Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A
DISASSEMBLY & ASSEMBLY Parts Diagram 109
Confidential
Figure 3-7. ASF Unit
Pickup Roller
(p204)
ASF Motor Assy
(p202)
Rotates the Feed Roller to
feed paper in the cassette.
ASF Sub Motor Assy
(p203)
Functions as follows:
1. Switches the pressing/separation status
of the Retard Roller/Assist Roller.
2. Switches the pressing/separation status
of the Pick Unit.
Retard Roller Sensor
(p206)
Detects the pressing/separation
status of the Retard Roller.
Assist Roller Sensor
(p206)
Detects the pressing/separation
status of the Assist Roller.
Pickup Unit Sensor
(p206)
Detects the rising/lowering status of the
Pickup Unit.
Paper Empty Sensor
(p211)
Detects the paper presence in the cassette.
Paper Cassette Sensor
(p214)
Detects the insertion status of the
cassette.
Retard Roller
(p209)
Separates paper fed from the cassette.