HP Color 9850mfp Service Manual - Page 185

hp Color 9850mfp 3. Remove a charging cleaning block [3] from the charging suction assembly [2] provided on the outside of the toner supply unit [1]. Note: • There are two charging cleaning blocks pro- vided on the toner supply kit. Be sure to use either of these two blocks when cleaning the charging corona. PROCESS UNIT [3] [1] 4. Holding the charging corona unit [2] so that the charging grid plate [1] comes up, set the charging cleaning block [3] to the notch and [1] insert it from under the bottom on the rear side, and turn it about 45° clockwise. [2] Note: • If the charging wire is cleaned with the charg- ing grid plate facing down, there is a risk that dust that has stuck to the charging wire sticks to the charging grid plate. So, when cleaning the charging wire, be sure to hold the charging corona unit so that the charging grid plate comes upward. 5. Clean the charging wire [4] by sliding back and forth the charging cleaning block [3] 65AA -251 0KC. 6. Reinstall the above parts following the removal steps in reverse. [2] [3] III DIS./ASSEMBLY 3-31