CRC CHECK ERROR:NC BASIC.
CRC CHECK ERROR:NC BASIC.
Fanuc · Alpha i Series Servo Amplifier
What does CRC CHECK ERROR:NC BASIC. mean?
A CRC error occurred in the CNC BASIC ROM. This indicates data corruption in the Read-Only Memory module containing the CNC BASIC program, which can prevent the CNC from functioning correctly.
Common Causes
- CRC check failure on the NC (Numerical Control) basic software modules.
- Corruption in the core NC firmware or operating system.
- Data integrity issue with essential NC program files.
- Failed firmware update of the NC system.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Install the CNC BASIC ROM in flash memory again.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fanuc Alpha i Series Servo Amplifier