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Lsu hsync error in samsung ML-4050 laser printer solution

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 161 Answers

SOURCE: Samsung ML 2010 Laser printer

LSU means "Laser Scanner Unit". That is the part that actually "prints" the image on the drum before it goes to the paper. If the toner (not ink) cartridge is in good condition, then you need an Authorized Service Center to replace the LSU assembly.

Posted on Nov 02, 2007

  • 1362 Answers

SOURCE: Samsung ML 1210 Laser Printer

check here

Posted on Jul 25, 2008

  • 2 Answers

SOURCE: Error message w/Samsung ML 2150 Laser Printer - Engine LSU Error

Your Laser unit at the top section where the paper exit is faulty. You have no choice but to change it.

Posted on Nov 27, 2008

  • 65 Answers

SOURCE: samsung printer ml-2551 internal error

Make a service request here or contact Samsung here

Posted on Mar 27, 2009

  • 76 Answers

SOURCE: I had this samsung printer SCX-4828FN. I try to

check the lsu unit whether it is working properly or not situated just above the toner cartridge

Posted on Feb 01, 2011

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1 Answer

Samsung ml 2551 Engine hsync error

Dear The problem is with LSU (laser scanning unit) unit. If you are experience open the lsu clean all optical path and test. This may operate .Replace the LSU unit.Thanks.

Oct 13, 2014 | Samsung ML-2551N Laser Printer

1 Answer

Lsu hsync error cycle power

give back cover of the printer, which is located Fuser Fuser is carefully removed after it opened by pressing the two side screws to remove out.Se Fuser notice printed contacts are clean and in particular an electric tab located somewhere in that cloud right des.Reinstall Fuser ... success!

Apr 12, 2011 | Samsung ML-3051ND Laser Printer

1 Answer

My printer is showing the error LSU Hsync power error


your Ml 3051ND printer have bad laser scanner unit(LSU UNIT)you have to replace this thing is call for service.

or some time laser scanner unit wire harness was damaged. so best solution is call for service.

Feb 07, 2011 | Samsung ML-3051ND Laser Printer

1 Answer

Erro hsync LSU impressora samsung ml3051nd xaa

replace laser unit. or replace electrolytic capacitors on secondary side of power supply.

Jan 27, 2011 | Samsung ML-3051ND Laser Printer

1 Answer

I just replaced the cartridge in my ML-2850. I have an error LSU Hsync Error . Cycle Power

LSU is your laser assy. Sounds like you have a major problem. Laser usually needs replacing with this fault.

Dec 02, 2010 | Samsung Office Equipment & Supplies

1 Answer


mensaje de error hsync en impresora ML-2550

Sep 19, 2010 | Samsung ML-3051ND Laser Printer

1 Answer

Printer Error

That's a laser unit error, usually not spinning fast enough. If it's not under warranty it could be an expensive repair. Check the laser unit price at

Dec 22, 2009 | Samsung SCX 4521F All-In-One Laser Printer

3 Answers

Have lsu error also.

Hi ...

LSU stands for Laser Scanner Unit ... you normally get 2 different kind of errors with LSU ...
LSU Hsync or LSU Motor Error ...
If you get this error, it means that the Laser Scanner Unit has gone bad and the only way to get it fixed is to get the printer repaired ...

Cheers ....

Jul 28, 2009 | Samsung SCX-4100 All-In-One Laser Printer

2 Answers

Printer has ''internal error''

Hi there,
  • Unplug the printer cable from the computer.
  • Unistall the printer drivers from Device manager and also unistall the all the printer appications
  • restart the computer
  • try to download drivers from the website
  • after installing drivers and software it will ask you to connect the printer.
  • then you can connect the printer and and try to Print the test page.
Hope this help. Please Rate My Response! Thanks! 

Mar 12, 2009 | Samsung ML 2151N Laser Printer

1 Answer

Blank papers comes when the print given

D ear team, Blank papers comes when the print given. Meanwhile it shown the error msg is: LSU Hsync error cycle power pls give me the solution NHPC Ltd.

Feb 03, 2008 | Samsung ML-3051ND Laser Printer

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