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F-51
CONTROL BOARD REMOVAL AND REPLACEMENT (continued)
FIGURE F.20 - 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.19.
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.19.
TROUBLESHOOTING AND 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
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 com-
pletely, 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.20.
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.209.
11. Working your way down the left side of the board,
label and remove plugs #J4 and #J2. See Figure
F.20.
®
355M/405M
F-51
J10B
See
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