HP 2840, 2830, 2820 manual 121

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