips head screw driver, remove
the two screws from the lower left and right
corners of the output power board.
8. Using the 3/16" allen head wrench, remove
the four socket screws mounting the output
power board to the heat sink.
TROUBLESHOOTING & REPAIR
FIGURE F.22 – OUTPUT BOARD LEAD LOCATIONS
x4
G3326 - [ ] PRO-CUT 55 OUTPIUT
x2
B21
J33
x40
B1
B2
x20
J31
J32
J30
9. Carefully remove the output power board
from the heat sink.
CAUTION
Be sure to follow the recommended static-free
methods for handling printed circuit boards.
Failure to do so can result in permanent damage
to the equipment.
F-48