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HP P3015 Service Manual

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    							HP LaserJet P3010 Series Printers
    Service Manual
    Additional product information:
    www.hp.com/support/ljp3010series 
    						
    							HP LaserJet P3010 Series Printers
    Service Manual 
    						
    							Copyright and License
    © 2009 Copyright Hewlett-Packard
    Development Company, L.P.
    Reproduction, adaptation, or translation
    without prior written permission is prohibited,
    except as allowed under the copyright laws.
    The information contained herein is subject
    to change without notice.
    The only warranties for HP products and
    services are set forth in the express warranty
    statements accompanying such products
    and services. Nothing herein should be
    construed as constituting an additional
    warranty. HP shall not be liable for technical
    or editorial errors or omissions contained
    herein.
    Part number: CE524-90909
    Edition 1, 7/2009 Trademark Credits
    Adobe
    ® is a trademark of Adobe Systems
    Incorporated.
    Microsoft®, Windows®, Windows® XP, and
    Windows Vista® are U.S. registered
    trademarks of Microsoft Corporation.
    ENERGY STAR and the ENERGY STAR
    mark are registered U.S. marks. 
    						
    							Conventions used in this guide
    TIP:Tips provide helpful hints or shortcuts.
    NOTE: Notes provide important information to explain a concept or to complete a task.
    CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging the
    product.
    WARNING! Warnings alert you to specific procedures that you should follow to avoid personal injury,
    catastrophic loss of data, or extensive damage to the product.
    ENWW iii 
    						
    							iv   Conventions used in this guideENWW 
    						
    							Table of contents
    1  Theory of operationBasic operation ............................................................................................................... ...................... 2
    Major printer systems ......................................................................................................... . 2
    Printer block diagram ......................................................................................................... .. 2
    Sequence of operation .........................................................................................................  3
    Normal sequence of operation ............................................................................ 3
    Formatter-control system ...................................................................................................... ............... 4
    Sleep mode .................................................................................................................... ...... 4
    Input/output .................................................................................................................. ........ 4
    CPU ..................................................................................................................................... 4
    Memory ................................................................................................................................ 5 Optional hard disk ............................................................................................... 5
    Firmware ............................................................................................................. 5
    Nonvolatile memory ............................................................................................ 5
    PJL overview .................................................................................................................. ..... 5
    PML ..................................................................................................................................... 5
    Control panel ................................................................................................................. ...... 5
    Engine-control system ......................................................................................................... ................. 6
    Motors, fans, clutches, solenoids, switches, and sensors ................................................... 7
    DC controller operations .................................................................................................... 1 4
    Fuser-control circuit ......................................................................................................... .. 16
    Fuser failure detection ....................................................................................... 17
    Fuser temperature control ................................................................................. 18
    Fuser protective function ................................................................................... 19
    Low-voltage power supply ................................................................................................. 20
    Overcurrent/overvoltage protection ................................................................... 21
    High-voltage power supply ................................................................................................  22
    Formatter ..................................................................................................................... ...... 23
    Formatter heartbeat LED ..................................................................................  23
    DIMM slots ........................................................................................................ 23
    Laser/scanner system ........................................................................................................ 2 4
    Laser failure detection ....................................................................................... 25
    Image-formation system ........................................................................................................ ............. 26
    Electrophotographic process ............................................................................................. 26
    ENWW v 
    						
    							Image formation process ................................................................................................... 27Latent-image formation stage ........................................................................... 28Primary charging .............................................................................. 28
    Laser beam exposure ....................................................................... 28
    Developing stage .............................................................................................. 29 Print cartridge ................................................................................... 29
    Transfer stage ................................................................................................... 30 Fusing stage ..................................................................................... 30
    Cleaning stage .................................................................................. 31
    Toner detection .................................................................................................................. 32
    Pickup, feed, and delivery system ............................................................................................. ......... 33
    Paper trays ................................................................................................................... ..... 33
    Photo sensors and switches .............................................................................................. 34
    Solenoids and clutches ...................................................................................................... 3 6
    Tray 1 or Tray 2 .................................................................................................................................. 38 Pickup and feed unit ..........................................................................................................  38
    Cassette paper size detection/cassette paper detection ................................... 38
    Cassette pickup ................................................................................................. 38
    Tray 1 paper pickup ...........................................................................................................  38
    Paper pickup and feed ....................................................................................................... 3 9
    Jam detection ................................................................................................................. ... 40
    Additional tray ............................................................................................................... ...................... 41
    Tray driver PCA ............................................................................................................... .. 41
    Paper pickup and feed ....................................................................................................... 4 2
    Media level and size detection ........................................................................................... 43
    Jam detection ................................................................................................................. ... 43
    2  Removal and replacement Removal and replacement strategy  ............................................................................................. ...... 46
    General cautions during removal and replacement ........................................................... 46 Electrostatic discharge ...................................................................................... 46
    Required tools ................................................................................................... 46
    Types of screws ................................................................................................ 47
    Service approach .............................................................................................................. ................. 48
    Before performing service .................................................................................................. 48
    After performing service .....................................................................................................  48
    Post-service test ............................................................................................................. ... 48
    Print-quality test ................................................................................................ 48
    Parts removal order ...........................................................................................................  50
    Removal and replacement procedures ............................................................................................ .. 52
    Print cartridge, cassettes, and sub cover ........................................................................... 52
    Print cartridge .................................................................................................... 52
    Tray cassette (Tray 2, Tray 3, or Tray 4) .......................................................... 54
    vi ENWW 
    						
    							Sub cover .......................................................................................................... 55
    External panels, covers, doors, formatter PCA, DIMM, and EIO disk ............................... 56 EIO disk ............................................................................................................. 56
    DIMM cover and DIMM ..................................................................................... 57Reinstall the DIMM ........................................................................... 58
    Formatter cover and formatter PCA .................................................................. 60
    Rear-door assembly .......................................................................................... 62
    Left cover .......................................................................................................... 66
    Right-rear cover ................................................................................................ 68
    Tray 1 (multipurpose tray) cover ....................................................................... 69
    Cartridge-door assembly ................................................................................... 71
    Top-right cover .................................................................................................. 73
    Control panel ..................................................................................................... 74
    Front-right and right-side cover assembly ......................................................... 76
    Lower-right cover and bracket ........................................................................... 80 Reinstall the lower-right cover .......................................................... 82
    Top cover .......................................................................................................... 84
    Main assemblies ............................................................................................................... . 86
    Tray 1 (multipurpose tray) pickup roller ............................................................. 86
    Tray 1 (multipurpose tray) separation pad ........................................................ 87
    Tray 2, Tray 3, or Tray 4  pickup roller ............................................................... 88
    Tray 2, Tray 3, or Tr ay 4 separation pad ........................................................... 90
    Tray 2, Tray 3, or Tray 4 base-plate roller assembly ........................................ 91
    Transfer roller .................................................................................................... 92
    USB port PCA ................................................................................................... 94
    Power-switch assembly ..................................................................................... 96
    Main fan, fan duct, and environmental sensor .................................................. 98
    Fuser ...............................................................................................................  100
    Registration assembly ..................................................................................... 102
    Duplex media-feed assembly .......................................................................... 104
    Laser/scanner .................................................................................................  107
    Engine control unit (ECU) ...............................................................................  110
    Cassette pickup (Tray 2) solenoid or Tray 1 (multipurpose tray) pickup
    solenoid ........................................................................................................... 115
    Fuser motor ..................................................................................................... 117
    Sub fan and fan duct .......................................................................................  118
    High-voltage power supply (HVPS) ................................................................. 121
    3  Solve problems Solve problems checklist ...................................................................................................... ............ 128
    Menu map ...................................................................................................................... ..................  130
    Troubleshooting process ....................................................................................................... ...........  131
    Determine the problem source ........................................................................................  131
    Power subsystem ............................................................................................................  13 2
    ENWW vii 
    						
    							Power-on checks ............................................................................................. 132
    Tools for troubleshooting ..................................................................................................... ............. 133
    Individual component diagnostics .................................................................................... 133 LED diagnostics .............................................................................................. 133LED indicators ................................................................................ 133
    Formatter heartbeat LED ................................................................ 133
    HP Jetdirect LEDs .......................................................................... 134
    Engine diagnostics .......................................................................................... 134 Engine-test button .......................................................................... 134
    Fuser test page ............................................................................................... 135
    Paper-path test (and automatic sensors test) ................................................. 136
    Sensor test (interactive) .................................................................................. 137 A TOP (Top-of-Page) sensor .......................................................... 140
    B Fuser output sensor .................................................................... 141
    C Duplex sensor ............................................................................. 142
    D Paper width sensor 1 .................................................................. 143
    E Tray 3 feed sensor ...................................................................... 144
    F Tray 4 feed sensor ...................................................................... 145
    G FD tray full sensor ....................................................................... 146
    H Face up detect sensor ................................................................ 147
    I Cartridge-door open switch .......................................................... 148
    J Rear cover open sensor .............................................................. 149
    K Tray 1 paper sensor .................................................................... 150
    L Tray 2 paper sensor .................................................................... 151
    M Tray 2 detect switch .................................................................... 152
    N Tray 3 paper sensor .................................................................... 153
    O Tray 3 detect switch .................................................................... 154
    P Tray 4 paper sensor .................................................................... 155
    Q Tray 4 detect switch .................................................................... 156
    Print/stop test .................................................................................................. 157
    Component tests ............................................................................................. 158 Half self-test .................................................................................... 158
    Drum rotation test check ................................................................. 158
    Diagnostics menu components test ................................................ 158
    Diagrams ...................................................................................................................... ... 160
    Block diagrams ................................................................................................ 160
    Plug/jack locations .......................................................................................... 162
    Location of connectors .................................................................................... 163 ECU controller connections ............................................................ 163
    Locations of major components ...................................................................... 165
    General timing charts ...................................................................................... 169
    General circuit diagram ................................................................................... 170
    Internal print quality test pages ........................................................................................ 171 Cleaning page ................................................................................................. 172
    viii ENWW 
    						
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