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
Introduction ......................................................................................................................................... 98
Removal and replacement strategy ................................................................................................... 98
Electrostatic discharge ....................................................................................................................... 98
Required tools ................................................................................................................................... 99
Before performing service ................................................................................................................ 100
After performing service ................................................................................................................... 100
vi ENWW
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