Dell 2355DN Service Manual - Page 91
Irregular Density, > Replace LSU
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Irregular Density Alignment and Troubleshooting OK after taking out and NO rocking the toner cartridge? YES When gray pattern printing, NO irregular density persists? YES transfer/ charge/developing NO Defective agitator in the toner supplying part voltage drops while of the toner cartridge printing? ->Replace the toner cartridge Check if the 'guide deve YES spring' works OK and repair/repalce Check high voltage output and repair/ replace terminals, HVPS It is over the guaranty life of toner cartridge (Check the counter and replace it) Bad images NO around the no image area? YES Irregularity of toner supply from the toner cartridge -> Replace the toner cartridge Light distortion due to the mirror ruined or LSU's diffused reflection -> Replace LSU 4-51 Service Manual