Wiring Diagrams In this chapter... Main Wiring Diagram Right-Side Wiring Diagram Left-Side Wiring Diagram Inside Front Wiring Diagram Inside Top Wiring Diagram Inside Top - printhead Wiring Diagram Section
Main Wiring Diagram Printhead Driver JET0 +/- JET1 +/- JET +/- CLK +/- ADCTX +/- ADCRX +/- +/-1 V regulated +. V Gnd (9) Spares (Vss & Vpp) Vss J Vpp J40 0 0 J60 J180 J670 Wave Amp 6 Mode Switch USB Parallel /0T J00 J600 J400 JR8 J90 J Main Processor Main tray elevator plate motor Main tray pick clutch IDE J860 80 J580 40 connector Hard Drive.5 Hard Drive Purge pump Main Fan J90 6 4 14 4 VssD VppD J0800 Gnd sense wave amp enable +/-50 V +/-1 V unregulated Gnd (6) 14 8, HCF connector MPT solenoid Deskew clutch Media path motor with encoder M. path motor fan 7 Paper height opto Pick sense opto 11 J 8 J400 Main Drum temp thermistor Strip solenoid Paper out sense opto Pick clutch Transport motor + J80 J980 HCF_RD HCF_TD HCF_CLK +50 V +. V Gnd () DMU life (i Button) Strip sense opto Exit/bin full sense opto 8 Media Tray sense Width sense () switch Length sense () switch Elevator plate motor J1 6 J160 generates: 4 V PWM J80 8 Heat maintenance clutch Media Tray sense Width sense () switch Length sense () switch J1 6 s8400-181 - Phaser 8400 Color Printer
Main Wiring Diagram (Continued) 4 14 4 J60 Power Control J80 Printer ambient temperature J480 +/-50 V +/-1 V unreg +. V J790 generates J400 +/- 1 V reg. +5 V J90 J870 J800 J840 J80 J9 16 4 4 7 J1 0 connector X- axis motor Drum fan Y axis pos encoder Process motor with encoder Y- axis motor Inkload Heaters (4) Ink out opto Ink low opto Door open opto Thermistor (4) J JDC1 LINE 1/0 Power Supply AC generates: +/-50 V +/-15 V unreg +. V J1AC 5 Auxilary Connectors JAC 7 JAC 4 J4AC Pre-heat Deskew entry sense opto J860 5 4 J070 J0670 J0660 NOTE: All items connected with RED carry line voltage. J Printhead AC Resv. heaters () AC Jetstack heaters () Drum Heater Series/parallel heater J Relay Paper preheater Preheat temp therm Preheat sense opto J1 8 6 J50 J860 J680 J600 I/O +50 V +. V J400 J1 J0 J6 5 Main tray paper height opto Main tray paper opto Waste tray opto Process home (optional) MPT Width sense var. resistor Media present sense opto Control Panel J190 generates: +5 V LCD Display J600 J1 Top door sense switch Front door sense switch 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 Black = input Magenta = output Red = temp s8400-197 Service Manual -
Right-Side Wiring Diagram J1 Waste Tray J0 No Display J840 DEAD Power J50 7,00.4x Strip Solenoid Ensure the ground clips are in front of the I/O board. 7,016.4x HM Clutch J400 7,006.4x Drum Heater J600 Add Paper Tray J6 No Handfeed J9 1,87.4 7,006.4x Drum Heater 7,006.4x Drum Heater 7,006.4x Drum Heater 5,00.4 7,014.4x Drum Fan J680 1,016.4x J870 1,067.4x J860 Maintenance Kit Missing Ensure wiring harnesses pass thru rectangular holes in exit cover assembly and frame. Error code 11,0.4x 11,04.4x Ensure the ground clip is in place. It grounds end of pivot plate shaft. Add Paper Dead No Display No Handfeed Waste Tray Maint. Kit 1,016.14x 1,067.14x 1,87.4 7,006.4x 7,006.4x 7,006.4x 7,006.4x 7,014.4x 7,016.4x 7,00.4x s8400-179 -4 Phaser 8400 Color Printer
Right-Side Wiring Diagram (Continued) 1,87.4x Routes to bottom of channel J4AC 7,006.4x 7,07.4x X-Motor Signal cable is on the top of the channel. J800 DEAD Power Ribbon cable is in the middle of the channel. Dead 1,87.4x 7,006.4x 7,07.4x J480 7,07.4x 7,07.4x s8400-180 Service Manual -5
Left-Side Wiring Diagram 7,01.4x 7,01.4x 7,0.4x 7,0.4x 7,0.4x 7,06.4x 7,0.4x Purge Motor 7,0.4x Purge Valve J80 7,0.4x Y-Motor 7,01.4x Elec Fan J790 7,06.4x Head VSS J90 7,04.4x MP Motor 7,01.4x MT Elevator Ensure ground strap is clipped to the channel. s8400-177 -6 Phaser 8400 Color Printer
Left-Side Wiring Diagram (Continued) Ensure the wiring is retained by restraint. 7,015.4x MP Fan 7,015.4x 7,017.4x 7,018.4x 7,019.4x 7,04.4x 7,04.4x MP Motor 7,017.4x Deskew Clutch 7,019.4x Pick Solenoid 7,018.4x Pick Clutch Ensure the ground clip is in place. Ground wire measures 0k ohms. s8400-178 Service Manual -7
Inside Front Wiring Diagram 7,008.4x Preheat Pwr. J860 1,11.41 Paper Jam Open Front Cover Load Paper 7,06.4x Process Motor Jam FC Load Paper 1,11.41 7,008.4x 7,06.4x s8400-175 -8 Phaser 8400 Color Printer
Inside Top Wiring Diagram 7,0.4x Ink 1 Heater J180 4,06.4x J1AC 7,009.4x Ink Load Pwr. JAC 7,00.4x JSL Heater Ensure ink loader heater wiring remains in the dotted area when ink loader is installed. 4,06.4x 7,00.4x 7,009.4x 7,0.4x s8400-174 Service Manual -9
Inside Top - printhead Wiring Diagram J180 4,06.4x J140 7,06.4x Head VPP J1 7,06.4x Head VSS Out of Ink Out of Ink 4,06.4x 7,06.4x 7,06.4x Ensure the printhead heater wiring is retained by restraint. s8400-176 - Phaser 8400 Color Printer