Main Wiring Diagram (Continued) - Xerox Phaser 8400 Service Manual

Main Wiring Diagram (Continued)

J620
Power Control
4
ECB
J820
+/-50 V
+/-12 V unreg
+3.3 V
14
J790
generates
+/- 12 V reg.
+5 V
34
J390 (Left Side)
Printer ambient
temperature
J800 (Right Side)
Serial
Data
Bus
14
2 J840
J870
2
J250
I/O ECB
2
J860
+50 V
8
J680
+3.3 V
6
J600
Wiring Diagrams
J480 30 connector
4
X- axis motor
2
Drum fan
16
4 Y axis pos encoder
J400
ECB
(Right
Side)
7 Process motor
with encoder
2
J280
Y- axis motor
Inkload ECB
10
J1
Heaters (4)
Ink out opto
Ink low opto
Door open opto
J910
Thermistor (4)
3
Main tray paper height opto
10 3
J400
Main tray paper opto
3
Waste tray opto
3
J110 Process home (optional)
10
J220
MPT ECB
5
J610
Width sense var. resistor
Media present sense opto
NOTE:
Thermal fuse for drum is located
on Pre-heated ECB
3
JDC1
Power
J3AC
Supply
7
ECB
J2AC
AC
generates:
+/-50 V
+/-15 V unreg
4
+3.3 V
J4AC
J1AC
5
4
J0720
Pre-heat
ECB
J0670
J2
Deskew entry
sense opto
J0660
J860
5
Control Panel
ECB
generates:
+5 V
LCD Display
J600
10
Printhead
AC Resv. heaters (2)
AC Jetstack heaters (2)
Drum Heater
Series/parallel heater
35
35
3
J3
2
J2
Relay ECB
2
2
Paper preheater
2
Preheat temp therm
3
Preheat sense opto
2
J190
Top door sense switch
2
J110 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
s8500-124
2
J1
10-3