Jam detection device, conveying device, image recording apparatus, and connection status detection method

A jam detection device comprising:

• a synchronization signal generation unit that generates a conveying synchronization signal for synchronization with a conveying operation of a conveying device including a processing unit configured to process cut sheets while conveying the cut sheets, a first conveying unit configured to transfer the cut sheets to the processing unit, and a second conveying unit configured to receive the cut sheets from the processing unit;
• a first detection sensor that is provided to face the first conveying unit and outputs a first output signal in response to passing of the cut sheets;
• a second detection sensor that is provided to face the second conveying unit and outputs a second output signal in response to passing of the cut sheets;
• a timing signal generation unit that generates a timing signal for defining detection timings of the first output signal and the second output signal;
• a board to which the first output signal, the second output signal, and the timing signal are input;
• a first wiring through which the timing signal is input to the board;
• a second wiring through which the conveying synchronization signal is input to the board;
• a conveying error detection unit that is disposed on the board and detects conveying errors of the cut sheets by detecting conditions of the first output signal and the second output signal at the detection timings;
• and
• a connection status detection unit that is disposed on the board and detects a connection status of the first wiring by comparing the conveying synchronization signal with the timing signal.