IBM 7012 G Series, Service Manual

Page: 255 / 264

E-2
Operator Guide
If the command
sbb
is entered on the BUMP console, and the system key is in the
Normal position, the system goes to the SBB_ECMD state.
•
If the Power-on button is pressed and changes from the On position to the Off position,
the system sets the
was_shutdown
status to false.
•
If the Enter key is pressed on the BUMP console, the system goes to the the
SBB_ECMD state.
•
If the
power
command is entered on the BUMP console, the system goes to the
SBB_PCMD state.
SBB_ECMD
In this state the > character is displayed on the BUMP console but the cursor is located in
the same position as the > prompt ( >
_ ).
This state allows electronic key mode switching to be performed as well as power functions.
The power functions follow below:
•
If the Power-on button is initially detected in the On position, and the
was_shutdown
status is false, the system goes to the WAIT_POWER_ON state.
•
If the Power-on button is pressed and changes from the Off position to the On position,
the system goes to the WAIT_POWER_ON state.
•
If the Power-on button is pressed and changes from the On position to the Off position,
the system sets the
was_shutdown
status to false.
•
If the Enter key is pressed on the BUMP console, the system goes to the
SBB_GATEWAY state.
SBB_PCMD
In this state the > character is displayed on the BUMP console but the cursor is located in
the same position as the > prompt ( >
_ ).
•
If the Power-on button is initially detected in the On position, the system goes to the
WAIT_POWER_ON state.
•
If the Power-on button is pressed and changes from the Off position to the On position,
the system goes to the WAIT_POWER_ON state.
•
If the Power-on button is pressed and changes from the On position to the Off position,
the system sets the
was_shutdown
status to false.
•
If the Enter key is pressed on the BUMP console, the system goes to the
SBB_GATEWAY state.
SBB_MENU
This is where the Stand-by (sbb) menu items are displayed. This menu is exited by entering
“x” repeatedly until the menu is exited. When the menu is exited, the system goes to the
MAIN_STANDBY state.
WAIT_POWER_ON
This state displays the message
Wait power on....
•
If the
power_fault
status is true (a previously detected fault), the system goes to the
MAIN_STANDBY state.