JTPORT
For
use
by
authorized
service
providers.
There
is
a
problem
with
the
J-Tag
connection.
If
a
B1xx
4660
SRC
sent
you
here,
the
JTAG-A
external
cable
may
be
failing.
For
information
about
the
JTAG
cable,
see
the
page.
If
a
B4xx
xEB0
SRC
sent
you
here,
the
following
procedure
will
help
you
determine
the
failing
item.
1.
If
there
is
an
entry
in
the
Service
Action
Log,
replace
any
hardware
listed.
If
that
fails
to
correct
the
problem,
call
your
next
level
of
support.
This
ends
the
procedure.
2.
If
the
system
does
not
IPL
and
no
SAL
entry
can
be
found,
or
if
the
SAL
entry
has
no
possible
failing
items
listed,
do
the
following.
v
See
the
B428
and
B448
SRCs
in
the
topic.
v
Use
the
examples
there
to
break
down
the
SRC
and
extract
any
values
that
may
be
given
for
the
pairs
RC02
and
TP02,
RC03
and
TP03,
RC04
and
TP04,
and
RC05
and
TP05.
The
TP0x
values
are
hardware
CCIN
numbers.
v
Look
up
the
associated
part
numbers
in
the
3.
The
RC0x
values
are
reference
codes.
Use
the
RC0x
values
and
the
table
below
to
determine
the
location
for
the
associated
CCIN.
Replace
any
possible
failing
items
one
at
a
time.
Table
1.
RCOx
values
RC0x
Value
Location
for
Model
825
Location
for
Models
870
and
890
x001
NA
M15
x002
CB1
MB1
x003
C13
M21
x004
M01
M11
x005
M02
M16
x006
NA
M14
x007
NA
M41-C
x009
MB2
NA
x00A
MB1
M41
x00B
C08-C09
M40
x00C
C08-C09
M30
x00D
NA
M39
x00E
NB1-A
M41-A
x00F
NB1-B
M41-B
x010
C13-C
M18
x011
C13-A
M24
x012
C13-D
M07
x013
C13-B
M02
x014
C13-G
M25
x015
C13-E
M08
x016
C13-H
M01
x017
C13-F
M17
Analyze
hardware
problems
357