IBM 8840 Hardware Maintenance Manual - Page 106

Serial, error, symptoms

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Page 106 highlights

Note: See "System" on page 108 to determine which components should be replaced by a field service technician. Symptom FRU/action The server does not turn on. 1. Verify that: v The power cables are properly connected to the server. v The electrical outlet functions properly. v The type of memory installed is supported by the server, and that functional DIMMs are installed in slots 1 and 2. v The microprocessor is installed in the correct socket. v The diagnostic panel cable is properly connected. v If you just installed an option, remove it, and restart the server. If the server now turns on, you might have installed more options than the power supply supports. 2. If LEDs for microprocessors or VRMs are on, verify that: a. A VRM is installed if a second microprocessor is present. b. All microprocessors have the same speed. 3. Override front panel power button: a. Disconnect server power cords. b. Move switch 1 on switch block 2 to the opposite position. c. Reconnect power cords. If server turns on: a. Service processor (baseboard management controller) error. b. Operator information card. If server does not turn on: v System board The server does not turn off. 1. Verify whether you are using an ACPI or non-ACPI operating system. If you are using a non-ACPI operating system: a. Press Ctrl+Alt+Delete. b. Turn off the system by holding the power-control button for 4 seconds. c. If server fails during BIOS POST and power-control button does not work, remove the AC power cord. 2. If the problem remains or if you are using an operating system with Advanced Configuration and Power Management (ACPI) awareness, suspect the system board. The procedure to check for ACPI is to locate the file named HAL.dll; ACPI is present if the internal name HALACPI.dll appears after you right-clicking on the HAL.dll file name → choose Properties → select Version tab → click Internal Name. Serial port error symptoms Note: See "System" on page 108 to determine which components should be replaced by a field service technician. Symptom FRU/action The number of serial ports identified by the operating system is less than the number of serial ports installed. 1. Verify that: v Each port is assigned a unique address by the Configuration/Setup Utility program and none of the serial ports is disabled. v The serial-port adapter, if you installed one, is seated properly. 2. Failing serial port adapter. 96 xSeries 346 Types 8840 and 1880: Hardware Maintenance Manual and Troubleshooting Guide

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Note:
See
“System”
on
page
108
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Symptom
FRU/action
The
server
does
not
turn
on.
1.
Verify
that:
v
The
power
cables
are
properly
connected
to
the
server.
v
The
electrical
outlet
functions
properly.
v
The
type
of
memory
installed
is
supported
by
the
server,
and
that
functional
DIMMs
are
installed
in
slots
1
and
2.
v
The
microprocessor
is
installed
in
the
correct
socket.
v
The
diagnostic
panel
cable
is
properly
connected.
v
If
you
just
installed
an
option,
remove
it,
and
restart
the
server.
If
the
server
now
turns
on,
you
might
have
installed
more
options
than
the
power
supply
supports.
2.
If
LEDs
for
microprocessors
or
VRMs
are
on,
verify
that:
a.
A
VRM
is
installed
if
a
second
microprocessor
is
present.
b.
All
microprocessors
have
the
same
speed.
3.
Override
front
panel
power
button:
a.
Disconnect
server
power
cords.
b.
Move
switch
1
on
switch
block
2
to
the
opposite
position.
c.
Reconnect
power
cords.
If
server
turns
on:
a.
Service
processor
(baseboard
management
controller)
error.
b.
Operator
information
card.
If
server
does
not
turn
on:
v
System
board
The
server
does
not
turn
off.
1.
Verify
whether
you
are
using
an
ACPI
or
non-ACPI
operating
system.
If
you
are
using
a
non-ACPI
operating
system:
a.
Press
Ctrl+Alt+Delete.
b.
Turn
off
the
system
by
holding
the
power-control
button
for
4
seconds.
c.
If
server
fails
during
BIOS
POST
and
power-control
button
does
not
work,
remove
the
AC
power
cord.
2.
If
the
problem
remains
or
if
you
are
using
an
operating
system
with
Advanced
Configuration
and
Power
Management
(ACPI)
awareness,
suspect
the
system
board.
The
procedure
to
check
for
ACPI
is
to
locate
the
file
named
HAL.dll;
ACPI
is
present
if
the
internal
name
HALACPI.dll
appears
after
you
right-clicking
on
the
HAL.dll
file
name
→
choose
Properties
→
select
Version
tab
→
click
Internal
Name
.
Serial
port
error
symptoms
Note:
See
“System”
on
page
108
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Symptom
FRU/action
The
number
of
serial
ports
identified
by
the
operating
system
is
less
than
the
number
of
serial
ports
installed.
1.
Verify
that:
v
Each
port
is
assigned
a
unique
address
by
the
Configuration/Setup
Utility
program
and
none
of
the
serial
ports
is
disabled.
v
The
serial-port
adapter,
if
you
installed
one,
is
seated
properly.
2.
Failing
serial
port
adapter.
96
xSeries
346
Types
8840
and
1880:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide