Manual sensor tests ................................................................................ 108
Cartridge door switch (SW3) .................................................... 110
Left door switch (SW1) ............................................................. 111
Right door sensor (SR8) ............................................................ 112
Cartridge install sensor (SR1) .................................................... 113
Top (top-of-page) sensor (SR9) .................................................. 114
Fuser loop sensor (SR6) ............................................................ 115
Fuser output sensor (SR12) ....................................................... 116
Duplex switchback sensor (SR1) ................................................ 117
Duplexer refeed sensor (SR2) .................................................... 118
Tray 4 feed sensor (SR1) .......................................................... 119
Output sensor (SR3) ................................................................. 120
Tray/bin manual sensor tests ................................................................... 121
Main product trays .................................................................. 123
Optional 500-sheet paper tray (Tray 4) ...................................... 131
1x500 and 3x500 paper deck trays ......................................... 136
HCI trays ................................................................................ 138
Print/stop test ........................................................................................ 144
Component tests ..................................................................................... 145
Control-panel tests ................................................................... 145
Half self-test ............................................................................ 145
Drum rotation test check ........................................................... 146
Component test (special-mode test) ............................................ 146
Diagrams ............................................................................................................. 148
Block diagrams ...................................................................................... 148
Location of connectors ............................................................................ 153
DC controller connections ......................................................... 153
Plug/jack locations ................................................................................. 155
Locations of major components ................................................................ 156
General timing charts ............................................................................. 171
Circuit diagrams .................................................................................... 172
Internal test pages ................................................................................................. 174
Clean the paper path ............................................................................. 174
Set up an auto cleaning page ................................................... 174
Print a configuration page ....................................................................... 175
Configuration page ................................................................. 175
HP embedded Jetdirect page .................................................... 176
Finding important information on the configuration pages ............ 177
Control panel menus .............................................................................................. 178
Administration menu ............................................................................... 178
Reports menu .......................................................................... 178
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