IBM x3350 Installation Guide - Page 64

Universal, Serial, device, problems, Video, Light, diagnostics

Page 64 highlights

Universal Serial Bus (USB) device 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 the parts listing in the Problem Determination and Service Guide on the IBM System x Documentation CD 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 A USB device does not work. 1. Make sure that: v The correct USB device driver is installed. v The operating system supports USB devices. 2. Make sure that the USB configuration options are set correctly in the Configuration/Setup Utility program (see the User's Guide for more information). 3. If you are using an external USB hub, disconnect the USB device from the hub and connect it directly to the server. Video problems See "Monitor problems" on page 42. Light path diagnostics Light path diagnostics is a system of LEDs on various external and internal components of the server. When an error occurs, LEDs are lit throughout the server. By viewing the LEDs in a particular order, you can often identify the source of the error. The server is designed so that LEDs remain lit when the server is connected to a power source but is not turned on, provided that the power supply is operating correctly. This feature helps you to isolate the problem when the operating system is shut down. To acknowledge a system error but not take immediate action, press the remind button to place the server in Remind mode. When the server is in Remind mode, the system-error LED on the front of the server flashes. If a new failure occurs, the system-error LED is lit again. Press the reset button to reset the server and run the power-on self-test (POST). You might have to use a pen or the end of a straightened paper clip to press the button. The following illustration shows the LEDs on the light path diagnostics panel. 50 IBM System x3350 Types 4192 and 4193: Installation Guide

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Universal
Serial
Bus
(USB)
device
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
the
parts
listing
in
the
Problem
Determination
and
Service
Guide
on
the
IBM
System
x
Documentation
CD
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
A
USB
device
does
not
work.
1.
Make
sure
that:
v
The
correct
USB
device
driver
is
installed.
v
The
operating
system
supports
USB
devices.
2.
Make
sure
that
the
USB
configuration
options
are
set
correctly
in
the
Configuration/Setup
Utility
program
(see
the
User’s
Guide
for
more
information).
3.
If
you
are
using
an
external
USB
hub,
disconnect
the
USB
device
from
the
hub
and
connect
it
directly
to
the
server.
Video
problems
See
“Monitor
problems”
on
page
42.
Light
path
diagnostics
Light
path
diagnostics
is
a
system
of
LEDs
on
various
external
and
internal
components
of
the
server.
When
an
error
occurs,
LEDs
are
lit
throughout
the
server.
By
viewing
the
LEDs
in
a
particular
order,
you
can
often
identify
the
source
of
the
error.
The
server
is
designed
so
that
LEDs
remain
lit
when
the
server
is
connected
to
a
power
source
but
is
not
turned
on,
provided
that
the
power
supply
is
operating
correctly.
This
feature
helps
you
to
isolate
the
problem
when
the
operating
system
is
shut
down.
To
acknowledge
a
system
error
but
not
take
immediate
action,
press
the
remind
button
to
place
the
server
in
Remind
mode.
When
the
server
is
in
Remind
mode,
the
system-error
LED
on
the
front
of
the
server
flashes.
If
a
new
failure
occurs,
the
system-error
LED
is
lit
again.
Press
the
reset
button
to
reset
the
server
and
run
the
power-on
self-test
(POST).
You
might
have
to
use
a
pen
or
the
end
of
a
straightened
paper
clip
to
press
the
button.
The
following
illustration
shows
the
LEDs
on
the
light
path
diagnostics
panel.
50
IBM
System
x3350
Types
4192
and
4193:
Installation
Guide