| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an LED control apparatus which can reduce wires to be arranged of a harness in a simple constitution when an LED substrate and a control substrate are connected by the harness. SOLUTION: At the substrate 100 of a panel part, one terminal of a switch 101 is connected to a source line connected to anodes of LEDs 110-113, and the other terminal of the switch 101 is connected to an output terminal 119. At the substrate of a printing control part 96, an input terminal 126 and a port SW of an ASIC 130 are directly connected with each other, which is pull- down connected by an R5. At the ASIC 130, a judgment logic to a switch input is set to a positive logic (high active). A connecting line of the harness 120 for the switch 101 can be an L6 alone, and a connecting line to be connected from the source line of the switch 101 to the port SW of the ASIC 130 is saved.</p> |
