Question about Samsung SCX 4200 All-In-One Laser Printer

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Lsu error on SCX-4725FN samsung printer

Getting this message and now wont print - solution?

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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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Posted on Jan 02, 2017

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My scx-4725fn printer doesn't print. and gives the error message what should i do?


what is the error message that it gives you ? the most common on these printers is the paper feed error the machine will not pick up paper. the feed tire is right below the toner system and the feed tire gets dirty and wont feed paper. if this is the case the feed tire needs to be cleaned. you should take it to a dealer for this cleaning because it is hard to get to the whole tire with out knowing what to do.

Feb 02, 2015 | Samsung SCX-4725FN All-In-One Laser...

2 Answers

LSU error SAMSUNG SCX 4725FN


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.

Jan 27, 2011 | Samsung SCX-4725 Laser Printer

1 Answer

Printer Samsung - SCX-4725FN. In trying to


Hi,

you may try uninstall the driver and reinstall the new driver from samsung website. www.samsung.com

it might help to resolved this issue. make sure that after you install the driver do a test print and set the paper size to a4 as default it is set to letter.

May 01, 2010 | Samsung SCX-4725FN All-In-One Laser...

1 Answer

LSU error in Samsung 4725FN all in one printer how to solve it???


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.

Jan 23, 2010 | Samsung SCX-4725FN All-In-One Laser...

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