Service manual

3-12 Sun Ultra 2 Series Service Manual • July 1996
3.5 POST Progress and Error Reporting
While POST is initialized, the Caps Lock key on the Sun Type-5 keyboard flashes on
and off to indicate that POST tests are being executed. Additional POST progress
indications are also visible when a TTY-type terminal or a tip line is connected
between serial port B (default port) of the system being tested and a POST
monitoring system.
If an error occurs during the POST execution, the keyboard Caps Lock key indicator
stops flashing and an error code is displayed using the Caps Lock, Compose, Scroll
Lock, and Num Lock key indicators. The error code indicates a particular system
hardware failure.
Note – An error code may only be visible for a few seconds. Observe the Caps Lock,
Compose, Scroll Lock, and Num Lock key indicators closely while POST is active.
In most cases, POST also attempts to send a failure message to the POST monitoring
system. The following code example identifies the typical appearance of a failure
message. If a keyboard error code is displayed, determine the meaning of the error
code by comparing the keyboard error code pattern to the corresponding error code
meaning listed in the following table.
0>@(#) Sun Ultra Enterprise 2 FCS_POST, version SB3.3.7 3/09/1998
02:14 PM
1>@(#) Sun Ultra Enterprise 2 FCS_POST, version SB3.3.7 3/09/1998
02:14 PM
0> UltraSparc1 Version 4.0
1> UltraSparc1 Version 4.0
0>
POST is running with diag-level= min, please wait...
POST is running with diag-level= min, please wait...
<< POST COMPLETE >>
Power On Selftest Completed
CODE EXAMPLE 3-2 diag-level Variable Set to min (Continued)