HP LaserJet 5000 Service Manual - Page 292

Table 7-30. Vertical Dots Possible Cause Action Dirty static eliminator Clean the static eliminator. teeth. Poor contact between Clean the contacts, if dirty. If the problem remains the Static Eliminator after cleaning, or if parts are damaged or deformed, and the Engine replace them. Controller Board. Deformed or Replace the Transfer Roller. deteriorated Transfer Roller. Defective DC Replace the DC Controller Assembly. Controller Assembly. Table 7-31. Vertical White Lines Possible Cause Action Toner Cartridge is Remove the Toner Cartridge and shake it gently. The nearly empty. This can cartridge will soon require replacement. cause uneven toner distribution. Toner Cartridge has Store the Toner Cartridge in a darkened environment been exposed to too for several days. This may restore the photosensitive much light. potential. Foreign objects in beam path. Any foreign objects will block the light from developing an image on the Photosensitive drum. Remove the Toner Cartridge and check for damage. Replace the Toner Cartridge if it is damaged. Remove the Printer Cover and inspect the path from the Laser/Scanner to the Toner Cartridge drum, looking for foreign objects in the beam path. EN Troubleshooting the Printing System 7-71