How to replace the laser diode in a CD laser head
Replacing the laser involves opening the CD player, removing mechanical components, and installing the new pickup. I'll show you instructions for this model but you'll probably be able to adapt them if you. The laser assembly, known as the optical pickup unit (OPU), is responsible for reading the microscopic pits on a CD's. The problem is, that after diode replacement the laser beam fails to locate in the middle of the photodetector IC (also known as PDIC).
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