hp Color 9850mfp PROCESS UNIT 4.13 Replacing the drum cartridge A. Periodically replaced parts/cycle • Drum cartridge: Every 100,000 copies B. Procedure Note: • The drum cartridges are provided for the four colors of yellow, magenta, cyan and black, and they are all common. However, be sure to avoid reusing a drum cartridge that was once used for a different color since it has been stuck with the toner of that color. 1. Remove the transfer belt unit. (See " 4.5 Remov- ing and reinstalling the transfer belt unit. ") 2. After raising once both ends [2] of the drum stay [2] U [1], hold them and remove the drum cartridge Y [3]. [8] III DIS./ASSEMBLY 3.
Remove the drum cartridge M [4], drum car- [3] [7] tridge C [5] and the drum cartridge K [6] in the 4. Reinstall the above parts following the removal same manner as in Step 2. [4] steps in reverse. [1] [5] Note: • When reinstalling each drum cartridge, be sure to check if both ends of the cartridge [6] have been dropped into the grooves of the [9] drum installation blocks F [7] and R [8] are drum installation blocks F [7] and R [8]. (The for yellow drum cartridges. Repeat the steps for other cartridges in the same manner.) • When reinstalling the drum cartridge K [6], be careful that the mylar [9] is not caught up.
• Be careful not touch and damage the photo- sensitive material of the drum with bare • When the drum cartridge is not used for a hands. long period of time, be sure to store it in the dark place with a cover on it (to shield the light). 3-45