IBM 7012 G Series, Service Manual

Page: 40 / 264

2-10
Service Guide
Working with SystemGuard
You can change SystemGuard parameters and flags from different locations They can be
changed from the SystemGuard STAND-BY MENU, the SystemGuard MAINTENANCE
MENU, the Diagnostics interface, and also from AIX.
When the key signal is received, SystemGuard clears the screen and displays the
SystemGuard prompt. At this point, a keyword can be entered. The supported keywords are:
power This keyword starts the system, exactly as if the power button is pushed.
You can change, disable or enable this keyword: see “Power-On Command
Parameters” on page 2-33 for details. Turning the system power on makes
the system enter the init phase. Thus, if the Key Mode Switch is in the
Service position, and if the
AutoService IPL flag is disabled, you enter the
Maintenance Menu.
sbb This keyword displays the STAND-BY menu.
It is important to understand the following flowchart.
“Stand-By”
on Operator
Panel Display
Stand-By
Mode
Stand-
By
Menu
Service
System
Key
Position
Normal and Secure
Exit
Enter “sbb”
(>) Console Prompt
Enter “power”
System
Key
Position
Service
BUMP
Console
Enabled
No
Auto
Service IPL
Disabled
No
Yes
Secure
Multi-User
AIX
Maintenance
Menu
Stall State
Diagnostics
Normal
Press the Enter key
Yes