Error insert tray, the printer don't see the tray, I think the sensor tray is broken. How can I change it? And how can I order it (someone know the part number?)

Check the sensor for tray #2. Another remove the tray #2 check for broken acturator and or broken tabs that go into the machine to indicate the printer draw two is closed. Lift the printer off tray two use just one and bypass does that work eliminates the circuit board of the machine.

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SC285 is a line position adjustment error. It is possible the ID sensors are dirty. In order to get to them you have to remove the PCUs and developers as well as the transfer belt assembly. The sensors are behind the shutter that is next to where the upper most PCU would be inserted.

i think the printer has 2 trays, one down and the other one on top from where you insert the paper. load the paper there as well. if there is only one tray then check the paper sensor in the bottom, if the paper end sensor comes out of position then it will not detect the paper.

Dell 3100cn Color Laser Printer Error 024-965 - Load Tray 1

Cause:
The "Paper Tray Inserted" sensor buttons are not being depressed by the Paper Tray so the Printer thinks no Tray is inserted even if the Tray is properly inserted.

If you pull out the paper tray and look at the Paper Tray opening, you will see three white vertical sensor buttons along the left-hand side at the mouth of the aperture where the paper tray slides in. These three white vertically aligned push button sensors tell the printer that the Paper Tray is inserted when the paper Tray is
properly pushed all the way in and aligned. It also signals to the printer by noting which button is depressed whether the tray is a Letter Size or Legal Size tray that has been inserted. These buttons which are fully visible as soon as the tray is slid out can move out of place and even fall into the wall of the Tray slot preventing the buttons from sensing the tray.

Solution:
Click it back into place. There should be no play and the buttons themselves should be the only thing that move and then only in an in and out manner. They should move out toward you when the Tray is removed and be pushed in when the tray in slid into the paper tray feedering slot. A pair of needle-nose pliers may be necessary to draw the button module out of the tray slot wall if it has fallen in. Once it is STIFFLY repositioned and the Paper Tray reinserted, reset the printer by opening and quickly reshutting the printer cartridge compartment. This action will recalibrate the printer, shut off the amber error light and resume the current printing job if one was in progress.

Good luck!

if this unit is a bit older, than it's possible that the sensor switch is stuck

http://tinyurl.com/6qcpgy

The extension at the back of the tray has broken off, so the machine doesn't recognize that the tray has been put back in. Solve this by taking a piece of cardboard (business card works good), fold it up and insert it into the sensor at the far left where the extension would have gone when the tray is inserted. This will trick the machine into thinking that the paper tray has been inserted.

Maybe your paper sensor flag is stuck or broken if you pull the tray out of the machine there should be a little black plastic sensor flag hanging from the top middle of the slot where you pulled the tray out from if its stuck up or broken the tray will always sense its full of paper.

What is the exact error message shown on the display ?
Does it makes any strange noise when you start it up ?

Linda,

On printer check media/paper type tray 2 or 3 is plain and tray 2/3 is set for letter paper size too, via printer control panel. Also check under paper handling other options for tray 1, also on tray 2 and 3, I think there is a blue little round switch on left should be set as letter not custom.

Some paper types cannot be feed from anywhere else but tray1/bypass ie labels/laminate/card stock.

Check print driver on pc has tray 3 option installed and is not set as default to print to manual bypass/tray 1

light flashing cause printer wants paper type/size that it "thinks" it hasn't got in tray 2/3

If that dont cover it...post back

Soulvisitor :-)

There's a little plastice lever type thing that hangs down above where the paper tray is inserted. When the paper tray pops up after being inserted, the paper moves this lever up. This is how the printer knows if there is paper or not. With the tray out, push the little white lever up and see if the "No Paper" message goes away. If it does go away, the lever/sensor is working OK, if not the lever sensor is bad. If that was not the problem, check that the paper tray is popping up after being inserted (look from the back of the device while you insert the tray). If it does not pop up, there is a little white plastic button type thingy on the side of the tray that releases the paper tray to pop up after you insert it into the printer. Make sure that is working correctly. If you flip the pritner upside down, you can see this little white plastic button type thing that should release the paper tray to pop up during the insertion process.