Models
840/SB3
-
Time
of
day
(TOD)
battery
Models
840/SB3
processor
tower
(with
non-dual
line
cords)
-
AC
box
(A01)
For
use
by
authorized
service
providers.
Use
this
procedure
to
remove
or
replace
the
AC
box
(A01)
in
a
Model
840/SB3
processor
tower
(with
non-dual
line
cords).
To
remove
or
replace
the
AC
box
(A01):
1.
Power
off
the
system.
See
2.
Disconnect
the
ac
power
cord.
3.
Open
the
rear
cover.
See
4.
Refer
to
and
perform
the
following
steps.
a.
Remove
the
screws
that
hold
the
AC
box.
b.
Remove
the
AC
box.
5.
Install
the
new
AC
box
by
reversing
the
removal
procedure.
After
exchanging
an
item,
go
to
This
ends
the
procedure.
Models
840/SB3
Processor
Tower
(with
dual
line
cords)
-
AC
box
(A01,
A03)
-
concurrent
maintenance
For
use
by
authorized
service
providers.
Use
this
procedure
to
remove
or
replace
the
AC
box
(A01,
A03)
on
the
Models
840/SB3
Processor
Tower
(with
dual
line
cords)-
using
concurrent
maintenance.
To
remove
or
replace
the
AC
box
(A01,
A03):
1.
Swing
open
the
lower
rear
cover.
See
Perform
the
following
steps
from
the
rear
of
the
system.
2.
Disconnect
the
ac
power
cord
for
the
AC
box
that
you
are
working
on.
3.
Remove
the
four
screws
holding
the
AC
box
that
you
are
working
on
in
place.
Refer
to
4.
Remove
the
AC
box.
5.
Prior
to
installing
the
new
AC
box,
verify
that
the
LED
on
the
concurrent
maintenance
adapter
card
is
on.
Is
the
LED
on?
v
Yes
:
Install
the
new
AC
box
by
reversing
this
procedure.
This
ends
the
procedure.
v
No
:
You
must
power
down
the
system
and
replace
the
concurrent
maintenance
adapter
card
before
installing
the
new
AC
box.
a.
Power
off
the
system.
This
is
no
longer
a
concurrent
maintenance
operation.
See
b.
Remove
the
two
screws
holding
the
concurrent
maintenance
adapter
card
in
place.
c.
Install
the
new
concurrent
maintenance
adapter
card
and
tighten
the
two
screws.
d.
Install
the
new
AC
box
and
tighten
the
four
screws.
e.
Power
on
the
system.
This
ends
the
procedure.
Model
830
with
FC
9074,
Model
840
with
FC
9079
or
FC
8079
(with
dual
line
cords)
-
AC
module
(A01,
A02)
For
use
by
authorized
service
providers.
74
Hardware
(Remove
and
Replace;
Part
Locations
and
Listings)
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...