Troubleshooting   
 
6 Troubleshooting 
 
Fault  Cause  Procedure 
Nothing happens after the Industrial 
PC has been switched on 
No power supply to the Industrial 
PC 
 
Other cause 
Check power supply cable 
 
Call Beckhoff Service 
The Industrial PC does not boot 
fully 
Setup settings are incorrect 
 
Other cause 
Check the setup settings 
 
Call Beckhoff Service 
Computer boots, software starts, 
but control does not operate 
correctly 
Cause of the fault is either in the 
software or in parts of the plant 
outside the Industrial PC 
Call the manufacturer of the 
machine or the software 
Memory device access error  Faulty device  Call Beckhoff Service 
The Industrial PC functions only 
partially or only part of the time, e.g. 
no or dark picture, but disk drive 
responds when switching on 
Defective components in the 
Industrial PC 
Call Beckhoff Service 
 
24  C6920/ C6925