Stacker-feed stationary jam
...............................................................................
141
Stacker residual-media jam
...............................................................................
141
Stapler/stacker
...................................................................................................................
142
Stapler/stacker feed and delivery
.......................................................................
142
Staple-mode feed and delivery
..........................................................................
144
Stapler unit
.........................................................................................................
148
Stapler-unit operation
........................................................................................
149
Staple level-detection
.........................................................................................
151
Stack-mode feed and delivery
...........................................................................
151
Stapler/stacker jam detection
............................................................................................
152
Stapler/stacker feed jam
...................................................................................
152
Stapler/stacker feed stationary jam
....................................................................
152
Stapler/stacker delivery jam
...............................................................................
152
Stapler/stacker residual media jam
....................................................................
152
Image-formation system
.....................................................................................................................
153
Electrostatic latent-image formation
...................................................................................
155
Primary charging
...............................................................................................
155
Writing the image
..............................................................................................
155
Developing the image
.......................................................................................
156
Transferring the image
......................................................................................
157
Fusing the image
...............................................................................................
158
Cleaning the transfer charging roller and photosensitive drum
.........................
159
Print-cartridge memory chip
...............................................................................
160
Formatter system
.................................................................................................................................
161
PowerSave (LJ 4200/4200L/4300) or Sleep (LJ 4250/4350) Mode
...................................
161
Resolution Enhancement technology
...............................................................................
162
EconoMode
........................................................................................................................
162
Input/output
.........................................................................................................................
162
Parallel interface
................................................................................................
162
USB (HP LaserJet 4250/4350 Series printers only)
..........................................
162
Embedded ethernet print server (HP LaserJet 4250/4350 Series printers
only)
....................................................................................................................
162
Expanded I/O
.....................................................................................................
163
Flash (HP LaserJet 4200/4300 Series printers only)
.........................................
163
CompactFlash card (HP LaserJet 4250/4350 Series printers only)
..................
163
Hard-disk accessory
...........................................................................................
163
CPU
...................................................................................................................
163
Printer memory
..................................................................................................................
163
Read-only memory
............................................................................................
163
Random-access memory
..................................................................................
163
DIMM slots
.......................................................................................................
164
Firmware DIMM (LJ 4200/4200L/4300 only)
.....................................................
164
Nonvolatile memory
...........................................................................................
164
Memory Enhancement technology
...................................................................
164
PJL overview
.....................................................................................................................
164
PML
.....................................................................................................................................
165
Control panel
......................................................................................................................
165
6
Removing and replacing parts
Chapter contents
.................................................................................................................................
167
vii