| 摘要 |
PURPOSE:To reduce a production cost as a whole by simultaneously executing inspection of a light output circuit and a photodetecting circuit before assembly of a circuit board to an image recorder. CONSTITUTION:A substrate 12 constituting the circuit board 10 is previously formed with a V-groove 14 for sepn. between a first substrate part 12A and a second substrate part 12B formed with the photodetecting circuit. The first substrate part 12A and the second substrate part 12B are separated by bending the substrate 12 in the V-groove 14 part. Light of the intensity meeting the intensity of the light emitted from a laser diode 16 is made incident on an SOS sensor 24 from an LED 26 simultaneously when the light output circuit is driven by an inspection device 30 and the light is emitted from the laser diode 16. Then, the photodetecting circuit is driven. As a result, the abnormality of the light output circuit and the photodetecting circuit is simultaneously decided before the sepn. of the substrates by the inspection device 30. |
