
5.TROUBLESHOOTING B-70315EN/02
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See the following table, and check the operation status.
[Open] command
DGN No.973 #0=1
[Close] command
DGN No.973 #0=0
Shutter open state signal
DGN No.961 #4
1 1 0 0 1 1 0 0
Shutter close state signal
DGN No.961 #5
0 1 0 1 0 1 0 1
Normal/Abnormal O X X X X X X O
No. Cause of trouble Solution
1 Shutter clamp not removed. Remove the shutter clamp.
2 Anomaly of shutter position
detector
Replace the position detector.
3 Shutter cam loosened. Tighten the screw again.
4 Shutter arm section caught Eliminate the cause of the problem.
If the problem cannot be solved,
replace the unit.
5 Intermediate PCB B
(A16B-1600-0363) is faulty.
Replace the intermediate PCB B.
6 Anomaly of cables
connecting each PCB.
Check the connection of each cable.
ALM No.4066
DISCHARGING
After the discharge start (HV ON) signal is turned on, the
discharge starts. At this time, this alarm is issued if at least one
discharge tube does not discharge and causes high voltage.
Alarm output condition
When the HVON signal is turned on, the discharge tubes are started up
to the maximum specified with the bias command in six seconds. Then,
after the time set with parameter No.15222 has elapsed, the voltage of
each discharge tube is compared with the setting of parameter
No.15221. This alarm is issued if the voltage of at least one discharge
tube exceeds the setting of the parameter.
Related parameters
PRM.15220 Maximum bias command value
PRM.15221 Discharge start check voltage
PRM.15222 Discharge wait time
PRM.15223 Bias command
Related data
DGN.909-914 Discharge tube voltage and current
G222 #7 HVON Discharge start signal
No. Cause of trouble Solution
1 Anomaly of parameter
setting
Make a setting using the values of
parameters listed in the parameter table
attached to the machine.
2 Anomaly of laser gas
composition
Use the laser gas with the specified
composition accuracy.
3 Discharge tube
electrode mounting
bracket loosened
Check the electrode contacts, and secure
any loose mounting brackets.