Lincoln Electric 355M Manuel d'utilisateur Page 74

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Vue de la page 73
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.5.
4. Carefully apply input power to the Power
Wave 355M/405M.
ELECTRIC SHOCK can kill.
High voltage is present when
input power is applied to the
machine.
5. Turn on the Power Wave 355M/405M. The
LED on the DC Bus Power Supply PC Board
should light.
TROUBLESHOOTING AND REPAIR
F-28 F-28
POWER WAVE 355M/405M
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC
DC BUS BOARD
W
A
R
N
I
N
G
R
E
M
O
T
E
P
O
W
E
R
O
F
F
O
N
S
T
A
T
U
S
T
H
E
R
M
A
L
L
I
N
C
O
L
N
E
L
E
C
T
R
I
C
FIGURE F.5 – DC BUS POWER SUPPLY POWER SUPPLY PC BOARD
FIGURE F.6 – DC BUS POWER SUPPLY POWER SUPPLY PC BOARD
DC BUS BOARD TEST (CONTINUED)
J46
J47
475
52
51
477
66 65
L11078-1
J46
J47
Thermostat
Bus
Rectifier
WARNING
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