Xerox 8500DN Service Manual - Page 345

Main Wiring Diagram (Continued) NOTE: All items connected with RED carry line voltage. Printhead AC Resv. heaters (2) AC Jetstack heaters (2) LINE 110/220 Auxilary Connectors Black Red White J620 J480 Power Control 4 J820 ECB +/-50 V +/-12 V unreg 14 J790 +3.3 V generates J400 +/- 12 V reg. (Right +5 V Side) 34 J390 (Left Side) Printer ambient temperature J280 J800 (Right Side) Serial Data Bus 14 2 J870 J840 J910 2 J250 I/O ECB 2 J860 J400 8 J680 +50 V +3.3 V J110 J220 6 J600 J610 30 connector 4 X- axis motor 2 Drum fan 16 4 Y axis pos encoder ECB 7 Process motor with encoder JDC1 Power Supply ECB AC generates: +/-50 V +/-15 V unreg +3.3 V J1AC 5 3 J3AC 7 J2AC 4 J4AC 42 Drum Heater Series/parallel heater 35 35 3 J3 2 J2 Relay ECB 2 J1 2 Y- axis motor 10 J1 Inkload ECB J2 Heaters (4) Ink out opto Ink low opto Door open opto Thermistor (4) J0720 2 Pre-heat ECB 2 J0670 Deskew entry sense opto J0660 3 J860 5 Paper preheater Preheat temp therm Preheat sense opto 3 Main tray paper height opto 10 3 Main tray paper opto 3 Waste tray opto Control Panel ECB J190 2 generates: +5 V J110 2 LCD Display Top door sense switch Front door sense switch 3 Process home (optional) J600 10 10 5 MPT ECB Width sense var. resistor Media present sense opto NOTE: The numbers shown at the circuit board perimeters are for the actual connectors. Some have extra n.c. pins added to prevent misplugging errors. I/O color coding NOTE: Thermal fuse for drum is located on Pre-heated ECB Black = input Magenta = output Red = temp s8500-124 Phaser 8400/8500/8550/8560 Color Printer Service Manual 10-3