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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
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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