v
Models
840
and
SB3
(See
page
v
Models
870
and
890
(See
page
Instructions
for
Model
270
v
For
Model
270
-
Processor
Feature
Code
22A2,
22A4,
22A5,
2301,
2302,
23E7,
23F0,
23F1,
2422,
2452:
Any
memory
card
in
slots
MB1-A
through
MB1-H
may
be
the
failing
item.
See
to
identify
the
locations,
type
number,
and
remove
and
replace
procedure
for
the
memory
cards.
v
For
Model
270
-
Processor
Feature
Code
22A7,
22A8,
22AA,
22AB,
23F4,
23F5,
2423,
2424,
2454:
Choose
from
the
following
options:
–
If
there
is
no
memory
card
in
slot
location
M01,
then
any
one
of
the
memory
expansion
cards
on
the
processor
card
in
location
M02
may
be
the
failing
item.
See
the
to
identify
the
locations,
type
number,
and
remove
and
replace
procedure
for
the
memory
expansion
cards.
–
If
there
is
a
memory
card
in
slot
location
M01,
then
any
one
of
the
memory
expansion
cards
in
the
memory
card
may
be
the
failing
item.
Or
the
memory
card
in
slot
M01
may
be
the
failing
item.
See
to
identify
the
locations,
type
number,
and
remove
and
replace
procedure
for
the
memory
expansion
cards
and
memory
card.
Instructions
for
Models
800
and
810
Choose
from
the
following
options:
v
For
Model
810
systems
with
processor
features
7428,
7429,
or
7430:
–
If
there
is
no
memory
card
in
slot
location
M01,
then
any
one
of
the
memory
expansion
cards
on
the
processor
card
in
location
M02
may
be
the
failing
item.
See
to
identify
the
locations,
type
number,
and
remove
and
replace
procedure
for
the
memory
expansion
cards.
–
If
there
is
a
memory
card
in
slot
location
M01,
then
any
one
of
the
memory
expansion
cards
in
the
memory
card
may
be
the
failing
item,
or
the
memory
card
in
slot
M01
may
be
the
failing
item.
See
to
identify
the
locations,
type
number,
and
remove
and
replace
procedure
for
the
memory
expansion
cards
and
memory
card.
v
For
other
Models
800
and
810
systems,
use
the
SRC
and
the
table
below
to
determine
the
location
of
the
failing
memory
card.
See
to
identify
the
part
number,
and
a
link
to
the
remove
and
replace
procedure.
Table
1.
Memory
locations
for
Models
800
and
810
Reference
code
Location
of
failure
B427
x010
memory
in
location
MB1
-
A
B427
x011
memory
in
location
MB1
-
B
B427
x012
memory
in
location
MB1
-
C
B427
x013
memory
in
location
MB1
-
D
B427
x014
memory
in
location
MB1
-
E
B427
x015
memory
in
location
MB1
-
F
B427
x016
memory
in
location
MB1
-
G
B427
x017
memory
in
location
MB1
-
H
B427
x00A
memory
in
location
MB1
-
A,
B
B427
x00B
memory
in
location
MB1
-
C,
D
B427
x00C
memory
in
location
MB1
-
E,
F
B427
x00D
memory
in
location
MB1
-
G,
H
B427
x009
memory
in
any
one
of
the
locations
given
above
Analyze
hardware
problems
279