Service manual

Chapter 5 Troubleshooting
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• ECC (Error Checking and Correction) Single-Bit Errors. These errors may be detected in
POST as in run-time. Appropriate POST error codes will be generated.
• ECC (Error Checking and Correction) Multiple-Bit Errors. Such errors may be detected
during POST as well as run-time. Multiple Bit Errors are not corrected.
NOTE Memory downsizing will occur during POST if ECC errors occur. In this case, you will
see error codes #310, 311, 312 and/or 313.
ECC Single-Bit and Multiple-Bit Errors
There are two types of errors that may occur during boot-up or runtime operation:
•
ECC Single-bit errors, which are divided into two types. The memory controller corrects "soft"
single-bit errors without any effect on the system.
NOTE Once an error is corrected, a System Management Interrupt (SMI) occurs without
impacting system operation.
• ECC Multiple-bit errors (two bits or more). Multiple-bit errors, which are extremely rare, may
cause the system to halt or display a memory parity error. If this occurs, take the following
steps:
1. Cycle the system power.
2. During the power-on self test (POST), press the ‘D’ key to test memory.
à If the memory test passes, then the memory failure could be a soft ECC error.
Reboot the system and reactivate your applications.
à If the memory test fails, please contact your support representative for additional assistance
to isolate the problem.
Troubleshooting Resources
If you are having problems installing your memory board, a number of different tools help to troubleshoot the
problem:
• HP NetServer LC 2000/ 2000r Installation Guide
• HP NetServer Navigator CD-ROM
à HP NetServer Information Assistant
List of Error Messages and Beep Error Messages
Problem solving processes
à NetServer Utilities
CD-ROM Problems
The CD-ROM drawer will not open
If the CD-ROM drawer fails to open when you press the Eject Button or with software commands, do the
following:
1. Turn the HP NetServer off.