b.
Slowly
pull
the
lever
away
from
the
chassis
to
remove
the
power
supply
and
fan
unit.
(You
do
not
have
to
actually
remove
them
from
the
power
supply
and
fan
unit
bays.)
Note:
The
lever
rotates
upward
or
downward
90°,
depending
on
whether
the
power
supply
and
fan
unit
you
are
removing
is
in
the
right
or
left
power
supply
and
fan
unit
bay.
c.
Repeat
steps
and
for
the
other
power
supply
and
fan
unit.
8.
Label
the
EV-DDM
CRUs
so
you
know
their
physical
location
in
the
midplane.
9.
Remove
the
EV-DDM
CRUs.
See
the
IBM
System
Storage
DS4200
EXP420
Storage
Expansion
Enclosure
Installation,
User’s
and
Maintenance
Guide
for
instructions.
Attention:
Do
not
stack
EV-DDM
CRUs
on
top
of
each
other.
Protect
the
EV-DDM
CRUs
from
vibrations
or
sudden
shocks.
10.
Use
a
#1
Phillips
screwdriver
to
loosen
the
four
front
cage
frame
screws
on
the
midplane,
as
shown
in
11.
Grab
the
blue
handle
in
the
center
of
the
front
cage
frame
and
pull
it
outward
to
slide
the
front
cage
frame
out
approximately
two
inches.
Grab
the
two
sides
of
the
front
cage
frame
and
remove
it
from
the
chassis.
12.
Unpack
the
new
front
cage
frame
with
the
midplane.
Save
the
packaging
materials
in
case
you
need
to
return
it.
13.
Insert
the
new
midplane
by
aligning
it
with
the
DR550
Expansion
Drawer
front
opening
and
slowly
sliding
it
into
the
DR550
Expansion
Drawer
chassis.
Make
sure
that
the
front
cage
frame
EMC
gaskets
do
not
snag
between
the
frame
and
chassis.
14.
Tighten
the
four
front
cage
frame
screws.
15.
Insert
the
EV-DDM
CRUs.
Be
sure
you
insert
them
in
the
correct
slots.
Use
the
labels
you
put
on
them
before
you
removed
them
to
guide
you.
16.
Reinsert
the
ESMs
and
reconnect
the
fibre
channel
cables.
810midpl
Front cage frame screws
Front cage frame screws
Figure
45.
Replacing
a
midplane
Chapter
12.
Field
replacement
125
Содержание DR550
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Страница 178: ...DR2 power cabling Figure 77 DR2 power cabling primary rack 150 DR550 Version 4 5 Problem Determination and Service Guide...
Страница 179: ...Figure 78 DR2 power cabling primary rack and expansion rack Appendix A DR1 and DR2 cabling diagrams 151...
Страница 180: ...Figure 79 DR2 power cabling expansion rack 152 DR550 Version 4 5 Problem Determination and Service Guide...
Страница 185: ...DR1 power cabling Figure 88 DR1 Power Cabling Appendix A DR1 and DR2 cabling diagrams 157...
Страница 186: ...Figure 89 DR1 Power Cabling 158 DR550 Version 4 5 Problem Determination and Service Guide...
Страница 190: ...Figure 95 Storage Controller port identification 162 DR550 Version 4 5 Problem Determination and Service Guide...
Страница 191: ...Figure 96 Expansion Drawer port identification Appendix A DR1 and DR2 cabling diagrams 163...
Страница 192: ...Figure 97 Power Control Assembly PCA port identification 164 DR550 Version 4 5 Problem Determination and Service Guide...
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Страница 258: ...Printed in USA GA32 0576 00...
