Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A
DISASSEMBLY & ASSEMBLY Parts Diagram 108
Confidential
Figure 3-6. Paper Feed Mechanism
PF Scale
(p184)
PF Belt
(p185)
Edge Release Assy
(p199)
Functions as follows:
1. Operates the Edge Guide.
2. Switches the eject position.
Suction Fan
(p186)
Sucks paper to the platen so as
to stabilize the position of paper
when printing.
Edge Sensor
(p201)
Detects the open/closed status and
pressure of ASF Edge guide.
PF Encoder
(p183)
Detects the PF Scale pattern to
control the paper feeding
(operation of the PF Motor).
PF Motor
(p182)
The motor to drive the
Feed Roller.
Release Sensor
(p198)
Detects the position
(contact/separate status) of
the Feed Roller.
Release Motor Assy
(p197)
Contacts/Separates the Feed Roller.
2nd PE Sensor
(p192)
Detects paper fed from the
Paper Cassette.
Paper Thickness Sensor1, 2
(p195)
Detects the thickness of paper
being inserted into the printer.
PW Sensor
(p193)
Detects the width of paper on the platen.
This is a reflective photo interrupter and
detects the difference of the amount of
reflection between paper (white) and the
platen (black).
PE Sensor
(p188)
Detects paper fed from the Paper Cassette
or the Roll Unit.
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