IBM 866441Y - Netfinity 5600 - 8664, Hardware Maintenance Manual

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as the server progresses through POST and the final
number that appears on the screen represents the total
amount of memory available. If POST finishes without
detecting any problems, a single beep sounds, the first
screen of your operating system or application program
appears, and the System POST Complete (OK) light is
illuminated on the operator information panel.
If POST detects a problem, more than one beep sounds
and an error message appears on your screen.
Note
A single problem might cause several error messages.
When this occurs, work to correct the cause of the first
error message. After the cause of the first error
message is corrected, the other error messages
usually will not occur the next time you run the test.
POST beep codes
POST generates beep codes to indicate successful
completion or the detection of a problem.
Ÿ
One beep indicates the successful completion of
POST.
Ÿ
More than one beep indicates that POST detected a
problem. For more information, see “Beep
symptoms” on page 197.
Light path diagnostics
You can use the light path diagnostics built into your
server to quickly identify the type of system error that
occurred. Your server is designed so that any LEDs that
are illuminated remain illuminated when the server shuts
down as long as the AC power source is good and the
power supplies can supply
+
5V dc current to the server.
This feature helps you isolate the problem if an error
causes the server to shut down. See Table 1 on page 14.
Netfinity 5600 - Type 8664
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