6.
Pull
the
DASD
board
assembly
out
until
it
slides
off
the
guide
pins,
then
rotate
the
DASD
board
assembly
90
degrees.
Note
the
locations
of
the
cables
that
are
located
on
the
backside
of
the
board
assembly,
and
then
remove
them.
Note:
Both
ends
of
the
ribbon
cables
are
marked
LH
or
RH
,
indicating
that
one
end
of
the
cable
is
plugged
in
to
either
the
left-hand
(DB1)
or
right-hand
(DB2)
DASD
board
assembly.
The
other
end
of
the
cable
is
plugged
in
to
either
the
left-most
(LH)
or
right-most
(RH)
DASD
controller
card.
The
cables
will
crisscross
in
the
center
of
the
tower.
Figure
1.
Device
board
cabling
7.
Remove
the
DASD
board
assembly.
8.
Install
the
DASD
board
assembly
by
reversing
the
remove
procedure.
After
exchanging
an
item,
go
to
This
ends
the
procedure.
FC
5094,
FC
9094
-
Device
board
-
DB3
For
use
by
authorized
service
providers.
Use
this
procedure
to
remove
or
replace
the
device
board
-
DB3
in
an
FC
5094
or
FC
9094.
To
remove
or
replace
the
device
board
-
DB3:
1.
Power
off
the
expansion
tower
(see
2.
Disconnect
the
power
cord
from
the
expansion
tower.
3.
Open
the
rear
cover.
See
4.
From
the
rear
of
the
expansion
tower
do
the
following:
a.
Remove
the
EMC
access
plate
that
is
located
directly
above
the
tower
card
enclosure.
Press
the
surfaces
of
the
two
latching
mechanisms
together
and
tilt
the
top
of
the
cover
away
from
the
frame
to
remove
it.
b.
Remove
the
cables
from
the
disk
unit
controller
cards
(IOAs)
that
are
located
inside
the
PCI
card
enclosure
and
note
their
locations.
Analyze
hardware
problems
179
Summary of Contents for 270
Page 2: ......
Page 12: ...x Hardware Remove and Replace Part Locations and Listings...
Page 279: ...Figure 3 CCIN 2881 with pluggable DIMM Analyze hardware problems 267...
Page 281: ...Figure 6 Models 830 SB2 with FC 9074 HSL and SPCN locations Analyze hardware problems 269...
Page 283: ...Figure 1b Model 840 SB3 processor tower dual line cord Analyze hardware problems 271...
Page 294: ...01 gif port and LED locations 282 Hardware Remove and Replace Part Locations and Listings...
Page 295: ...s src rzaq4519 gif locations Analyze hardware problems 283...
Page 483: ...Table 1 Cover assembly FC 5095 Expansion I O Tower Analyze hardware problems 471...
Page 614: ...602 Hardware Remove and Replace Part Locations and Listings...
Page 618: ...606 Hardware Remove and Replace Part Locations and Listings...
Page 621: ......
Page 622: ...Printed in USA SY44 5917 02...