Sun Microsystems Netra CT 410, Service Manual

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4-20 Netra CT Server Service Manual • February 2007
4.7 Troubleshooting a Host CPU Board
This section describes how to troubleshoot problems related to the host board. The
information provided here primarily covers situations when the system containing
the host board does not boot up or when the board is not fully functional after boot.
Only general troubleshooting tips are provided here. No component-level
troubleshooting information is included in this section.
The following topics are covered:
■
General troubleshooting tips
■
General troubleshooting requirements
■
Mechanical failures
■
Power-on failures
■
Failures subsequent to power-on
■
Troubleshooting during POST/OBP and during boot process
Also, the following diagnostic procedures are described:
■
OpenBoot PROM on-board diagnostics
■
OpenBoot diagnostics
4.7.1 General Troubleshooting Tips
Caution – High voltages are present in the Netra CT server. To avoid physical
injury, follow all the safety rules specified in the Netra CT Server Safety and
Compliance Manual when opening the enclosure and/or removing and installing a
board.
The following general troubleshooting tips are useful in isolating issues related to a
host board:
1. Make sure the host board is installed properly in the correct slot in the Netra CT
server.
The CPU board is installed in slot 1 in the Netra CT 810 server and in slot 3 in the
Netra CT 410 server.