IBM 62174DU Installation Guide - Page 80

System-board, error

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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, Machine Type 6217 in the Problem Determination and Service Guide 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. Symptom Action The computer does not start. 1. Make sure that: v The power cords are correctly connected to the computer and to a working electrical outlet. v The type of memory that is installed is correct. 2. If you just installed an optional device, remove it, and restart the computer. If the computer now starts, you might have installed more devices than the power supply supports. 3. If LEDs for microprocessors or VRMs are lit, make sure that: v A VRM is installed if a second microprocessor is installed. v All microprocessors have the same speed. 4. Override the front panel power control button: a. Disconnect the computer power cords. b. Install a jumper on the force-power-on jumper (J27). c. Reconnect the power cords. If the computer does not start, (trained service technician only) replace the system board. 5. See "Solving undetermined problems" in the Problem Determination and Service Guide. The computer does not turn off. 1. Determine whether you are using an Advanced Configuration and Power Interface (ACPI) or a non-ACPI operating system. If you are using a non-ACPI operating system, complete the following steps: a. Press Ctrl+Alt+Delete. b. Turn off the computer by pressing the power-control button for 4 seconds. c. If the computer fails POST and the power-control button does not work, disconnect the AC power cord. 2. If the problem remains or if you are using an ACPI-aware operating system, the problem could be with the system board. System-board error LEDs The following illustration shows the location of the LEDs on the system board. You might need to refer to this illustration when solving problems with the computer. Each error LED is lit to indicate a problem with a specific component. After a problem is corrected, its LED will not be lit the next time the computer is restarted; if the problem remains, the LED will be lit again. See "Solving problems" in the Problem Determination and Service Guide on the IBM IntelliStation Documentation CD for additional information. 68 IntelliStation A Pro Type 6217: Installation Guide

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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,
Machine
Type
6217
in
the
Problem
Determination
and
Service
Guide
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.
Symptom
Action
The
computer
does
not
start.
1.
Make
sure
that:
v
The
power
cords
are
correctly
connected
to
the
computer
and
to
a
working
electrical
outlet.
v
The
type
of
memory
that
is
installed
is
correct.
2.
If
you
just
installed
an
optional
device,
remove
it,
and
restart
the
computer.
If
the
computer
now
starts,
you
might
have
installed
more
devices
than
the
power
supply
supports.
3.
If
LEDs
for
microprocessors
or
VRMs
are
lit,
make
sure
that:
v
A
VRM
is
installed
if
a
second
microprocessor
is
installed.
v
All
microprocessors
have
the
same
speed.
4.
Override
the
front
panel
power
control
button:
a.
Disconnect
the
computer
power
cords.
b.
Install
a
jumper
on
the
force-power-on
jumper
(J27).
c.
Reconnect
the
power
cords.
If
the
computer
does
not
start,
(trained
service
technician
only)
replace
the
system
board.
5.
See
“Solving
undetermined
problems”
in
the
Problem
Determination
and
Service
Guide
.
The
computer
does
not
turn
off.
1.
Determine
whether
you
are
using
an
Advanced
Configuration
and
Power
Interface
(ACPI)
or
a
non-ACPI
operating
system.
If
you
are
using
a
non-ACPI
operating
system,
complete
the
following
steps:
a.
Press
Ctrl+Alt+Delete.
b.
Turn
off
the
computer
by
pressing
the
power-control
button
for
4
seconds.
c.
If
the
computer
fails
POST
and
the
power-control
button
does
not
work,
disconnect
the
AC
power
cord.
2.
If
the
problem
remains
or
if
you
are
using
an
ACPI-aware
operating
system,
the
problem
could
be
with
the
system
board.
System-board
error
LEDs
The
following
illustration
shows
the
location
of
the
LEDs
on
the
system
board.
You
might
need
to
refer
to
this
illustration
when
solving
problems
with
the
computer.
Each
error
LED
is
lit
to
indicate
a
problem
with
a
specific
component.
After
a
problem
is
corrected,
its
LED
will
not
be
lit
the
next
time
the
computer
is
restarted;
if
the
problem
remains,
the
LED
will
be
lit
again.
See
“Solving
problems”
in
the
Problem
Determination
and
Service
Guide
on
the
IBM
IntelliStation
Documentation
CD
for
additional
information.
68
IntelliStation
A
Pro
Type
6217:
Installation
Guide