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