IBM eserver 630 6C4, Руководство по обслуживанию

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Console Strategy
The firmware starts a console-selection sequence at system boot time if any of the
following is true:
v
A console has not yet been selected.
v
A previous console-selection sequence timed-out.
v
A change in the system configuration affects the console (keyboard
installed/removed, mouse installed/removed, graphics adapter installed/removed or
moved to another PCI slot).
The console-selection sequence allows you to select (from the appropriate input device)
any one of the available console devices. If no console is selected within approximately
60 seconds, serial port 1 (S1) is selected as the console and the selection sequence
times-out.
Attention: If an ASCII terminal is attached to serial port 1 (S1), and there is any
interaction with this terminal:
v
After
OK
displays in the operator panel
AND
v
Before the power-on sequence is initiated
the firmware will use this terminal as the console, regardless of the previous console
selection.
After a console has been selected, the console-selection sequence is only started at
boot time if there is a change in the system configuration (as described above), or the
contents of the system’s nonvolatile memory (NVRAM) are lost.
Note: Moving an ASCII terminal from one serial port to another (from S1 to S2) cannot
be detected by the firmware, so it does not constitute a configuration change.
You can also initiate a system console-selection sequence from the SMS menus.
Power-On Self-Test
After power is turned on and before the operating system is loaded, the system does a
power-on self-test (POST). This test performs checks to ensure that the hardware is
functioning correctly before the operating system is loaded. During the POST, a POST
screen displays, and POST indicators appear on the firmware console (if one is
connected). The next section describes the POST indicators and functions that can be
accessed during the POST.
16 Eserver
pSeries 630 Models 6C4 and 6E4 Service Guide