Replacing the print cartridges.............................................................................................119
Replacing the imaging drum...............................................................................................121
Replacing the ADF..............................................................................................................123
Replacing the ADF pickup-roller assembly ........................................................................124
Removing the ADF separation pad....................................................................................130
Replacing the ADF scanner glass......................................................................................132
Replacing the fuser assembly.............................................................................................133
Replacing the control-panel bezel......................................................................................134
Replacing the tray 1 pickup roller and separation pad.......................................................135
Covers.................................................................................................................................................142
Removing the left cover......................................................................................................142
Removing the right cover....................................................................................................145
Removing the right rear cover............................................................................................146
Removing the scanning assembly......................................................................................148
Removing the left rear cover...............................................................................................153
Removing the left upper cover............................................................................................153
Removing the right upper cover..........................................................................................155
Replacing the memory-card assembly (HP Color LaserJet 2840 all-in-one only).............157
Removing the input/output (I/O) cover................................................................................158
Removing the back cover...................................................................................................161
Removing the top cover assembly.....................................................................................162
Removing the upper multipurpose cover............................................................................165
Removing the density sensor and top-of-page sensor.......................................................167
Removing the multipurpose roller cover.............................................................................168
Removing the lower multipurpose cover............................................................................169
Main assemblies..................................................................................................................................172
Removing the control panel................................................................................................172
Removing the left support assembly..................................................................................173
Removing the right support assembly................................................................................174
Removing the laser/scanner assembly...............................................................................175
Removing the transfer-roller plate......................................................................................177
Removing the transfer roller...............................................................................................178
Removing the formatter assemblies...................................................................................180
Removing the formatter cage.............................................................................180
Removing the formatter and line interface unit (LIU).........................................182
Removing the E-label reader (for imaging-drum E-labels).................................................185
Removing the DC controller................................................................................................187
Removing the top plate.......................................................................................................189
Removing the gear assembly.............................................................................................192
Removing the waste-toner sensor......................................................................................195
Removing the rotary-drive assembly..................................................................................196
Removing the print-cartridge carousel................................................................................199
Aligning the carousel gears................................................................................................203
Removing the registration-roller assembly.........................................................................204
Removing the toner-catch tray............................................................................................204
Removing the feed-drive shaft and belts............................................................................205
Removing the power supply cover plate.............................................................................214
Removing the paper-top sensor.........................................................................................218
Removing the fuser-wrap sensor........................................................................................219
Motors and fans...................................................................................................................................222
ENWW vii
