Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 93)

PC NC Maintenance Manual Chapter 4: Troubleshooting
4-72
AL-F2:EEPROM is defective 2.
Error Contents The memory (EEPROM) is defective. [EEPRM initialization code
error]
Cause and measures
AL-F3:EEPROM is defective 3.
Error Contents The memory (EEPROM) is defective. [BCC check error]
Cause and measures
AL-F4:EEPROM is defective 4.
Error Contents The memory (EEPROM) is defective. [defective write-in at on-line
mode]
Cause and measures
Cause Measures
The parameter initialization operation
incompletion. Initialize the parameter operation.
Control card fault Exchange unit (exchange control card)
Cause Measures
Parameter initialization operation incompletion. Initialize the parameter operation.
Control card fault Exchange unit (exchange control card)
Cause Measures
Control card fault Initialize the parameter drive.
Exchange unit (exchange control card)