Patent ID: 11930576
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 2:
3. The image forming device according to claim 1,
wherein the LED controller board further comprises a second voltage conversion circuit electrically connected between the third voltage terminal and the LED head,
wherein the second voltage conversion circuit is configured to:
convert the first voltage to a third voltage and output the third voltage to the LED head; and
output a Low signal, as a detection signal, to the LED controller in a case where the third voltage is less than a particular voltage necessary for driving the LED head, and

wherein the main controller is configured to obtain information indicating whether the detection signal is the Low signal from the LED controller via the control wiring and detect whether the third voltage is less than the particular voltage.