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惠普HP Laserjet M725DN/M725F/M725Z/M725Z拆机和备件手册英文版

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惠普HP Laserjet M725DN/M725F/M725Z/M725Z拆机和备件手册英文版

1 Removal and replacement ................................................................................................ 1
Removal and replacement strategy ............................................................................................. 2
Introduction .............................................................................................................. 2
Required tools ........................................................................................................... 3
Types of screws ........................................................................................................ 3
Service approach ...................................................................................................... 3
Before performing service .......................................................................................... 4
After performing service ............................................................................................. 4
Parts removal order ................................................................................................... 4
Pickup rollers ........................................................................................................................... 5
Tray 1 (multipurpose tray) pickup roller ........................................................................ 5
Reinstall the Tray 1 (multipurpose tray) pickup roller ....................................... 6
Tray 2 and Tray 3 pickup rollers ................................................................................. 7
Tray 4, Tray 5, and Tray 6 pickup and feed rollers ....................................................... 9
High capacity input feeder (HCI) pickup, feed, and separation rollers ............................ 11
Document feeder pickup and feed roller assembly ....................................................... 13
Separation pads and rollers .................................................................................................... 15
Tray 1 separation pad assembly ............................................................................... 15
Tray 2 and Tray 3 separation rollers .......................................................................... 16
Tray 4, 5, and 6 separation rollers ............................................................................ 17
Document feeder separation pad .............................................................................. 18
Reinstall the document feeder separation pad .............................................. 19
Covers and doors .................................................................................................................. 21
Front cover ............................................................................................................. 21
Right rear cover ...................................................................................................... 22
Left door ................................................................................................................ 23
Rear cover ............................................................................................................. 24
Front left lower cover ............................................................................................... 25
Front right lower cover ............................................................................................. 26
Face-down cover ..................................................................................................... 27
Tray 1 (multipurpose tray) cover ................................................................................ 28
Right door .............................................................................................................. 29
Reinstall the right door .............................................................................. 30
Left handle cover ..................................................................................................... 31
Left inner lower cover .............................................................................................. 32
Left inner rear cover ................................................................................................. 33
Left inner front cover ................................................................................................ 35
Right handle cover .................................................................................................. 37
Face-down side cover .............................................................................................. 38
Front upper cover .................................................................................................... 39
Top rear outer cover ................................................................................................ 40
Output upper cover ................................................................................................. 41
Top rear inner cover ................................................................................................ 42
Left inner front upper cover ....................................................................................... 43
Left inner rear upper cover ....................................................................................... 44
Main assemblies .................................................................................................................... 45
Duplexer or duplex cover ......................................................................................... 46
Fuser ..................................................................................................................... 48
Control panel assembly ........................................................................................... 49
Paper delivery assembly .......................................................................................... 50
Install a replacement paper delivery assembly ............................................. 52
Registration assembly .............................................................................................. 54
Transfer roller ......................................................................................................... 57
Paper feed assembly ............................................................................................... 58
Laser scanner ......................................................................................................... 62
Toner cartridge door ............................................................................................... 64
Formatter cage assembly .......................................................................................... 69
Upper cassette pickup assembly ................................................................................ 70
Lower cassette pickup assembly ................................................................................ 73
Lifter drive assembly ................................................................................................ 75
Main drive assembly ............................................................................................... 77
Fuser drive assembly ............................................................................................... 81
Reinstall the fuser drive assembly ................................................................ 82
Switches ............................................................................................................................... 84
Power switch assembly ............................................................................................ 85
Left door interlock switch .......................................................................................... 86
Cartridge door interlock switch ................................................................................. 89
Cartridge door open detection switch ........................................................................ 91
Upper cassette media end switch .............................................................................. 93
Lower cassette media end switch ............................................................................... 94
Sensors ................................................................................................................................. 96
Environment sensor .................................................................................................. 98
Cartridge presence sensor ........................................................................................ 99
Right door sensor .................................................................................................. 100
Motors, fans, and clutches ..................................................................................................... 103
Fuser motor .......................................................................................................... 105
Rear fan ............................................................................................................... 106
Front fan .............................................................................................................. 108
Fuser fan .............................................................................................................. 109
Upper cassette pickup clutch ................................................................................... 110
Lower cassette pickup clutch ................................................................................... 112
Printed circuit-board assemblies (PCAs) ................................................................................... 114
Formatter PCA ...................................................................................................... 114
High-voltage power supply ..................................................................................... 115
DC controller PCA ................................................................................................. 118
Low-voltage power supply assembly ........................................................................ 119
Dual in-line memory module ................................................................................... 122
Reinstall the Dual in-line memory module ................................................... 123
Fax PCA .............................................................................................................. 125
Miscellaneous parts .............................................................................................................. 126
Hard disk ............................................................................................................. 126
Trays .................................................................................................................................. 128
1x500-sheet paper feeder assembly ........................................................................ 128
1x500 rear cover ................................................................................... 128
1x500 left cover .................................................................................... 129
1x500 right-front cover ........................................................................... 131
1x500 front-upper cover ......................................................................... 132
1x500 right door ................................................................................... 133
1x500 right-lower cover .......................................................................... 135
1x500 pickup assembly .......................................................................... 136
1x500 lifter-drive assembly ..................................................................... 139
1x500 pickup motor ............................................................................... 140
1x500 driver PCA .................................................................................. 141
1x500 or 3x500-sheet paper feeder (optional accessory) .......................................... 142
Paper deck rear cover ............................................................................ 142
Paper deck left cover .............................................................................. 143
Paper deck front-lower cover ................................................................... 144
Paper deck right and left cassette rails ...................................................... 145
Paper deck right-corner cover .................................................................. 146
Paper deck front-upper cover ................................................................... 147
Paper deck right-door assembly ............................................................... 148
Paper deck right-lower cover 1 ................................................................ 150
Paper deck right-lower cover 2 ................................................................ 151
Paper deck left-lower cover ...................................................................... 152
ENWW vii
Paper deck rear-lower cover .................................................................... 153
Paper deck controller PCAs ..................................................................... 154
Paper deck lifter-drive assembly ............................................................... 155
Paper deck pickup motor ........................................................................ 156
Paper deck pickup assembly .................................................................... 157
Input devices ....................................................................................................................... 159
High capacity input (HCI) feeder ............................................................................. 159
HCI right tray ......................................................................................... 159
HCI left tray ........................................................................................... 160
HCI left cover ........................................................................................ 161
HCI left lower cover ................................................................................ 162
HCI rear cover ....................................................................................... 163
HCI right door ....................................................................................... 164
HCI right front cover ............................................................................... 165
HCI right center cover and right rear cover ................................................ 166
HCI right lower cover ............................................................................. 168
HCI rear lower cover .............................................................................. 169
HCI left tray lifter drive ............................................................................ 170
HCI right tray lifter drive ......................................................................... 171
HCI left tray pickup drive ........................................................................ 172
HCI right tray pickup drive ...................................................................... 173
HCI controller PCA ................................................................................. 174
HCI left tray automatic close assembly ...................................................... 175
HCI right tray automatic close assembly .................................................... 176
HCI left tray pickup assembly ................................................................... 178
HCI right tray pickup assembly ................................................................ 180
HCI merge assembly .............................................................................. 182
Output devices .................................................................................................................... 184
Stapler/stacker (stapler models only) ....................................................................... 184
Stapler/stacker left door ......................................................................... 184
Stapler/stacker left cover ........................................................................ 186
Stapler/stacker rear cover ....................................................................... 190
Stapler/stacker stapler door .................................................................... 191
Stapler/stacker jogger upper cover .......................................................... 192
Stapler/stacker stapler cover ................................................................... 193
Stapler/stacker left rear cover .................................................................. 195
Stapler/stacker right rear cover ............................................................... 196
Stapler/stacker output bin assembly ......................................................... 197
Stapler/stacker rear inner cover ............................................................... 198
Stapler/stacker stack cover ..................................................................... 199
Stapler/stacker stapler assembly .............................................................. 200
viii ENWW
Stapler/stacker paper feed assembly ........................................................ 201
Stapler/stacker alignment assembly .......................................................... 203
Stapler/stacker controller PCA ................................................................. 210
Stapler/stacker assembly ........................................................................ 211
Document feeder .................................................................................................................. 214
Document feeder assembly ..................................................................................... 214
Install a replacement document feeder assembly ........................................ 216
Document feeder cable cover ................................................................................. 217
Document feeder hinge .......................................................................................... 218
Document feeder mylar strips .................................................................................. 219
Install replacement document feeder mylar strips ........................................ 220
Document feeder foam reflector .............................................................................. 221
Install a replacement document feeder foam reflector .................................. 222
Document feeder tray extender ............................................................................... 227
Document feeder front cover ................................................................................... 229
Document feeder hatch cover ................................................................................. 233
Document feeder paper present sensor .................................................................... 234
Document feeder input tray bottom cover ................................................................. 235
Document feeder width-adjust sensor, paper-long and paper-short sensors ................... 236
Document feeder roller cover .................................................................................. 239
Document feeder rear cover ................................................................................... 241
Document feeder open sensor and flag .................................................................... 243
Reinstall the document feeder open sensor and flag .................................... 245
Scanner .............................................................................................................................. 246
Scanner controller board (SCB) assembly ................................................................. 246
Scanner assembly ................................................................................................. 248
Install a replacement scanner assembly ..................................................... 250
Scanner right cover ............................................................................................... 251
Scanner left cover ................................................................................................. 252
Scanner front cover ............................................................................................... 253
Reinstall the scanner front cover ............................................................... 254
Image scanner memory board ................................................................................ 255
Installing a replacement SCB and image scanner memory board ................. 257
2 Parts and diagrams ...................................................................................................... 259
Order parts by authorized service providers ............................................................................ 260
Related documentation and software ....................................................................... 260
Supplies part numbers ........................................................................................... 260
Customer self repair orderable parts ........................................................................ 261
Accessories part numbers ....................................................................................... 263
How to use the parts lists and diagrams .................................................................................. 265
ENWW ix
Fasteners used in this product ................................................................................................ 265
Assembly locations ............................................................................................................... 266
Base product (no optional trays or accessories) ......................................................... 266
Optional 500-sheet paper feeder (accessory) ........................................................... 267
Optional 1x500-sheet paper deck (accessory) .......................................................... 268
Optional 3x500-sheet paper deck (accessory) .......................................................... 269
High capacity input (HCI) paper deck ...................................................................... 270
Duplexer .............................................................................................................. 271
Optional stapler/stacker ........................................................................................ 272
Document feeder, control panel, and scanner whole units ......................................................... 274
Document feeder assemblies .................................................................................................. 276
Scanner assemblies .............................................................................................................. 278
Scanner controller board (SCB) .............................................................................................. 280
Print engine ......................................................................................................................... 282
External covers and panels ..................................................................................... 282
Internal components (1 of 4) ................................................................................... 284
Internal components (2 of 4) ................................................................................... 286
Internal components (3 of 4) ................................................................................... 288
Internal components (4 of 4) ................................................................................... 290
500-sheet paper feeder (Tray 4) ............................................................................................ 292
500-sheet paper feeder (Tray 4) covers .................................................................... 292
500-sheet paper feeder (Tray 4) components ............................................................ 294
1x500 and 3x500 paper deck .............................................................................................. 296
1x500 and 3x500 paper deck covers ..................................................................... 296
1x500 paper deck components .............................................................................. 298
3x500 paper deck components .............................................................................. 300
High capacity input (HCI) feeder ............................................................................................ 302
HCI covers ........................................................................................................... 302
HCI components (1 of 2) ........................................................................................ 304
HCI components (2 of 2) ........................................................................................ 306
Stapler/stacker assembly ...................................................................................................... 308
Stapler/stacker covers ........................................................................................... 308
Stapler/stacker components ................................................................................... 310
Alphabetical parts list ........................................................................................................... 312
Numerical parts list .............................................................................................................. 324
Index ............................................................................................................................... 337
x ENWW

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