IBM 88631SU Service Guide - Page 117

Power, Fault, Reseat, microprocessor, tray., Trained, service, technician, microprocessors., present

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Page 117 highlights

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See Chapter 3, "Parts listing, Type 8863, 7362," on page 107 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)", that step must be performed only by a trained service technician. System-error log message Action Vtt Power Good Fault 1. Reseat the microprocessor tray. 2. (Trained service technician only) Reseat the microprocessors. 3. Reseat the microprocessor VRMs, if present. 4. (Trained service technician only) Replace the microprocessor tray. Chapter 2. Diagnostics 101

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v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
Chapter
3,
“Parts
listing,
Type
8863,
7362,”
on
page
107
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only)”,
that
step
must
be
performed
only
by
a
trained
service
technician.
System-error
log
message
Action
Vtt
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
(Trained
service
technician
only)
Reseat
the
microprocessors.
3.
Reseat
the
microprocessor
VRMs,
if
present.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
Chapter
2.
Diagnostics
101