
B–70115EN/03
6. TROUBLESHOOTING
147
Overheat of laser cabinet (Refer to DGN = 961/bit 1 [841/bit7])
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, the alarm state is solved automatically. Before
that it cannot be reset.
No. Cause of trouble Solution
1 Excessive environmental temperature Reduce the ambient tem-
perature (to 5°C to 30°C).
2 Excessive cooling water temperature Change the temperature
setting of cooling water to a
normal temperature (20°C to
30°C).
3 Anomaly of cooling fan motor Replace the cooling fan mo-
tor.
4 Anomaly of temperature sensor Check the continuity of the
temperature sensor. If any
disconnection is found, re-
place the temperature sen-
sor.
5 For FS0–L:
Oscillator IF PCB (A16B–1110–0223) or
CNC IF PCB (A16B–1212–0270) is faulty.
For FS16–L, FS16i–L:
A16B–2100–0080, A16B–1110–0260,
A02B–0128–C202 (unit specification), or
A16B–2100–0141 is faulty.
Replace the faulty PCB.
6 Anomaly of connecting cables between
the PCBs.
Check the connection of
each cable.
Alarm No. 4067 [667]