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Service processor parameters in service mode
When the system is in service mode, the following service-processor parameters are suspended:
v Unattended Start Mode
v Reboot/Restart Policy
v Call-Out
v Surveillance
When you exit service mode, the service processor functions are reactivated.
System power-on methods
This section discusses the following system power-on methods:
v Power-on switch
v Service processor menus
Privileged users can power on the system by selecting the System Control Power Menu option from
the main menu and then selecting the Power-on System option from the System Power Control Menu.
General users should select Power-on System on the General User Menu.
v Remote Power-on using Ring-Indicate Signal
The system automatically powers on when it detects a "ring indicate" signal from a modem attached to
serial port 2 (S2).
A remote user can call the system to activate ring-detection by the modem. Listen for a few more rings
than the threshold number for starting the system. The system powers on without answering the call.
v Unattended start mode - refer to Enable/Disable Unattended Start Mode on page 265.
The service processor can be enabled to recover from the loss of AC power (see Enable/Disable
Unattended Power-On Mode in the SYSTEM POWER CONTROL MENU). When AC power is restored,
the system returns to the power state at the time AC loss occurred. For example, if the system was
powered on when AC loss occurred, it reboots or restarts when power is restored. If the system was
powered off when AC loss occurred, it remains off when power is restored.
v Timed power-on - refer to the shutdown -t command.
Working in conjunction with the operating system, the service processor in your system can operate a
timer, much like a wake-up timer on your alarm clock. You can set the timer so that your system powers
on at a certain time after shutting down. The timer is battery-operated, so power interruptions that occur
while the system is off do not affect its accuracy. Refer to the shutdown -t command for details on
setting the timer.
Note: If an AC power loss is in progress when the timed power-on attempt occurs, the system cannot
power on when AC power is restored.
v Follow-up to a Failed Boot Attempt
The service processor initiates a power-on sequence if a failed boot attempt is detected (due to a
hardware or software failure).
v Fast or Slow Boot (IPL)
Using the service processor menus, you can select the IPL type, mode, and speed of your system.
Attention:
If you select fast IPL results, the system skips several diagnostic tests and runs a shorter
memory test.
Chapter 9. Using the service processor
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