HP LaserJet Quick Reference Service Manual: Dc Controller Loads

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Circuit
Breaker
CB101
Power Switch
(SW101)
Exhaust Fans
FM1
FM2
Intake Fan
FM3
Figure 3-5

DC Controller Loads

88 – Power supply
Power Supply Unit
Switching
Noise
Filter
Transistor
Filter
Fuse
(F101)
Front Door
Switch
(SW102)
Fusing Heater
Drive Circuit
Front Door Switch
(SW102)
Fuser Heater
+24V
+5V
/RELE
/FUSE1ON
/FUSE2ON
DC
+24V
Controller
+24V (High Spd.)
+5V (Low Spd.)
+24V (High Spd.)
+5V (Low Spd.)
+5V (Low Spd.)
Trans-
Rectifier
former
24V to 5V
Control
Photo-
IC
coupler
Overcurrent
Protection
+24V
+5V
Laser / Scanner Unit
+12V
+5V
High
Voltage
Power
+24V
Supply
+24V
Main
Motor (M1)
+5V
+5V
Front Door
+24V
Assembly
+24V
+5V
Interface
PCA
+24V
+5V
/RELE
/FUSE1ON
/FUSE2ON
+24V
Primary Charging Roller
Developing Bias
Transfer Charging Roller
Toner Sensor
Sensors, Clutches, Solenoids
Control Panel
Formatter PCA
EN

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