Compaq AlphaServer 160 User Manual page 47

The callouts in Figure 2–20 point to these components on the control panel:
–
Secure LED – When lit, indicates that the keyswitch is in the Secure
position and system is powered on. All pushbuttons and SCM functions
are disabled, including remote access to the system.
—
Power OK LED – When lit, indicates at least one QBB is powered on and
remote console operations are enabled. The keyswitch is in the On
position.
˜
Halt LED – When lit with the Power LED, indicates the system is powered
on, remote console operations are enabled, and the Halt pushbutton is
pressed.
When lit with both Power LED and Secure LED, indicates a powered on
system, disabled remote console operations, and Halt pushbutton is
pressed in.
™
Diagnostic display indicates system status.
š
Off switch position – System is powered off and cannot be powered on
remotely.
›
On switch position – System is enabled to be powered up. A remote system
user can power on or power off the system.
œ
Secure switch position – System is powered on and cannot be remotely
powered on or off. All pushbuttons and SCM functions are disabled.

Halt pushbutton – Pressing this pushbutton causes the operating system
to perform a halt, with no captured error information. The system will
automatically reset if the auto_fault_reset environment variable is
enabled.
ž
Fault pushbutton – Pressing this pushbutton causes a system reset
without clearing captured error information in the control and status
registers.
➓
Reset pushbutton – Pressing this pushbutton causes a system reset that
clears captured error information.
GS160/320 System Overview 2-29