HP 9000 rp5400 Servers - Manual (Page 73)

6 Troubleshooting
Determine Current System State
To determine the current system state of an rp54xx server, first note the state of all LED indicators
on the front panel. Processing this information using the decoders provided can greatly reduce
the amount of time required to repair a suspected system fault.
The following procedure lists the tools available to aid you in determining the current system
state.
1. Determine if you can get a system prompt and if so, what kind of prompt.
Screen Prompt Software System
Main Menu: Enter command or menu> Boot Console Handler (BCH)
GSP> Guardian Service Processor (GSP)
ISL> Initial System Loader (ISL)
Prompt varies depending on UNIX state HP UNIX (HP-UX)
2. Decode the Run/Attention/Fault LED States .
3. Decode the PCI I/O LED States .
4. Decode the Fan, Power Supply, and Disk LED States .
5. Decode the GSP LED States .
6. Decode the LAN/SCSI LED States .
Troubleshooting and FRU identification
Once you have determined the current system state, you must troubleshoot the system to
determine what the problem symptoms are and what repair actions to take.
Problem Symptoms and Repair Actions
Use this guide to assist you in repairing the system by matching the problem symptom with the
appropriate troubleshooting step.
Determine Current System State 73