Light Path Diagnostics - IBM eServer 260 Series Installation Manual

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 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.
The SCSI RAID program cannot
view all installed drives, or the
operating system cannot be
installed.
The operating-system
installation program
continuously loops.
The ServerGuide program will
not start the operating-system
CD.
The operating system cannot be
installed; the option is not
available.
Software problems
You suspect a software
problem.
Universal Serial Bus (USB)
port device problems
A USB device does not work.

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.
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IBM xSeries 260 Type 8865: Installation Guide
v Make sure that there are no duplicate SCSI IDs or IRQ assignments.
v Make sure that the hard disk drive is connected correctly.
Make more space available on the hard disk.
Make sure that the operating-system CD is supported by the ServerGuide program.
See the ServerGuide Setup and Installation CD label for a list of operating-system
versions that support the ServerGuide program.
Make sure that the operating system is supported on the server. If the operating
system is supported, either there is no logical drive defined (SCSI RAID systems)
or the ServerGuide System Partition is not present. Run the ServerGuide program
and make sure that setup is complete.
Action
1. To determine whether the problem is caused by the software, make sure that:
v The server has the minimum memory that is needed to use the software. For
memory requirements, see the information that comes with the software. If
you have just installed an adapter or memory, the server might have a
memory-address conflict.
v The software is designed to operate on the server.
v Other software works on the server.
v The software works on another server.
2. If you received any error messages when using the software, see the
information that comes with the software for a description of the messages and
suggested solutions to the problem.
3. Contact your place of purchase of the software.
Action
1. Run USB diagnostics.
2. Make sure that:
v The correct USB device driver is installed.
v The operating system supports USB devices.
®
v A standard PS/2 keyboard or mouse is not connected to the server. If it is,
a USB keyboard or mouse will not work during POST.
3. Make sure that the USB configuration options are set correctly in the
Configuration/Setup Utility program menu (see the User's Guide for more
information).
4. If you are using a USB hub, disconnect the USB device from the hub and
connect it directly to the server.