User`s manual

Preliminary
Power-On-Self-Test (POST)
SANbox-16STD Fibre Channel Switch
3-2 Diagnostics/Troubleshooting 59012-03 Rev. A Installer’s/User’s Manual
Power-On-Self-Test (POST)
Overview
The Switch checks the state of the Test Mode switch as part of its power-up proce-
dure. Refer to Figure 3-1 for the location of the Test Mode switch.
Figure 3-1 Test Mode Switch
The normal setting of this switch (note the location of the dot on the switch relative
to the dot on the faceplate) instructs the Switch to run the diagnostics one time at
startup. If no fatal errors are encountered, the Switch places itself in normal
operating mode. The diagnostics run at startup are the Power-On-Self-Test (POST)
diagnostics.
These POST diagnostics check for proper Switch operation except for the GBICs.
During the POST, the Switch logs any errors encountered. Some POST errors are
fatal, others are non-fatal. A fatal error disables the switch so that it will not
operate. A non-fatal error allows the switch to operate, but with some decrease in
performance until the problem can be corrected.
For example:
• A PROM checksum failure is an example of a fatal error. This indicates that
the PROM firmware is corrupt and the switch will not operate.
• A Fibre Channel port failure is an example of a non-fatal error. The Switch
isolates the bad port while the other ports continue to operate.
NOTE:
In the following POST error descriptions, you will note that some errors result in a
Switch that is operable, but in a degraded way (non-fatal errors), other errors result
in a Switch that is not operable (fatal errors).Whether the problem is fatal or non-
fatal, please contact QLogic Customer Support or your authorized maintenance
provider. If the problem is non-fatal, you should be able to run in a degraded mode
until the problem is fixed.
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Test Mode Switch
Dot on the faceplate
Dot on the switch