Diagnostic Tools Overview; Post Beep Codes, Error Messages, And Error Logs; Light-Path Diagnostics - IBM TotalStorage 200 Service Manual

POST Complete LED
SCSI Hard Drive In-use LED

Diagnostic tools overview

The following tools are available to help you identify and resolve hardware-related
problems:
v POST beep codes, error messages, and error logs
v Light-path diagnostics
v Diagnostic programs and error messages

POST beep codes, error messages, and error logs

Note: You will need to connect a keyboard and monitor to your appliance in order
When you switch on the appliance, it performs a series of tests to check the
operation of appliance components and some of the options installed in the
appliance. This series of tests is called the power-on self-test (POST).
If POST finishes without detecting any problems, a single beep sounds and the
POST Complete (OK) LED on the operator information panel is on.
If POST detects a problem, more than one beep sounds and an error message
appears on your screen. See "Beep codes and their meanings" on page 15 and
"POST error codes" on page 29 for more information.
Notes:
1. If you have a power-on password or administrator password set, you must type
2. A single problem might cause several error messages. When this occurs, work
Event/error logs
The POST error log contains the three most-recent error codes and messages that
the system generated during POST. The System Event/Error Log contains all error
messages issued during POST and all system status messages from the Advanced
System Management Processor.
To view the contents of the error logs, start the Configuration/Setup Utility program
and then select Event/Error Logs from the main menu.

Light-path diagnostics

If the System Error LED on the operator information panel is on, one or more LEDs
inside the appliance or on the power supplies will be on. Use the light-path
diagnostics to identify the type of error that occurred.
You can use the light-path diagnostics built into your appliance to quickly identify
the type of system error that occurred. Your appliance is designed so that any LEDs
6
Models 200 and 225 Service Guide
This green LED is on when the appliance completes the POST without any
errors.
This green LED is on when there is activity on a hard drive.
to see error messages.
the password and press Enter, when prompted, before POST will continue.
to correct the cause of the first error message. After you correct the cause of
the first error message, the other error messages usually will not occur the next
time you run the test.