The components replaced must be completely the same models as the original.

Caution: replacing optical pick-up

Laser lens are fragile items . To prevent damage the laser diode 

1. Don't touch the area around the laser diode or the actuator;

2. Don't check the laser diode with a tester or other device ( the laser diode will be broken easily );

3. Short -circuit the laser pick-up .

* Don't forget to remove jumper (Solder Bridge) after finishing repair with soldering iron.