HP LaserJet M4345 - Multifunction Printer Service Manual

Duplex-unit-pickup delay jam .......................................................... 158
Duplex-unit stationary jam ............................................................... 159
Duplex-unit delay jam ...................................................................... 159
3-bin mailbox system ......................................................................................................................... 160
Stacker mode .................................................................................................................... 162
Mailbox mode .................................................................................................................... 162
Function-separator mode .................................................................................................. 162
Jam detection .................................................................................................................... 162
Feed-delay jam ................................................................................................ 163
Feed-stationary jam ......................................................................................... 163
Residual-media jam ......................................................................................... 163
Power-on sequence .......................................................................................................... 163
MBM driver ........................................................................................................................ 164
MBM switches and sensors .............................................................................................. 167
MBM PCBs ....................................................................................................................... 168
MBM list of signals ............................................................................................................ 169
Stapler/stacker system ...................................................................................................................... 171
Power-on sequence .......................................................................................................... 171
Staple mode ...................................................................................................................... 172
Jogger operation ............................................................................................................... 178
Jogger home-position detection ....................................................................................... 182
Stacker mode .................................................................................................................... 184
Jam detection .................................................................................................................... 184
Stapler unit ........................................................................................................................ 185
Staple home position detection ........................................................................ 186
Self-priming detection ...................................................................................... 186
Staple level detection ....................................................................................... 186
Stapler/stacker switches and sensors .............................................................................. 187
Stapler/stacker motors, solenoid, and fan ........................................................................ 189
Stapler/stacker PCBs ........................................................................................................ 190
Stapler/stacker driver PCB ............................................................................................... 193
Stapler/stacker driver list of signals .................................................................................. 195
Scanner system ................................................................................................................................. 198
Electrical system ............................................................................................................... 198
Motors and fans ................................................................................................................ 200
Optical assembly ............................................................................................................... 200
ADF feed system .............................................................................................................. 202
Jam detection .................................................................................................................... 202
Residual-media jam ......................................................................................... 202
ADF pickup jam ................................................................................................ 203
ADF jam ........................................................................................................... 203
Registration sensor jam ................................................................... 203
Read sensor jam ............................................................................. 203
Exit sensor jam ................................................................................ 203
ADF cover open jam ........................................................................................ 203
ADF open jam .................................................................................................. 203
Locations of major components ........................................................................................................ 204
Sensors and switches ....................................................................................................... 204
Cassette sensors ............................................................................................. 204
Sensors in the print-cartridge area ................................................................... 205
viii ENWW

HP LaserJet M4345 - Multifunction Printer Specifications

General

Print Technology	Laser
Print Speed	Up to 45 ppm
Print Resolution	Up to 1200 x 1200 dpi
Scan Type	Flatbed, ADF
Maximum Copy Resolution	600 x 600 dpi
Fax Capability	Yes
Standard Input Capacity	600 sheets
Standard Output Capacity	250 sheets
Maximum Output Capacity	500 sheets
Connectivity	USB, Ethernet
Functions	Print, copy, scan, fax
Internal Memory	256 MB
Maximum Internal Memory	512 MB
Duplex Printing	Yes
Processor Speed	533 MHz
Operating System Compatibility	Windows, Mac
Monthly Duty Cycle	200, 000 pages