Troubleshooting
FPΣ User's Manual
266
11.5 All LEDs are OFF
If all LEDs are OFF, try the following:
• Check the power supply wiring.
• Check if the power supplied to the CPU is in the range of the rating. Be sure to check
the fluctuation in the power supply.
• Disconnect the power supply wiring to the other devices if the power supplied to the
CPU is shared with them.
- If the LEDs on the CPU turn on at this moment, increase the capacity of the power
supply or prepare another power supply for other devices.
- Please contact your dealer for further information.
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