KFAS: Fanuc CNC Parts, Service, & Repair
Phone: (281) 769-2671F
E-mail: service@kfasllc.com
Fanuc Series 0T/ 0M Troubleshooting Information/ Procedures/ Alarms
Fanuc 0TC/ 0MC Maintenance Manual: B-61395E
Fanuc 0TD/
0MD Maintenance Manual: B-62545E
Alarm List and Description
Absolute Pulse Coder (APC) Alarms: Alarm 3n0 through 3n7 (n = 1 - 8)
Troubleshooting Steps
Alarm 3n0 (n = 1 to 8): Request for reference position return
Alarm 3n1 to 3n6: Absolute Pulse Coder is faulty
Alarm 3n7, 3n8: Absolute Pulse Coder Battery is low
Alarm 3n9: Serial Pulse Coder is abnormal
Servo Alarms: Alarm 400 through 495
Alarm 408: Serial Spindle link does not start normally
Alarm 409: Serial Spindle Alarm
Over travel Alarms 5n0 through 5n5, 520, 590, 591, 592, 593
System Alarm: 910 through 916, 920, 921, 922, 930, 940, 941, 945, 946, 950, 960, 998
Alarm 910 to 916: RAM Parity Error
Alarm 920, 921, 922: Watch dog alarm or RAM parity alarm
Alarm 941: Incorrectly installed Memory Printed Circuit Board
Alarm 945: Serial Spindle communication Error
Reader/Puncher RS232 interface alarm: Alarm 85 to 87
Check RS232 related parameter settings
