A3acpu Panel is garbled

Time:2016-5-4 16:56:11

I plant tvices A3acpu using A3acpu Mitsubishi a3a series CPU led display is garbled, and ad75p3-S3 led is garbled, but the device power on properly, and no exceptions! What problem, how to solve

PLC error you can display LED display lights, alarm relays, PLC data clock or special instructions specifying content, please see exactly what was the cause of, thank you.