B-70315EN/02 5.TROUBLESHOOTING
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No. Cause of trouble Solution
4 Leakage in vacuum
system or water
leakage
Locate the leakage, and replace the
defective part.
5 The gas flow control
valve is closed
Adjust the gas flow control valve to obtain
the specified gas flow rate.
6 Matching box
abnormal
Replace the matching box.
7 Crack or pinhole in
discharge tube
Replace the discharge tube.
ALM No.4067
LASER CABINET OH (detected by the C2000-E only)
The temperature of the input side of the electrode cooling fan is
monitored and sends alarm when it exceeds 60
°C.
When the temperature decreases below the prescribed value, the
alarm state can be solved by resetting. Before that, it cannot be
solved.
Alarm output condition
This alarm is issued if the "temperature in the cabinet" signal becomes
"0" after the start of the oscillator and immediately before the completion
of purging.
Related data
DGN.961 #1 *CAT Temperature in the cabinet
No. Cause of trouble Solution
1 Excessive environmental
temperature
Lower the ambient temperature by
ventilation (5 to 30°C)
2 Excessive cooling water
temperature
Set the temperature of the cooling water
to within an appropriate range (20 to
30
°C).
3 Anomaly of cooling fan motor Replace the cooling fan motor.
4 Anomaly of temperature
sensor
Check the continuity of the temperature
sensor. If any disconnection is found,
replace the temperature sensor.
5 Anomaly of oscillator IF PCB
(A16B-2100-0142)
Replace the faulty PCB.
6 Anomaly of connecting
cables between the PCBs.
Check the connection of each cable.
ALM No.4068
BEAM REFLECTION
This alarm is issued, if a workpiece reflects laser beam more than
the rating to the laser oscillator. This can happen when the laser
beam is used to drill, cut, or weld materials (such as copper, brass,
and aluminum) having a high reflectivity to the laser beam (10.6
µm).