Brother International IntelliFax-3550 Service Manual - Page 60

Scanner Frame ASSY, Pressure roller ASSY.

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1.8 Scanner Frame ASSY (1) You can remove the following parts from the top of the scanner frame ASSY without taking out the ASSY from the main cover: • Cover glass. Turn the cover glass up towards you. • Ejection leaf springs. Remove them while slightly pulling up the front edges. • Document take-in roller ASSY. Unhook the latch of the gear, take it off, and lift up the ASSY. • Separation roller ASSY. First unhook the latch of the adjacent gear and take it off, and then remove the separation roller ASSY in the same way as for the document take-in roller ASSY. • Pressure roller ASSY. While pressing down the leaf springs, remove the ASSY. • Bar lens and LED array. • Document front sensor actuator. • Document rear sensor actuator. While pressing down the leaf spring and pulling the boss "X" provided on the scanner frame ASSY to the front, slightly move the actuator to the left and lift it up. • Document sensor PCB. Disconnect the CCD harness and LED array harness from the document sensor PCB. Take the main-sensor harness out of the three clamps (see the illustration on the next page) and then disconnect it from the PCB. Document take-in roller ASSY Document rear sensor actuator Document front sensor actuator Separation roller ASSY Pressure roller ASSY Cover glass Document sensor PCB Leaf springs Boss "X" PC1 CCD harness P2 P1 PC2 P3 Main-sensor harness connector CCD harness connector PC1: Document front sensor PC2: Document rear sensor IV - 10 (Front) Bar lens and LED array CCD unit (Do not remove) Ejection leaf springs

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IV –
10
1.8
Scanner Frame ASSY
(1)
You can remove the following parts from the top of the scanner frame ASSY without
taking out the ASSY from the main cover:
•
Cover glass.
Turn the cover glass up towards you.
•
Ejection leaf springs.
Remove them while slightly pulling up the front edges.
•
Document take-in roller ASSY.
Unhook the latch of the gear, take it off, and lift up the
ASSY.
•
Separation roller ASSY.
First unhook the latch of the adjacent gear and take it off,
and then remove the separation roller ASSY in the same way as for the document
take-in roller ASSY.
•
Pressure roller ASSY.
While pressing down the leaf springs, remove the ASSY.
•
Bar lens and LED array.
•
Document front sensor actuator.
•
Document rear sensor actuator.
While pressing down the leaf spring and pulling the
boss "X" provided on the scanner frame ASSY to the front, slightly move the actuator
to the left and lift it up.
•
Document sensor PCB.
Disconnect the CCD harness and LED array harness from
the document sensor PCB.
Take the main-sensor harness out of the three clamps
(see the illustration on the next page) and then disconnect it from the PCB.
PC1
PC2
P3
P1
P2
Document
sensor PCB
Document front
sensor actuator
Boss "X"
Ejection leaf
springs
Bar lens and LED array
CCD unit
(Do not remove)
Leaf springs
Document rear
sensor actuator
Document take-in
roller ASSY
Separation roller ASSY
Pressure roller ASSY
Cover glass
CCD harness
(Front)
PC1: Document front sensor
PC2: Document rear sensor
Main-sensor harness connector
CCD harness connector