Samsung ML2250 distort the image when printing...?

Good day, got to repair a Samsung ML2250 printer, all the print defects were solved, except one, wave =) 59d763a3c8518378576448.jpeg Polygon mirror disassemble, clean... the Printer was dismantled, cleaned... After Assembly, the first print came out as expected smooth, the second, this one third is the same... only iskrevlenie in other places... Sin on polygon. Maybe someone had similar problems, what can Kritsa the problem?
June 14th 19 at 19:20
2 answers
June 14th 19 at 19:24
with 90% probability the problem is in the laser unit, would be nice of course to have a donor for an accurate diagnosis of the site, but judging by the history of the problem lies in the engine torque range - because after cleaning the landfill any reasonable person would change the grease.
ps the problem of the printing drum do not pay attention :)
Here's the scoop startcopy -
"In addition, it is desirable well to clean the small mirror (in the center left of the picture on the left) and lenses (just below centre right of the image on the left) – this path takes the laser beam to the photo sensor serving to control the rotation speed of a polygon (many-sided) mirror. This image sensor is determined and the beginning of the next scan line on the drum. If the path of the laser will be too much dirt, the rotation speed of the polygon mirror starts to gallop, vertical lines in the image are distorted."
Very similar to the description of my problem... And most likely the sensor I missed and not cleaned up =( - Madelyn.Pfannerstill88 commented on June 14th 19 at 19:27
June 14th 19 at 19:22
After repeated disassembly and a more thorough cleaning and LSU this mirror on the side (which, I guess I missed last time) the problem went away.
Printer Volgograd, Thanks for the concern =)

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