Liquid Discharge Apparatus And Head Unit

A liquid discharge apparatus comprising:

• a head including
• a first discharge section that includes a first drive section driven by a first drive signal and that discharges liquid onto a medium in response to driving of the first drive section, and
• a second discharge section that includes a second drive section driven by a second drive signal and that discharges liquid onto the medium in response to driving of the second drive section;
• a transport section that transports the medium;
• a first drive circuit that outputs the first drive signal;
• a second drive circuit that outputs the second drive signal;
• and
• a startup control circuit that controls startup of the first drive circuit and the second drive circuit, wherein
• a head power supply signal is supplied to the head,
• a drive circuit power supply signal is supplied to the first drive circuit and the second drive circuit,
• the first drive circuit outputs a signal for stopping output of the head power supply signal from a power supply circuit when the head power supply signal is equal to or lower than a predetermined voltage,
• the second drive circuit outputs a signal for stopping output of the drive circuit power supply signal from the power supply circuit when the drive circuit power supply signal is equal to or lower than a predetermined voltage, and
• the startup control circuit starts a startup sequence of the first drive circuit, and then starts a startup sequence of the second drive circuit.