Xerox 7750DXF - Phaser Color Laser Printer - Page 365

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Laser Scan Drive Control
6.9 LASEER SCAN DRIVE CONTROLLER
MCU PWB PL13.1
DC COM DC COM DC COM
+24VDC
J402
DC 330 [006-031]
ROS MOTOR
ON (L) +6VDC
DC 330 [006-031]
ROS MOTOR
REF CLOCK
YEL YEL
YEL
TD
1
TD
1
1 2
ORN
VIO
+24VDC
DC COM
ROS ASSY PL3.1
1
ROS MOTOR
MOT
FG
J518
DC330 [006-160]
ROS MOTOR
READY (L) +3.3VDC
DC COM
VIO
MCU PWB PL13.1
+3.3VDC
J402
ROS MOTOR
READY SIGNAL
POLYGON MIRROR
DRIVE
6.12C
6.5A
4 2 6 5
J518
2
4 6
3 5 1 2
3 1
Controls rotation speed in comparison with ROS Motor Ref Clock.
Virtual Line
Test Point on MCU PWB J402-2(+) GND(_) A frequency of approx. 2.5KHz
7750-274