
B–70114EN/04
6. TROUBLESHOOTING
144
No. Cause of trouble Solution
1 External laser gas pipe ab-
normal
Improve the external pipe. The pipe
should be installed in such a way that
neither material chips nor impurities are
released. There shall be no gas leak-
age.
2 Gas composition ratio ab-
normal
Replace the laser gas with one that sat-
isfies the specification.
3 Discharge tube abnormal
It is necessary to replace or adjust the
4 PCB abnormal
part. Call the FANUC service center.
5 Laser power supply abnor-
mal
6 Laser power supply malad-
justed
7 Pressure sensor abnormal
Shutter anomaly (Related DGNs are shown below.)
This alarm is issued, when the shutter does not work correctly in response
to the shutter open/close instruction. The cause of the fault and the
required action are described below.
No. Cause of trouble Solution
1 Shutter clamp not removed.
It is necessary to replace or adjust the
2 Anomalous detecting posi-
tion
part. Call the FANUC service center.
3 Anomaly of position detect-
er
4 Shutter cam loosened.
5 Shutter balancer loosened.
6 Intermediate PCB B, oscilla-
tor IF PCB, or NC IF PCB
abnormal
7 Anomaly of cables connect-
ing each PCB.
3. Solution
Alarm No. 4065 [665]