Lincoln Electric POWER WAVE 355/405 SVM159-A Service Manual page 90

F-48
CONTROL BOARD REMOVAL AND REPLACEMENT (continued)
PROCEDURE
1. Remove input power to the POWER WAVE
355/405.
2. Using a 5/16" nut driver remove the case wrap-
around cover.
3. Perform the Input Filter Capacitor Discharge
Procedure detailed earlier in this section.
Phillips Head
Screws
TROUBLESHOOTING & REPAIR
FIGURE F.17 - CONTROL BOARD LOCATION
S T
A T
U S
T H
E R
M A
L
W AR
NI
NG
RE
MO
TE
PO
W
ER
ON
OF
F
FIGURE F.18 CASE FRONT SCREW REMOVAL
STATUS ST TUS
_
Mounting Screws
POWER WAVE 355/405
Control Board
4. Locate the control board behind the front panel of
the machine. See Figure F.17.
5. Using a 5/16" nut driver remove the two screws
from the bottom of the front of the machine. See
Figure F.18.
THERMAL THERMAL
Phillips Head
+
5/16"
F-48
Screws