Windows Legacy OS forum



by hawboy / February 3, 2012 6:52 AM PST

Printer 5 yrs old, first problem ever, cannot clear this error code? Guide simply states you wipe and clean glass, and surrounding area! no help?

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All Answers

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It's not looking good, sadly.
by MarkFlax Forum moderator / February 3, 2012 8:59 PM PST

LSU stands for Laser beam Scanning Unit and from what I see in my searches there could be dust on the polygon mirror surfaces, or the motor that spins the polygon may be failing or has failed.

The links below show just a couple of other discussions about this;

If you have already cleaned the mirrors but that doesn't help, it looks like the printer is on its way out.



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LSU error code Samsung SCX-4725
by kingkoin / January 28, 2013 1:21 PM PST

The LSU error may happen if you replace the toner cartridge with a compatible one.
If you load back the original cartridge the error will be cleared. This is because of the chip board on the cartridge.
I would recommend to re-fill your cartridge rather than buying a compatible.

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sumsang laser printer scx-4521f LSU IS ERROR
by arifpathan786 / April 2, 2013 2:57 PM PDT


please give me suggestion how can i soluation my LSU ERROR please give fast answer
iam from india gujarat

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(NT) Tried Changing the Toner Cartridge?
by Grif Thomas Forum moderator / April 3, 2013 3:17 AM PDT
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windows 7 pro
by bigwillie070 / October 12, 2014 1:22 AM PDT

I have this error on mine and I am trying to send a document from my desktop to the printer (SCX-4521F) that is needed for my business and this code keeps popping up. Please help!

System Info:
Samsung SCX-5421F
Windows 7 Pro

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Given this is now 7 years old.
by R. Proffitt Forum moderator / October 12, 2014 1:31 AM PDT
In reply to: windows 7 pro

I'd have a tech give it the once over and then replace the aging, failing printer.

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Internal error
by Balaeaswar / November 17, 2015 10:17 PM PST

When I give a printout from my samsung scx3201G printer, it gives error message as "Internal Error - Illegal Resolution". Please guide me


P. Balamurugan

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Tip: don't hide new requests in old posts.
by R. Proffitt Forum moderator / November 18, 2015 9:37 AM PST
In reply to: Internal error
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