Hi. This could be sendor is failing or there is a jammed paper on you printer.
How to removed jammed paper
1.Unplug all cables (USB and power)
2.Turn around the printer
3.In the back there should be a small door that on my printer (SCX-4300) flips upside.
4.Look for any jammed paper.
5.Pull out the jammed paper.
Here's how to fix the sensor
Unplug everything from the back and then remove the four screws from the back panel. Pull the panel out but watch that the on/off switch doesn't hang the cover up.Once off, I removed the screw from the mount holding the right end of the sensor stick while holding the mount in place with my finger. When the screw is out, lift the mount up and carefully slide it off of the stick. Carefully rotate the spring, topside away until the left side of the spring catches the sensor piece. Now rotate the other end of the spring once more around the stick and while holding it at the top of the stick (12 o'clock) slide the mount back on. With the mount in place, release the spring and it will come to rest on the mount. Refasten the mount and check for light tension on the sensor. If it pushes forward when you release it, you're good to go. Refasten the back panel, attach all wires and enjoy.
Have a good one!
Jul 28, 2010 |
Samsung SCX 4521F All-In-One Laser Printer