Lexmark Optra C710 Service Manual - Page 158

5016-001 Uneven Print Density Service Check FRU 1 Print Cartridge 2 Intermediate Transfer Unit (ITM) 3 Transfer Roll Action Remove the problem print cartridge and shake it gently to distribute the toner evenly. The cartridge may also be low on toner and may need replacing. Try a new ITM unit. Check the transfer roll for signs of contamination, such as adhesives or toner buildup. Check for surface damage to the roll, replacing the roll if necessary. White Lines or Bands Service Check FRU 1 Print Cartridges 2 Intermediate Transfer Unit (ITM) 3 Transfer Roll Action Gently shake the toner cartridges to evenly distribute the toner. If lines or bands remain, one of the cartridges may have a scratch on the photoconductor. Run the "Print Quality Test Pages" on page 3-1, to isolate the failing cartridge. If a particular cartridge is found to produce the line or band at the same spot as on the printed page, replace the failing cartridge. Remove the ITM from the printer and carefully examine the belt for marks or scratches at the same spot as on the printed page. Examine the transfer roll for signs of damage or contamination which might cause a line or band to occur at the same location as on the printed copy. 2-92 Service Manual