FUJITSU T5140 - Manual (Page 25)

Chapter 1 Configuring the System Console 3
What the System Console Does
The system console displays status and error messages generated by firmware-based
tests during system startup. After those tests run, you can enter special commands
that affect the firmware and alter system behavior. For more information about tests
that run during the boot process, refer to the service manual for your server.
Once the operating system is booted, the system console displays UNIX system
messages and accepts UNIX commands.
Using the System Console
To use the system console, you need to attach an input/output device to the system.
Initially, you might have to configure that hardware, and load and configure
appropriate software as well.