Manage the print cartridge ................................................................................................. 59 Print-cartridge storage ....................................................................................... 59 Use genuine HP print cartridges ....................................................................... 59 HP policy on non-HP print cartridges ................................................................ 59 Print-cartridge authentication ............................................................................ 59 HP fraud hotline and Web site ..........................................................................
59 Replace supplies and parts ................................................................................................................ 61 Supply replacement guidelines .......................................................................................... 61 Redistribute toner .............................................................................................................. 61 Change the print cartridge ................................................................................................. 62 Install memory (HP LaserJet P2050 Series Printers only) .................................................................
64 Install product memory ...................................................................................................... 64 Check DIMM installation .................................................................................................... 67 Save resources (permanent resources) ........................................................................... 67 Enable memory for Windows ............................................................................................. 68 Clean the product ...............................................................................................................................
69 Clean the print-cartridge area ............................................................................................ 69 Clean the paper path (HP LaserJet P2050 Series Printers only) ...................................... 70 Clean the paper path (HP LaserJet P2030 Series Printers only) ...................................... 70 Clean the Tray 1 pickup roller ............................................................................................ 71 Clean the Tray 2 pickup roller ............................................................................................
75 5 Theory of operation Introduction ......................................................................................................................................... 80 Internal components ........................................................................................................................... 81 Timing ................................................................................................................................................. 83 Engine control system ........................................................................................................................
84 DC controller ...................................................................................................................... 85 Low-voltage power supply ................................................................................................. 85 High-voltage power supply ................................................................................................ 86 Laser/scanner system ........................................................................................................................ 88 Laser failure detection .......................................................................................................
89 Image-formation system ..................................................................................................................... 90 Pickup/feed/delivery system ............................................................................................................... 94 Jam detection .................................................................................................................... 95 6 Removal and replacement Removal and replacement strategy ...................................................................................................
98 Electrostatic discharge ....................................................................................................................... 98 Required tools ................................................................................................................................... 99 Before performing service ................................................................................................................ 100 After performing service ...................................................................................................................
100 Introduction ......................................................................................................................................... 98 vi ENWW