5.1 Replacing NX100 Parts
5-9
Replacing the I/O Circuit Board (JANCD-NIO01)
Replacement Procedure
1. Follow the replacement procedures 1 to 5 of " Replacing the Robot I/F Unit (JZNC-
NIF01) " to remove the robot I/F unit from the CPU rack.
2. Remove five screws fixing the I/O circuit board (JANCD-NIO01) and the robot I/F cir-
cuit board (JANCD-NIF01).
3. Disconnect the I/O circuit board and the robot I/F circuit board with due care.
4. Connect new I/O circuit board (JANCD-NIO01) to the robot I/F circuit board (JANCD-
NIF01) with the onboard connector.
5. Tighten five screws to fix the I/O circuit board (JANCD-NIO01) and the robot I/F cir-
cuit board (JANCD-NIF01).
6. Insert the robot I/F unit into the slot of the CPU rack.
7. Tighten upper and lower screws of the robot I/F unit.
8. Connect all cables disconnected in the procedure 1.
• Turn OFF the power before replacing the I/O circuit board (JANCD-NIO01).
• Be sure to back up robot data before replacing the robot I/F unit since the robot I/F unit
contains important data such as robot jobs and parameters.
• Before removing the robot I/F unit from the CPU rack temporarily, turn ON the system
power and charge the onboard capacitor for one hour. The CMOS data on the robot I/F
unit are kept temporarily by the onboard capacitor power. The capacitor is fully charged in
one hour, and discharged in 16 hours when the I/F unit is removed from the CPU rack.
If the capacitor is discharged, the CMOS data will be cleared and all the system settings
and user settings will be lost.
Refer to the procedure 10 of " Replacing the Robot I/F Unit (JZNC-NIF01) " to recover
data.
NOTE
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