Question about Samsung SCX 4200 All-In-One Laser Printer
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.
Posted on Feb 09, 2010
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Posted on Jan 02, 2017
SOURCE: i m using samsung ScX4521f
Laser beam Scanning unit window (thru which the beam travels from the laser unit to the drum in the cartridge) be cleaned. If error persists the LSU assy needs replacement if the wiring harness is not damaged.
Posted on Feb 19, 2011
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