HEIDENHAIN iTNC 530 Service Manual page 357

If a defective unit or cable is the reason for the black screen:
Rear view BF 150
July 2010
Note
By means of a dongle for the USB interface, TNCremoNT can be enhanced to
TNCremoPlus. With this version you can view the control display on your service laptop.
You can call this function with the icon View TNC screen.
The symbol is part of the menu bar, next to the camera symbols.
The dongle can be ordered from HEIDENHAIN.
Note
If you can see the display information with TNCremoNT, it is still not 100% sure that all areas
of the graphics card are in good order!
Connect all connectors to the MC and CC one after the other (the machine must always be
switched off) and observe when the error occurs again (in this case the black screen).
Subsequently, search the error of the connected device including its cable.
Note
If you have found out that the screen itself is defective, then a further inspection of the
flat-panel display is not possible without special test equipment.
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