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Random Display or 888
If the display is showing random numbers or all the LEDs are lit up, it is possible that there is a connection
problem.
In addition, disconnect and reconnect the cable for the Control Panel.
If reconnecting the Control Panel doesn’t work, try replacing the Control Panel with a new one.
If the above steps do not solve the issue, proceed with replacing the PCB. Refer to the section replacing
the PCB for more details.