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LSU Error showing - Computers & Internet

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LSU is your Laser Sending Unit.

Try turning your computer off and then back on. A good cleaning sometimes solves the problem, but as I don't know the specific model I can't give you specifics on how to do that.

If it continues you may want to find out how much it would be to repair it. that may be cost prohibitive. Ink jet printers have become very inexpensive, so replacement may be your best option.

Posted on Aug 01, 2010

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I have a samusung scx4521f showing error code {LSU ERROR]


Check both ends of the Flat cable between the scanner unit and logic PCB. Trim edge of the damaged ends by about 1 mm (if damaged). Clean the mirrors of the LSU. Turn on and try. Service manual can be Down loaded from the internet if required.

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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 have to contact Samsung for 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.

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LSU Error keeps showing


LSU stands for Laser Scanner Unit. Depending on the model this should come up only if the services used required scanning such as copy, fax sending, scanning.
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1 Answer

The printer shows LSU error, When i Turn it of after 2 or more hour I can print max 3 copies and then the same error appier (LSU error).


Hello my friend this is Laser Scanner Unit error and this is probably cause if the polygon motor in the LSU does not rotate.The LSU’s laser beam is
functioning properly.You can try unplugging the machine for 3 minutes and plugging back in before you do anything else.If this does not fix it you will need to have it serviced.

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Xerox PE220 workcenter shows LSU Error message.


XEROX WORKCENTER PE220 , ITS SHOWING LSU ERROR . ITS NOT PRINTING OR COPYING ANYTHING . PLEASE GIVE SOLUTION

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1 Answer

Lsu error


clean the inside dust by vaccum cleaner if not solve contact samsung technician to replace LSU

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3 Answers

LSU ERROR shows in display panel


The LSU is the Laser Scanning Unit or "printhead". There is a mirror in there that spins really fast, if the mirror spins too slowly (bad motor, low voltage) it gives an error. Sounds like you would need a replacement LSU. Have the printer serviced.

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12 Answers

LSU ERROR shows in display panel


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. Laser diode could be bad.

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