Lincoln Electric POWER WAVE 355/405 SVM159-A Service Manual page 62

F-20
TEST PROCEDURE
1. Remove input power to the POWER
WAVE 355/405 machine.
2. Using a 5/16" nut driver, remove the case
wraparound cover.
3. Perform the
Procedure detailed earlier in this section.
4. Locate the input rectifier and associated
leads. See Figure F.3.
5. Carefully remove the silicone sealant
from leads 207, 207A, and 209.
Small Lead "H1"
To Auxiliary Transformer
TROUBLESHOOTING & REPAIR
INPUT RECTIFIER TEST (CONTINUED)
Capacitor Discharge
Figure F.3 Input Rectifier
3/16" ALLEN
BOLTS
C
B
A
FRONT
POWER WAVE 355/405
6. Using a phillips head screwdriver,
remove leads 207, 207A, and 209 from
the input rectifier.
7. Use the analog ohmmeter to perform the
tests detailed in Table F.2.
Wiring Diagram.
8. Visually inspect the three MOV'S for
damage (TP1,TP2,TP3). Replace if nec-
essary.
To Circuit Breaker
REAR
See the
#207
#207A
#209
Small Lead "A"
F-20