Epson STYLUS PRO 4910 - Page 109

Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A
DISASSEMBLY & ASSEMBLY Parts Diagram 110
Confidential
Figure 3-8. ROLL Unit
Roll Unit Sensor (p216)
Detects the installation status of the
Roll Unit.
Paper Guide Sensor (p221)
Detects the rising/lowering status of the
Paper Eject Support.
ATC Motor Assy (p219)
Winds/rewinds roll paper and generates back tension.
* ATC: Auto Tension Control
Roll Feeding Motor Assy (p220)
Functions as follows:
1. Feeds roll paper forward.
2. Switches the pressing/separation status
of the PF Rollers.
Roll Lock Sensor (p217)
Detects the lock/unlock status of the
ATC planetary gear.
Roll Feeding Sensor (p222)
Detects the pressing/separation status
of the Roll Feeding Roller.
Roll Sensor
Functions as follows:
1. Detects the top/bottom ends of roll paper.
2. Detects the presence of roll paper.