The Server Fault Remind Test Circuits; Troubleshooting System Cooling Issues - Oracle Sun Server X4-4 Service Manual

The Server Fault Remind Test Circuits

The sever has two internal test circuits, the System Fault Remind Circuit and the DIMM Fault
Remind Circuit. The circuits help you locate failed components. For example, use the System
Fault Remind Circuit to locate a failed CPU or memory riser card, and use the DIMM Fault
Remind Circuit to locate a failed DIMM. Both circuits hold an electrical charge and have
limited operational capabilities once power is removed from the server. For example, the
DIMM Fault Remind Circuit is active for 10 minutes, and the System Fault Remind Circuit is
active for 30 to 60 minutes.
For information about how to use the circuits to identify failed components, see
Failed Memory Riser Card, DIMM, or CPU" on page

Troubleshooting System Cooling Issues

Maintaining the proper internal operating temperature of the server is crucial to a the health of
the server. To prevent server shutdown and damage to components, address over temperature-
and hardware-related issues as soon as they occur. If your server has a temperature-related fault,
the cause of the problem might be one of following:
"External Ambient Temperature Too High" on page 49
■
"Airflow Blockage" on page 50
■
"Internal Pressures Compromised" on page 50
■
"Hardware Component Failure" on page 51
■
External Ambient Temperature Too High
Server component cooling relies on the movement of cool ambient air pulled into the server
from its external environment. If the ambient temperature of the server's external environment
Troubleshoot Hardware Faults
81.
Troubleshooting and Diagnostics
"Locate a
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