Exchange
the
following
FRUs
in
the
order
listed.
1.
VRM
at
U0.1-P1-V1
2.
VRM
at
U0.1-P1-V2
3.
VRM
at
U0.1-P1-V3
4.
System
backplane
Restart
the
system,
and
perform
error
log
analysis.
Do
you
get
an
SRN
indicating
a
voltage
sensor
is
out
of
range?
NO
The
last
FRU
exchanged
is
defective.
Go
to
″
MAP
0410:
Repair
Checkout
″
in
the
RS/6000
Eserver
pSeries
Diagnostic
Information
for
Multiple
Bus
Systems
.
YES
Reinstall
the
original
FRU.
Repeat
the
FRU
replacement
steps
until
a
defective
FRU
is
identified
or
all
the
FRUs
have
been
exchanged.
If
the
symptom
did
not
change
and
all
FRUs
have
been
exchanged,
go
to
“Step
1521-13”
on
page
82..
If
the
symptom
changed,
check
for
loose
cards,
cables,
and
obvious
problems.
If
you
do
not
find
a
problem,
go
to
the
“Quick
Entry
MAP”
on
page
43
and
follow
the
instructions
for
the
new
symptom.
Chapter
3.
Maintenance
Analysis
Procedures
(MAPs)
83
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