Question about Samsung SCX-4725 Laser Printer
Laser Scanner Unit or LSU is what writes to the surface of the drum. The glass above the cartridge in the machine may be dirty. The mirror motor in the LSU could be bad or needs to be cleaned to spin better. The Laser diode may be faulty.
This is not a user-serviceable issue. You will need to contact Samsung for a service. You can do it online via Samsung website or contact the vendor to see who will they appoint to service the printer to, especially if it is still under warranty.
Posted on Feb 15, 2011
If you have installed a new cartridge, put the old one back in and see if the fault comes up.
Some ' compatible ' cartridges aren't.
Posted on Jan 13, 2017
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Posted on Jan 02, 2017
The LSU error stands for Laser Scanner Unit error. The probable cause/s:
The Polygon motor in the LSU does not rotate.
The LSU’s laser beam is functioning properly.
What you can do:
Try to unplug the machine for a couple of minutes or maybe a little longer and then plug everything back in. Power on and then test.
Posted on Feb 09, 2010
You can go to Samsung.com and get an operators manual, but all you do is connect via USB to your computer and have scanning software running. When you press scan a window should pop up with choices of how to scan and where to save the scanned image.
Posted on Nov 20, 2009
The Laser Scanner Unit or LSU is what writes to the surface of the drum.
The glass above the cartridge inside the machine could be dirty. The
mirror motor in the LSU could be bad or needing cleaned so it spins
better. The Laser diode could be bad.
Call the ASC, the mainboard is malfuntion and need to be replace.
I hope this helps! :)
Posted on May 03, 2010
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