HP — HP LaserJet M4349x MFP service manual (EN)

Staple home position detection ....................................................................... 175 Self-priming detection ..................................................................................... 176 Staple level detection ...................................................................................... 176 Stapler/stacker switches and sensors ............................................................................. 177 Stapler/stacker motors, solenoid, and fan ....................................................................... 179 Stapler/stacker PCBs .......................................................................................................

180 Stapler/stacker driver PCB .............................................................................................. 183 Stapler/stacker driver list of signals ................................................................................. 184 Scanner system ................................................................................................................................ 187 Electrical system .............................................................................................................. 187 Motors and fans ...............................................................................................................

189 Optical assembly ............................................................................................................. 189 ADF feed system ............................................................................................................. 191 Jam detection .................................................................................................................. 191 Residual-media jam ........................................................................................ 191 ADF pickup jam ...............................................................................................

192 ADF jam .......................................................................................................... 192 Registration sensor jam .................................................................. 192 Read sensor jam ............................................................................ 192 Exit sensor jam ............................................................................... 192 ADF cover open jam ....................................................................................... 192 ADF open jam .................................................................................................

192 Locations of major components ....................................................................................................... 193 Sensors and switches ...................................................................................................... 193 Cassette sensors ............................................................................................ 193 Sensors in the print-cartridge area .................................................................. 194 Sensors on the reversing unit (top side) ......................................................... 194 Sensors in the interior of the MFP ...................................................................

195 Output-bin detection switch, SW103 ............................................................... 196 Tray 1 paper-present sensor, PS105 .............................................................. 196 Top-cover switch, SW101 ............................................................................... 197 Tray 2 jam-access-cover switch, SW105 ........................................................ 197 Motors, fans, solenoids, and clutch ................................................................................. 197 Front-side fans ................................................................................................

198 Rear-side fans ................................................................................................. 199 Rear-side motors (1 of 2) ................................................................................ 199 Rear-side motors (2 of 2) ................................................................................ 200 Rear-side solenoid .......................................................................................... 201 Reversing-unit motors and solenoids .............................................................. 201 Right, rear corner components (1 of 2) ...........................................................

202 Right, rear corner components (2 of 2) ........................................................... 203 Scanner and ADF components ........................................................................................ 203 ADF output-bin-full sensor .............................................................................. 203 ADF pickup assembly sensors ........................................................................ 204 ENWW ix