Table 2. SCSI messages.
SCSI Messages | Description |
|
|
All | One or more of the following might be causing the problem. |
| • A failing SCSI device (adapter, drive, controller) |
| • An improper SCSI configuration |
| • Duplicate SCSI IDs in the same SCSI chain |
| • An improperly installed SCSI terminator |
| • A defective SCSI terminator |
| • An improperly installed cable |
| • A defective cable |
Action:
Verify that:
• The external SCSI devices are turned on. External SCSI devices must be turned on before the server.
• The cables for all external SCSI devices are connected correctly.
• The last device in each SCSI chain is terminated properly.
• The SCSI devices are configured correctly.
If the above items are correct, run the diagnostic programs to obtain additional information about the failing device. If the error remains or recurs, call for service.
Identifying problems using status LEDs
If the System Error light in the operator information panel on the front of the server is on, one or more LEDs inside the server may be on. Use the light path diagnostics to identify the type of error that occurred.
For LED locations see “System board LEDs” on page 41.
Light Path Diagnostics
You can use the Light Path Diagnostics built into your server to quickly identify the type of system error that occurred. The Light Path Diagnostics panel is located on the system board just behind PCI adapter slot 1. When you press on the Light Path Diagnostics button the LED on the top right corner of the panel will illuminate. This shows that the diagnostic circuitry is working correctly.
Your server is designed so that any LEDs that are illuminated can be
Important: You have up to 12 hours to use the Light Path Diagnostic LED’s after AC power has been removed from the server. After 12 hours you must power the server up again to be able to use the Light Path Diagnostic LEDs to help locate system errors.
Chapter 3. Diagnostics 13
