eject the tray and take it out completely ... you see that the "laser module is down and seeing the tray in front of the left side, where the motor that ejects said tray is a lever type as with a black" plastic bushing "that it is the one that must enter the upper tray (where there are 3 trays to place the CDs) and that's it, you just drive it in or leave it so you connect the corresponding flexes and when you turn on the equipment you should only Enter the chatter and then upload the laser module and search for tracks, as you will see it is not science to place this type of tray in time ....