Lincoln Electric POWER WAVE 355/405 SVM159-A Service Manual page 91

F-49
CONTROL BOARD REMOVAL AND REPLACEMENT (continued)
FIGURE F.19 - CONTROL BOARD ALL PLUG LOCATIONS
S T
A T
U S
W A
R N
IN
G
R E
M O
T E
CAUTION
Observe static precautions detailed in PC
Board Troubleshooting Procedures at the
beginning of this section.
6. Using a phillips head screwdriver remove the two
screws and their washers from above and below
the input power switch. See Figure F.18.
7. Using a phillips head screwdriver remove the four
screws from around the two welder output termi-
nals on the front of the machine. See Figure F.18.
TROUBLESHOOTING & REPAIR
J6
J7
J5
J4
J2
T H
E R
M A
L
P O
W
E R
O N
O F
F
POWER WAVE 355/405
J8
J9
J10A
8. The front of the machine may now gently be pulled
forward to gain access to the Control Board.
Note: The front of the machine cannot be removed
completely, only pulled forward a few inches.
9. Beginning at the right side of the control board
remove plugs J10A and J10B. Note: Be sure to
label each plugs position upon removal.
Figure F.19.
10. Working your way across the top of the board
from right to left, label and remove plugs #J9, #J8,
#J7, #J6, and #J5. See Figure F.19.
11. Working your way down the left side of the board,
label and remove plugs #J4 and #J2. See Figure
F.19.
F-49
J10B
See