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Error Diagnosis
6.3
The Screen Display Does not Appear or Drifts
Cause and Remedy
Either the incorrect line frequency and/or the incorrect resolution is set for the
screen or for the user program.
S Stop the user program. If the error still occurs after you have ended the
program, switch off the monitor. After at least three seconds, switch on the
monitor again.
S Adjust the relevant entries for the monitor in the CONFIG.SYS file (on the hard
drive).
S Correct the settings for the monitor and graphics in your user program.
S Select the correct screen driver for your user program.
6.4
No Mouse Pointer Appears on the Screen
Cause and Remedy
The mouse pointer may not appear for the following reasons:
The mouse driver is not loaded
S Check whether the mouse driver is correctly installed. Check whether the
mouse pointer is present when you start your user program. Refer to the
manuals for the mouse and user program to obtain detailed information about
the mouse driver.
The mouse is not connected
S Switch off your PC.
S Check whether the mouse cable is connected to the system unit correctly. If
you use an adapter or an extension cord for the mouse cable, also check their
plug-in connections.
S Switch on your PC.
Note
If the mouse pointer still does not appear on the screen after you have performed
these checks and measures, please contact your technical support team.
6-4
SIMATIC Box PC 840 Manual
A5E00085984-04
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