
B–70114EN/04
6. TROUBLESHOOTING
142
See a list of alarms in an appendix at the end of this manual. The alarm
number, DGN, and parameter number (PRM NO.) vary with the CNC
model. So, the FS–16L number comes first, and the FS–0L number is
enclosed in parentheses.
Anomaly of AD converter 1 (Refer to DGN = 981 [844, 845/bit 7])
FS0–L: AD converter 1 on Printed Circuit Board A16B–1212–0270
(CNC side) is not normal.
FS16–L, FS16i–L: AD converter 1 on Printed Circuit Board
A16B–1110–0260 or A16B–2100–0141 (oscillator
side)
No. Cause of trouble Solution
1 Anomaly of AD converter 1 It is necessary to replace AD converter
1. Call the FANUC service center.
2 Anomaly of printed circuit
board
It is necessary to replace the oscillator
interface printed–circuit board. Call the
FANUC service center.
Anomaly of AD converter 2 (Refer to DGN = 982 [846, 847/bit 7] )
FS0–L: AD converter 2 on Printed Circuit Board A16B–1212–0270
(CNC side) is not normal.
FS16–L, FS16i–L: AD converter 2 on Printed Circuit Board
A16B–1110–0260 or A16B–2100–0141 (oscillator
side) is not normal.
No. Cause of trouble Solution
1 Anomaly of AD converter 2 It is necessary to replace AD converter
2. Call the FANUC service center.
2 Anomaly of printed circuit
board
It is necessary to replace the oscillator
interface printed–circuit board. Call the
FANUC service center.
Laser power supply unit protective operation or failure
(Refer to DGN 966, 967, 974, 975 [842, 854].)
This alarm is issued, if a fault occurs in the laser power supply unit. The
cause of the fault and the required action are described below.
The laser power supply unit issues this alarm and stops operation to
protect itself, even if a fault occurs outside the power supply. In many
cases, this alarm is issued when the laser power supply is normal. So,
sufficient investigation is necessary. If the power supply is turned on
without removing the cause of the alarm, the alarm will be issued again.
No. Cause of trouble Solution
1 Checking parameters Confirm that all the parameters de-
scribed in the attached parameter
sheets are correctly set.
In case there exists any error, correct it.
2 Checking cooling water
temperature
Confirm that the cooling water tempera-
ture is in the range of 20°C to 30°C. In
case it is not so, adjust it.
6.2
RESPONDING TO
ALARM MESSAGES
ON THE SCREEN
Alarm No. 4061 [661]
Alarm No. 4062 [662]
Alarm No. 4063 [663]
1. Preliminary inquiry