HP LaserJet 1010 Service Manual - Page 6

Replacing the main input tray (paper pickup tray assembly 33 Replacing the output tray extension (delivery tray assembly 34 4 Operational overview Basic functions...36 Formatter system...37 Central processing unit ...37 RAM...37 Universal Serial Bus interface 37 Parallel interface (HP LaserJet 1015 only 37 Control panel...37 Draft mode ...38 MEt...38 Enhanced I/O ...38 PJL overview ...38 Printer functions...39 Engine control system (engine control unit and power assembly 39 Image formation system 43 Printer paper feed system 44 Jam detection ...46 Solenoid, sensors, and switches 46 Basic sequence of operation (formatter-to-printer 47 5 Removal and replacement Removal and replacement strategy 52 Required tools ...52 Before performing service 52 Print cartridge ...52 Differences between the series models 53 Part removal order ...53 User-replaceable parts ...55 Replacing the printer pickup roller 55 Replacing the printer separation pad 57 Replacing the main input tray (paper pick-up tray assembly 59 Replacing the output tray extension (delivery tray assembly 60 Covers...61 Right side cover...62 Left side cover...65 Print cartridge access door, fuser cover, and rear panel 65 Front cover...68 Internal assemblies...70 Transfer roller assembly 70 Engine power assembly 72 Fuser (fixing) assembly...73 Paper pickup assembly...75 Engine control unit assembly 76 Laser scanner assembly 78 6 Troubleshooting Basic troubleshooting...82 Control panel power-on functions 84 Power-on Functions: Time Ranges 84 Control Panel Pages...86 Control Panel Pages: Time Ranges 86 iv ENWW