Replacement
This
section
covers
the
replacement
procedure
for
the
dc
power
distribution
panel.
1.
If
it
is
not
already
off,
remove
the
top
cover
of
the
dc
power
distribution
panel.
2.
Remove
the
shield.
3.
Place
the
dc
power
distribution
panel
in
position
on
the
top
of
the
rack,
and
install
the
four
mounting
screws.
4.
Route
and
attach
the
drawer
power
cables.
5.
Ensure
that
all
circuit
breakers
are
set
to
off.
6.
Be
sure
that
the
customer’s
dc
power
source
is
turned
off.
7.
Ensure
that
the
customer’s
service
provider
properly
connects
the
two
-48
V
dc
power
source
cables
to
the
-48
V
dc
bus
bars,
and
the
two
-48
V
dc
return
cables
to
the
-48
V
dc
return
bus
bars.
1
Front
of
Power
Distribution
Panel
6
B
Return
(-)
Power
Cable
2
A
-48
V
dc
(-)
Bus
Bar
7
B
-48
V
dc
(-)
Power
Cable
3
A
-48
V
dc
(-)
Power
Cable
8
B
Return
(-)
Bus
Bar
4
A
Return
(-)
Bus
Bar
9
B
-48
V
dc
(-)
Bus
Bar
5
A
Return
(-)
Power
Cable
8.
Replace
the
-48
V
dc
bus
bar
shield
(insulation).
9.
Replace
the
top
cover
of
the
dc
power
distribution
panel.
34
7014
Model
T00,
and
Model
T42
Service
Guide
Summary of Contents for THINKPAD T42 -
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