Panasonic FA-DS72 / FA-DS82 / FA-MA301 Service Manual ▷ View online
1-2
Paper feed solenoid
LCC sensor
Upper limit sensor
Paper detecting sensor
Elevator motor
Driver PCB
Door open /close sensor
Lower limit sensor
1.3 Exterior
1.4 Component location
Upper cover
Rear cover
Junction
cord
cord
SV006
Door
Paper feed table
Connecting cord
to the copy
machine frame
to the copy
machine frame
Paper feed motor
SV005
1-3
Introduction
Door
Pick up roller
Paper feed roller
Paper detecting sensor
Door open /
close sensor
close sensor
Paper feed
table
table
Lower limit
sensor
sensor
SV001
Upper limit
sensor
sensor
DFP roller
2-1
Mechanical
components
2. Mechanical components
2.1 Operation of LCC elevating drive
The LCC system enables 3,000 sheets of paper to be put on the paper feed table.
Elevating operation of the table is as follows.
•
When the elevator motor of the paper feed table rotates, the drive gear of the
elevator chain is driven by the middle gear and the elevator chain begins to
drive. The paper feed table, which is connected to the elevator chain, begins to
rise or to fall according to the direction the chain is driving.
•
When the door closes, the paper feed table is lifted. When the lower limit sensor
detects the paper feed table, the sensor stops the elevator drive.
•
When the door opens, the paper feed table is driven down. When the lower limit
sensor detects the paper feed table, the sensor stops elevator drive.
•
When the paper is fed, and the sheets of paper on the paper feed table are
removed, the upper limit sensor turns OFF. The elevator motor rotates, and by
the rotation, the paper feed table is elevated.
When the upper limit sensor detects the paper, the elevator motor stops and the
upper limit of paper on the table is compensated.
SV008
Tray elevating mechanism
Lower limit sensor
Elevator chain
Elevator motor
Middle gear
Paper
feed
table
feed
table
2-2
2.2 Operation of the LCC
As for the structure of LCC paper feed unit, please refer to the paper feed section in
the basic version of main body Service Manual of the copy machine.
•
When the copy-start-key is pressed, and the paper feed motor rotates, the paper
feed roller and pick up roller are driven by the drive belt and gear.
•
When the paper feed solenoid turns on, the pick up roller contacts the paper.
The paper on the paper feed table is fed to the main body of the copy machine
by the pick up roller and paper feed roller.
If paper is double fed, the lower sheet is returned by the DFP roller.
•
When there is no paper on the paper feed table, the sensor lever enters a slot on
the table. In this way the paper detecting sensor detects a paper empty condition.
Operation of LCC drive
Paper detecting sensor
Upper limit sensor
Pick-up roller
Paper feed solenoid
Drive belt
Paper feed motor
SV009
DFP roller
Paper feed roller
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