Lincoln Electric 11141 Service Manual page 76

F-30
FIGURE F.6 – DC BUS POWER SUPPLY POWER SUPPLY PC BOARD
TEST PROCEDURE
1. Remove input power to the machine.
2. Using the 3/8" nut driver, remove the wrap-
around cover.
3. Locate the DC Bus Board. See Figure F.6.
4. Carefully apply input power to the Power
Wave 355M/405M.
®
FIGURE F.7 – DC BUS POWER SUPPLY POWER SUPPLY PC BOARD
J47
475
52
J46
66
TROUBLESHOOTING AND REPAIR
DC BUS BOARD TEST (CONTINUED)
DC BUS BOARD
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
51
477
65
POWER WAVE
WARNING
ELECTRIC SHOCK can kill.
High voltage is present when
input power is applied to the
machine.
5. Turn on the Power Wave
LED on the DC Bus Power Supply PC Board
should light.
J47
J46
® 355M/405M
F-30
® 355M/405M. The
Bus
Rectifier
Thermostat