Lexmark W850 User's Guide - Page 123

Maintaining the printer 123 When 88 Replace Cartridge appears, you must replace the cartridge. Estimated cartridge yield is based on the ISO/IEC 19798 standard (with about 5% coverage per color). Extremely low print coverage (less than 1.25%) for extended periods of time may negatively affect actual yield and may cause cartridge parts to fail prior to exhaustion of toner. Ordering a photoconductor kit When 84 Replace photoconductor or 84 Photoconductor low appears, order a new photoconductor kit. Ordering a maintenance kit When 80 Routine maintenance needed appears, order a maintenance kit. The maintenance kit contains all the items necessary to replace the pick rollers, transfer roller, and fuser. Note: Using certain types of paper may require more frequent replacement of the maintenance kit. The pick rollers, transfer roller, and fuser can also be individually ordered and replaced as necessary. Ordering staple cartridges When Staples Low or Staples Empty appears, order the specified staple cartridge. For more information, see the illustrations inside the stapler door. Part name Staple Cartridges-3 pack Part number 25A0013