Question about Dell 1600n All-In-One Laser Printer

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LSU ERROR shows in display panel

Printer is initialising properly, but when i scan / print something, it shows "LSU ERROR" When printing, the page comes out 1/2 way and then stops, and then LSU error is displayed.

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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.

Posted on Jan 14, 2008

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Posted on Oct 01, 2008

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SOURCE: LSU ERROR shows in display panel

Call the ASC, the mainboard is malfuntion and need to be replace.

Posted on Jul 08, 2008

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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. Laser diode could be bad.

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if it's a vertical line in scanned pictures, it's probably a dust bunny on the scanner head, if it's only on printed pages, it's probably a dust bunny on or in the laser assembly or between the laser and the photosensitive drum. if cleaning doesn't get rid of it, you could have a defective scanner head or laser assembly, or a scratch on the photosensitive drum.

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