IBM 8863 Service Guide - Page 30

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POST beep codes A beep code is a combination of short or long beeps or a series of short beeps separated by pauses. For example, a "1-2-3" beep code is one beep, a pause, two beeps, a pause, and three beeps. When POST is completed, one beep is emitted to indicate that the server is working correctly. If POST detects a problem during startup, other beep codes might occur. See "Beep code descriptions" to help diagnose and solve problems that are detected during startup. If no beep code sounds, see "No-beep symptoms" on page 18. Beep code descriptions The following table describes the beep codes and suggested actions to correct the detected problems. 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," on page 93 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. Beep code Description Action 1-1-3 CMOS write/read test failed. 1. Reseat the following components: a. Battery b. I/O board 2. Replace the components listed in step 1 one at a time, in the order shown, restarting the server each time. 1-1-4 BIOS ROM checksum failed. 1. Reseat the microprocessor tray. 2. (Trained service technician only) Replace the microprocessor tray. 1-2-1 Programmable interval timer failed. 1. Reseat the I/O board. 2. Replace the I/O board. 1-2-2 DMA initialization failed. 1. Reseat the I/O board. 2. Replace the I/O board. 1-2-3 DMA page register write/read failed. 1. Reseat the I/O board. 2. Replace the I/O board. 1-2-4 RAM refresh verification failed. 1. Reseat the following components: a. DIMM b. Memory card 2. Replace the components listed in step 1 one at a time, in the order shown, restarting the server each time. 1-3-1 1st 64K RAM test failed. 1. Reseat the following components: a. DIMM b. Memory card 2. Replace the components listed in step 1 one at a time, in the order shown, restarting the server each time. 14 IBM xSeries 366 Type 8863: Problem Determination and Service Guide

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POST
beep
codes
A
beep
code
is
a
combination
of
short
or
long
beeps
or
a
series
of
short
beeps
separated
by
pauses.
For
example,
a
“1-2-3”
beep
code
is
one
beep,
a
pause,
two
beeps,
a
pause,
and
three
beeps.
When
POST
is
completed,
one
beep
is
emitted
to
indicate
that
the
server
is
working
correctly.
If
POST
detects
a
problem
during
startup,
other
beep
codes
might
occur.
See
“Beep
code
descriptions”
to
help
diagnose
and
solve
problems
that
are
detected
during
startup.
If
no
beep
code
sounds,
see
“No-beep
symptoms”
on
page
18.
Beep
code
descriptions
The
following
table
describes
the
beep
codes
and
suggested
actions
to
correct
the
detected
problems.
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,”
on
page
93
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.
Beep
code
Description
Action
1-1-3
CMOS
write/read
test
failed.
1.
Reseat
the
following
components:
a.
Battery
b.
I/O
board
2.
Replace
the
components
listed
in
step
1
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
1-1-4
BIOS
ROM
checksum
failed.
1.
Reseat
the
microprocessor
tray.
2.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
1-2-1
Programmable
interval
timer
failed.
1.
Reseat
the
I/O
board.
2.
Replace
the
I/O
board.
1-2-2
DMA
initialization
failed.
1.
Reseat
the
I/O
board.
2.
Replace
the
I/O
board.
1-2-3
DMA
page
register
write/read
failed.
1.
Reseat
the
I/O
board.
2.
Replace
the
I/O
board.
1-2-4
RAM
refresh
verification
failed.
1.
Reseat
the
following
components:
a.
DIMM
b.
Memory
card
2.
Replace
the
components
listed
in
step
1
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
1-3-1
1st
64K
RAM
test
failed.
1.
Reseat
the
following
components:
a.
DIMM
b.
Memory
card
2.
Replace
the
components
listed
in
step
1
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
14
IBM
xSeries
366
Type
8863:
Problem
Determination
and
Service
Guide