IBM 7012 G Series, Service Manual

Page: 63 / 264

Using SystemGuard
2-33
Power-On Command Parameters
During the standby idle phase, the system power can be turned on (and the IPL started) by
entering a BUMP console power-on string through line S1 or a service console power-on
string through line S2 (see “Working with SystemGuard” on page 2-10 for a description of
available keywords). These strings are especially useful to remotely turn on the system
power, without having to press the power button. This option allows you to enable or disable
the power-on command feature and to set the power-on strings. All specified changes only
take effect during the next initialization.
1. Enter
0
in the SET PARAMETERS menu to select this option. The following screen
displays the current settings and provides commands to change them.
POWER–ON COMMAND
PRESENT CONDITIONS: BUMP CONSOLE POWER–ON –> Enable
COMMAND STRING –> power
SERVICE CONSOLE POWER–ON –> Disable
COMMAND STRING –> power
COMMANDS: 0> ENABLE BUMP CONSOLE POWER–ON
1> DISABLE BUMP CONSOLE POWER–ON
2> CHANGE BUMP CONSOLE POWER–ON COMMAND STRING
3> ENABLE SERVICE CONSOLE POWER–ON
4> DISABLE SERVICE CONSOLE POWER–ON
5> CHANGE SERVICE CONSOLE POWER–ON COMMAND STRING
SELECT [x:exit]:
2. Select an action and enter the corresponding number.
Note: The power on string is an ASCII string of 15 characters maximum.
Voltage Margins
This option enables the trained service person to set voltage margins for each unit.
Note: This option can only be used for error analysis or factory test and must be used only
by trained service personnel. Restore nominal voltage values before restarting other
operations. Any data written on the disk in marginal mode must be removed before
restarting normal operations. Ignore any disk errors when using this option, and
retest the disk in nominal conditions.