HP LaserJet 1010 series

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