Sun Microsystems Enterprise 250 Owner's Manual page 272

4 Keyboard LEDs (if a keyboard is present)
You can also obtain a summary of POST results by using the .post and .rsc
commands.
Observing POST in Progress
As POST runs, it displays detailed diagnostic status messages on the system console
(or on an RSC console, if POST output has been redirected to an RSC console). If
POST detects an error, it displays an error message on either the system console or
the RSC console that indicates the failing part. A sample error message is provided
below:
Power On Self Test Failed. Cause: DIMM U0702 or System Board
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POST status and error conditions are indicated by the general fault LED on the
system front panel. The LED blinks slowly to indicate that POST is running. It
remains lit if POST detects a fault.
If a Sun Type-5 keyboard is attached, POST status and error indications are also
displayed via the four LEDs on the keyboard. When POST starts, all four keyboard
LEDs blink on and off simultaneously. After that, the Caps Lock LED blinks slowly to
indicate POST is running. If an error is detected, the pattern of the lit LEDs provides
an error indication. See "Error Indications" on page 257 for more information.
If POST detects an error condition that prevents the system from booting, it will halt
operation and display the ok prompt. The last message displayed by POST prior to
the ok prompt indicates which part you need to replace.
Obtaining a Summary of POST Results
Use the .post command at the ok prompt to view a summary of POST results.
ok .post
System status: OK
CPU0:
CPU1:
SC-MP:
Psycho@1f:
Cheerio:
SCSI:
Mem Bank0:
Mem Bank1:
Mem Bank2:
Mem Bank3:
PROM:
NVRAM:
TTY:
SuperIO:
Sun Enterprise 250 Server Owner's Guide ♦ Revision A, June 1998
238
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