Diagnostics
8
8.1 Error messages
These error messages are shown on the 7-segment display (Page 31) as continuously running
text ("ticker").
Note
When submitting a query to the SIEMENS Technical Support Service: In addition to the
message shown on the 7-segment display, additional information regarding the status LEDs
and the operating state (continuous operation, switch-on phase, restart, etc) can provide
important information on resolving your problem.
7-segment display Meaning Troubleshooting
C "Crash" or kernel panic: The Linux system no longer
responds
1. Restart the NCU.
2. Execute the "DIDAC" diagnostics option.
This function saves all the diagnostic data
to a ZIP file.
3. Contact the SIEMENS Technical Support
Service and transfer the zipped diagnos‐
tics data.
Copy FAIL The FWH installation was unsuccessful.
F "Failure"
F. The point is continuously lit and no longer flashes:
NCK crash
Lxx=yyy Internal error when starting NCK, "xx" is the line
number in the mcsystem.ini, "yyy" is a unique error
code for the code position.
Merr "Mixer Error": An error has occurred.
● Check the log file under "/var/log/initn‐
cu.log".
● Contact SIEMENS Technical Support
Service.
NO ARC The CNC software package is missing or cannot be
found on the SD card.
Boot the NCU using the SINUMERIK service
system, and check the partition using the
"Check storage integrity" diagnostics option.
● Replace the SD card if it is shown to be
defective.
● Contact SIEMENS Technical Support
Service if the SD card is not defective.
NO SD The operating system cannot detect an SD card.
● Insert the SD card.
● Check that the SD card is correctly inser‐
ted.
● Check whether the SD card is defective.
NO SSD The internal storage medium was not detected. Contact SIEMENS Technical Support Service.
PART FAIL Error when repartitioning Boot the NCU using the SINUMERIK service
system, and check the partition using the
"Check storage integrity" diagnostics option.
NCU 1760
Equipment Manual, 02/2020, A5E45627861B AB 85
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