What should be done if the input side fuse of the power supply has become fused?

What happens during use if the sensing wires are accidentally left open?

Please explain the checkpoints for when there is an operational failure.

Please explain the checkpoints for when there are no outputs.

Please explain the checkpoints for when the output voltages are low.

Please explain the checkpoints for when the outputs are abruptly stopped.

Please explain the checkpoints for when the outputs are unstable.

Please explain the checkpoints for when the ripple and noise are high.