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Return to "Fun Stuff"
DVD R+/R-/RW Drive
Page 2
This picture shows the normal tray loading procedure. The tray slides back to the frame and the motor spins the disc. Then the lens assembly takes over and shoots a LASER beam to the disc, and then based on the commands from the computer, the lens moves up and down the shafts to search for data at the beginning or at the end of the disc.
A close-up of the lens assembly
Here is the frame without the tray. There are various sizes of gears at the right side of the frame. The tray has a groove which fits in the largest gear (top right most), and when the gears turns clockwise, the tray comes out, and vice versa.
The bottom part of the frame.
The PCB with the user input panel facing front. The red highlighted box shows the LED. yep, this is the thing that gives the cute green glow when the drive is busy. The blue box shows the PLAY/PAUSE button, but the tray door didnt have a button which clicked on this switch. The yellow box is the EJECT button. This button triggers the tray gears which parks the lens assembly in its "idle" position, and moves the tray out. Sorry about the picture, I was just not able to focus it well ;-)
This is what is inside the drive when only the tray is out for you to load a disc. The cap which is set beside the frame, actually is supposed to be attached on top of the frame, just above the disc motor. But I have it set at the side so that you can see the lens assembly. The picture on the right shows the drive with the cap on (there is also a disc in the tray).
This is the entire drive without the casing, and the disc cap, which lies on top. The main function of the cap is to hold the disc in place, just so that the disc doesnt jump out of its place when its rotating at a high speed.
Finally, here is everything that came out from the drive. 1. The disc cap. 2) The PCB. 3) The frame which houses the tray, the drive and lens assembly. 4) The tray which holds the disc. 5) The casing which keeps everything in place.
Finally, thats me explaining the actual working of the drive to everyone in the room, around 25 people... and also explaing my dad so as to why I need to take things apart. Hey... you gotta take it apart to learn!!