IDEC FT1A Series

14: T ROUBLESHOOTING
14-18 S MART AXIS P RO /L ITE U SER ' S M ANUAL FT9Y-B1378
Troubleshooting Diagram 11
*1 "SmartAXIS Pro - The Backlight is not On" on page 14-9 or "SmartAXIS Lite - The Power/Run Status LED (PWR/RUN) is not On" on page 14-10.
SmartAXIS Lite: When the power/run status LED is
not on
*1
SmartAXIS Pro: When the LCD backlight is not on
*1
SmartAXIS Lite:
Is the power/run status LED on?
SmartAXIS Pro:
Is the LCD backlight on?
Is the
communication cable
connected correctly?
Call IDEC for assistance.
Make sure of correct wiring.
YES
YES
Is the input to the
TXD instruction on?
Turn on the input to the TXD instruction.
NO
NO
NO
YES
Data is not transmitted at all
in the user communication mode.