HP LASERJET ENTERPRISE M725dn Troubleshooting Manual page 29

Figure 1-74 Jogger guide in the alignment position ............................................................................... 103
Figure 1-75 Leading end alienation roller activates ............................................................................... 103
Figure 1-76 Alignment complete ......................................................................................................... 104
Figure 1-77 Jogger guide in the turnout position ................................................................................... 105
Figure 1-78 Paper stack goes to the output bin ..................................................................................... 105
Figure 1-79 Paper stack goes to the output bin in stacker mode .............................................................. 106
Figure 1-80 Stapler/stacker jam sensors .............................................................................................. 107
Figure 1-81 Stapler components ......................................................................................................... 109
Figure 2-1 Touchscreen blank, white, or dim (no image) ........................................................................ 127
Figure 2-2 Touchscreen is slow to respond or requires multiple presses to respond .................................... 128
Figure 2-3 Touchscreen has an unresponsive zone ................................................................................ 129
Figure 2-4 No control-panel sound ...................................................................................................... 130
Figure 2-5 Home button is unresponsive .............................................................................................. 131
Figure 2-6 Hardware integration pocket (HIP) is not functioning (control panel functional) .......................... 132
Figure 2-7 Locating the engine-test-page switch ..................................................................................... 136
Figure 2-8 Test the cartridge door switch ............................................................................................. 142
Figure 2-9 Test the left door switch ...................................................................................................... 143
Figure 2-10 Test the top sensor ........................................................................................................... 146
Figure 2-11 Fuser loop sensor ............................................................................................................ 147
Figure 2-12 Fuser output sensor .......................................................................................................... 148
Figure 2-13 Duplex switchback sensor ................................................................................................. 149
Figure 2-14 Duplexer refeed sensor .................................................................................................... 150
Figure 2-15 Tray 4 feed sensor ........................................................................................................... 151
Figure 2-16 Output sensor ................................................................................................................. 152
Figure 2-17 Tray 1 paper sensor ........................................................................................................ 155
Figure 2-18 Tray 2 paper sensor ........................................................................................................ 156
Figure 2-19 Tray 2 paper surface sensor ............................................................................................. 157
Figure 2-20 Tray 2 paper size switches ............................................................................................... 158
Figure 2-21 Tray 3 paper sensor ........................................................................................................ 159
Figure 2-22 Tray 3 paper surface sensor ............................................................................................. 160
Figure 2-23 Tray 3 paper size switches ............................................................................................... 161
Figure 2-24 Output bin full sensor ....................................................................................................... 162
Figure 2-25 Tray 4 paper sensor ........................................................................................................ 163
Figure 2-26 Tray 4 paper surface sensor ............................................................................................. 164
Figure 2-27 Tray 4 paper size switches ............................................................................................... 165
Figure 2-28 Tray 4 feed sensor ........................................................................................................... 166
Figure 2-29 Lower right door sensor .................................................................................................... 167
Figure 2-30 Test the Tray 4 door switch ............................................................................................... 169
Figure 2-31 Tray 4 paper sensor ........................................................................................................ 172
Figure 2-32 Tray 4 paper surface sensor ............................................................................................. 173
Figure 2-33 Tray 4 paper size sensor .................................................................................................. 174
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