Where do I find the switch that closes the cover?

The unit should run when out of the cabinet on its track glides. However the small cover lid (door) on top of the machine where you would put Ground Coffee in has a switch sensor on it. The cover acts as a magnetic switch and it must be in the closed position. My display says "close the lid" if left open. Since Thermador tells you to call a repairman for everything (which is hard to find one that can work on it) I've had to take every cover off for dis-assembly and repair. With all covers off the machine the only thing I had to do was to "Jump" the ground coffee wire connecter to make it run with no covers on. It makes great coffee but tough to get repaired. Let me know if that was it.

Possibly because upon closing it the cover didn't press down the switch for some reason, just look around inside it, and check if there's any piece of paper covering the sensor or the sensor switch might be visible and broken.

Open the printer cover and remove the cartridges. Close the cover. Unplug and replug the printer into the power outlet to reset it. When the printer turns on, reinsert the cartridges. Make sure the cartridges are properly inserted in the carrier and the lids snap in.
Source: Error: 'Cover open, please close the cover'

When you flip the main cover up, and flip the CD/DVD tray down, look at the cartridge color guide label (the colored dots). See the LIGHT CYAN dot? Directly across from that dot around underneath the gray cover is supposed to be a little plastic fin. That fin pushes the sensor switch in the CD/DVD tray to let the printer know if it is open or closed. If it breaks off, then the printer always thinks the tray is open. If it's broken off, you will have to either stick a toothpick or something into the switch, or glue a new thin piece of plastic in its place.

The printer displays a 'Cover open, please close cover' error message, even though the cover is closed.

This can happen if the lever on the cover open sensor is knocked off the switch assembly.

Your printers top cover is closed. Its generating error just because of faulty sensor. You require to change the sensor. If you are assured that you can do it yourself with our guidence then kindly comment back, or else simply take it to a technician.

Open that cover and look in the frame of the machine for an opening. Then look on the upper cover. There is an interlock switch on the machine. The plastic tab on the upper cover often times breaks off and will not actuate the switch, giving you that message.
You can fix it by gluing a paper clip onto the cover. Or call 1-800-835-6100 and order a new cover.

On Many of these printers, when you recieve this message chances are you either have a "BENT" limit switch sensor or the Tap on the Cover is "Broken or Broke off",
First Step open each cover and close them again sometimes the limit switch isn't being hit correctly by the door Tab

Second- as you open the covers their are tabs that must hit these sensors- make sure their not broken or bent.

Start their and tell me if these resolves the problem chance are the tabs are not hitting the switches correctly and not telling the samsung printer that the covers are closed.

hte back cover has a little micro switch.
open the back cover, make sure there is nothing preventing from closing tight. close the back cover tight. if you have to, use tape to secure it.

There is an interlock switch or sensor on all the covers. You need to open the cover and look for an opening in the cover it closes against. In those openings there are normally switches that a tab turns on to let the machine know the cover is closed.
The switch may have become dislodged, or more likely, the tab on the cover that hits the switch to actuate it has broken off and is not hitting the switch giving you that message.