On Tue, 06 Nov 2012 10:54:57 -0500, in sci.electronics.repair you wrote:

SNIP

Hi,
UPDATE:

Well I was wrong. There is a switch, but it is tiny on the left side.
You can not see it unless the tray is all the way out. Before, when I
pulled the plug, I guess the tray was not all the way our. Note: This
is not a leaf type switch but more like a "micro switch", and very small.

Thanks to everyone for your responses.

John