
7 - 4
7 - 4
7. TROUBLESHOOTING
7.2.3 Flow when the “EXT.PW” LED turns OFF
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Flow when the "EXT.PW" LED turns OFF
Is the polarity correct?
NO
YES
NO
YES
Set the polarity correctly.
Is the wiring correct?
Correct the wiring.
Is the external
power supply ON?
Is the external
power supply voltage within
the specified range?
Is the power
supply capacity of the power
supply module OK?
Is the "EXT.PW" LED ON?
End
Turn ON the external power supply,
and then reset the CPU or the RFID
interface module.
Adjust the power supply voltage to within
the specified range, and then reset the
CPU or the RFID interface module.
Investigate selection of the power
supply module used once again.
Please consult your local
representative, explaining a detailed
description of the problem.
Is the "EXT.PW" LED ON?
Is the "EXT.PW" LED ON?
The power supply capacity may be
insufficient. Calculate the current
consumption.
Reset the CPU or the RFID interface
module.