900-00277-01-001 Rev A
83
Service
6. Using a 5 mm hex (Allen) wrench, remove bolts for bus bars. See all items
H
in Figure 46.
Remove the
two bus bars
I
.
7. Remove the power module to be replaced. Pull upward to unsocket the module. See
J
in Figure 46.
Figure 46 Bus Bars and Power Modules
8. Replace the power module or modules. Perform all previous steps in reverse order.
Insert the power module into its slot. Ensure that the new board is slotted into the card guides
K
.
(See Figure 46
.
) Ensure it is seated firmly.
Replace bus bars
I
. Replace bolts
H
. Tighten to a torque value of 60 in-lb (6.8 Nm). See Figure 46
.
Replace the cage cover by attaching the keyhole fastener
G
and lowering the cover into place
F
.
Replace the cover screws
E
. See Figure 45
if necessary.
Replace the transformer cables and hardware
C
. See Figure 45
if necessary. Ensure that the
hardware is stacked in the following order.
Voltage sense wire (top)
Washer
Transformer
cable
Transformer
cable
(bottom)
Replace voltage sense connector
B
and current transducer connector
A
. See Figure 44 if necessary.
Replacement is complete.
H
J
J
I
H
H
H
H
H
I
K
K
