6.4.8 Booting of the TCU
6.4.8.1 Messages during booting
Messages when booting
While the TCU boots, a progress indicator is displayed with messages showing the current status
after the BIOS has been loaded and before the operating system is started. While the IP address
is being determined via DHCP and the TFTP is being downloaded (boot image), a progress bar
indicates that booting of the TCU is not yet complete, or that a fault has occurred.
You can see the current boot phase below the progress bar. If a fault occurs, you can call
further information by touching the "F1" eld.
6.4.8.2 Diagnostics options during booting
Diagnostics while booting supplementary conditions
In the following supplementary conditions, the diagnostics window is displayed and booting of
the TCU is interrupted:
• When the <1/F1> function is selected during booting
• When a warning message is displayed
• When a fault occurs
You can select functions <1/F1> to <8/F8> mentioned below by tapping on the Panel.
Alternatively, you can do this via the corresponding function keys of a connected USB
keyboard.
Networking
6.4Service and diagnostics
TCU 30.3
Equipment Manual, 03/2023, A5E40874197B AD 75
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