How do you change the glass on an Epson Perfection V600 Photo Scanner

How do you change the glass on an Epson V600 Scanner? The repair for the broken hinge was very helpful in removing the lid and locating the screws to remove the glass assembly. It also recommends leaving the ribbon cable attached, but to change the glass assembly will require the removal of the switches in the front of the machine. It looks like the ribbon cable is attached to those switches. So does the ribbon cable need to be disconnected? If so is there anything special I need to know to disconnect it? Or can the switches in the front of the glass assembly be removed leaving the ribbon cable attached to the switches. Any suggestions would be helpful.

Thanks,

Mike