Fujitsu Siemens Computers 21P4 - Manual (Page 25)

Colour monitor 21P4
A26361-K886-Z100-1-5E19 English - 23
No display (power indicator does not light)
Ê Check whether the monitor is switched on.
Ê Check whether the power cable on the monitor is connected correctly.
Ê Check whether the computer is switched on.
No display (power indicator lights)
Ê Check whether the computer is switched on.
Ê Check whether the data cable for the monitor is correctly attached to the monitor port on the
computer.
Ê Check whether the monitor connection of the computer used is active.
Ê Press any key on the computer keyboard – the computer may be in energy saving mode.
Ê Change the brightness and/or the contrast; the monitor may be adjusted to the maximum dark
setting.
Error messages on the screen
Sync. Out of Range
The input signal (horizontal frequency and refresh rate) does not correspond to the technical
monitor data.
Ê Adjust the video frequency range using the computer software (see documentation for your
computer or your graphics card).
No Connection
Check Signal Cable
The monitor does not recognise an input signal.
Ê Check whether the computer is switched on.
Ê Check whether the power cable on the computer is connected to a mains outlet with earthing
contact.