I have found a Sony AD-7280S DVD-RW drive,and the laser inside it is in working condition. I have taken it out,but surprisingly it has three pins. I want to know the pinouts of this specific diode. As reverse current for the Laser diodes is only 10uA max,I can't take the risk of trial and error method. The laser Diode has the three pins named as "D","G","C". I wonder what do these letters stand for.
Since the writer was intended for both CD and DVD,I expected another IR diode as well,but there was none. So I am assuming that the RED laser and the IR Laser is built in the same package. Inside the Laser mechanism,there were this diode and another semiconductor chip,that looked like the detector. Can anyone confirm me what do the letters stand for? Is there any way to find the proper pinout of the diode without the datasheet?