BECKHOFF CP22xx - Manual (Page 28)

Troubleshooting
6 Troubleshooting
Pixel errors
Note
Pixel errors in the TFT display are production-caused and represent no complaint-
reason!
Anomalies of the Touchscreen
Note
Anomalies of the touchscreen sensor are production-caused and represent no
complaint-reason!
Fault
Cause Measures
The Panel PC shows no function No power supply to the Panel PC
Cable not connected
Check power supply cable
1. Correctly connect cable
2. Call Beckhoff Service
Panel PC 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 Panel PC Call the manufacturer of the
machine or the software
The Panel PC functions only
partially or only part of the time, e.g.
no or dark picture Faulty backlight in the display
Defective components in the
Panel PC
Call Beckhoff Service
Call Beckhoff Service
Malfunction of the touchscreen Bad or missing ground connection
of the device Establish ground connection
Bad or missing ground connection
of the user User must stand on the floor
with ordinary shoes
26 CP22xx