Lexmark E320 Service Manual - Page 116

4500 Print quality service checks Note: Ensure cover is closed tightly. A gap in the opening may allow light to expose the photoconductor resulting in a 'dirty' print. Blank page FRU Toner cartridge Printhead Printhead cable HVPS board LVPS board Engine board (E320/E322) Controller card (E220/E321/E323) Action Remove the toner cartridge and gently shake it to evenly distribute the toner. Check for cartridge damage. Blank pages can be caused by a defective printhead assembly, HVPS, LVPS, engine board (E320/E322) or controller card (E220/E321/E323). • Printhead errors typically result in printer service errors. • Blank pages typically are caused by the PC roll not being properly charged. Unplug the printer and check continuity between the HVPS solder pads marked DC (below fan) and the corresponding pin inside the printer. • If there is not continuity, remove the HVPS and clean/replace springs. Try a different cartridge. If it fails, replace the HVPS. 2-86 Service Manual