Candy · MARS Series Vending Machines
During the Executive & IrDA Test Mode, this message indicates that the transmission of the test pattern failed in one or both directions. The beeper will also sound.
Click steps to track your progress.
Ensure the IrDA port and the loopback device are clean and unobstructed.
Verify the loopback device is properly connected.
Check the connections to both the Executive and IrDA ports.
Restart the test. If it continues to fail, consult service documentation.