D dark copies or scans, troubleshooting 195 data communication operations 76, 79 date menu 36 DC bias 92 DC Controller PCA.
See ECU DC power distribution 88 delay jams 96 delivery-delay jams 96 delivery roller, observing 206 delivery sensor, paper (PS401) feeding operations 94 jam detection operations 96 delivery-stationary jams 96 demonstration report, printing 209 density operations 89 troubleshooting 189 developer’s menu 230 developing roller 89 developing stage, image formation process 92 dimensions, product 19, 30 DIMM recovery firmware 207 DIMMs part numbers 243 slots 18 document feeder, ADF capacity 18 documentation ordering 242 doors print cartridge 17, 133 DOS, PJL commands 234 dots per inch, maximum 18 dots, troubleshooting printed pages 189, 193 scanned images 195 dpi, maximum 18 draft mode 78 DRAM, formatter 76 drive roller, observing 206 drivers, ordering 242 dropouts, troubleshooting 189, 192 drum inspecting 187 operations 91, 92, 93 rotation functional check 202 troubleshooting 189 drum cleaning stage, image formation process 93 duty cycle 18 dynamic random access memory (DRAM), formatter 76 ECP (Extended Capabilities Port) interface 76 ECU cables 166 electrical components 259 functions 85 jam detection operations 96 laser/scanner operations 87 loads 86 paper feeding operations 94 power system 88 removing 164 ECU (Engine Control Unit) troubleshooting 175 edges, not printing 188, 194 electrical components, diagrams and part numbers 258 electrical specifications 20 electrophotographic processes operations 91, 92 testing 201 electrostatic discharge (ESD), precautions for 109 element, heating check 203 operations 93 Engine Control Unit (ECU) troubleshooting 175 engine control unit.
See ECU engine test performing 200 Enhanced I/O 79 envelopes loading 50 specifications for 47 environmental specifications 19, 30 error messages 38, 178 ESD (electrostatic discharge), precautions for 109 European Union regulatory information 28 exit rollers, fuser assembly 94 exit sensor, paper. See delivery sensor, paper (PS401) Extended Capabilities Port (ECP) interface 76 extended warranty 24 F facedown delivery assembly, removing 148 faceup roller, removing 149 fan assembly removing 153 fasteners, types of 244 E EconoMode 78 EN Index 279