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Chapter 2
2-53
2.5.4 Paper path system
0023-2560
F-2-44
Feed roller HP sensor
The feed roller HP sensor detects a reference white (transmitted) to black (shielded) transition from the encoder at power on and sets a home position for correcting
the eccentricity of the feed roller.
Feed roller encoder sensor
The feed roller encoder sensor detects the rate of paper transport per revolution of the feed roller from slits in the encoder during driving.
Release lever lock sensor
A photointerrupter type sensor. This sensor detects the release lever lock status when the release lever solenoid turns ON and the sensor flag shields the sensor light.
Roll encoder sensor
A photointerrupter type sensor. This sensor detects the rotation of the roll holder by reading the encoder film at the roll media drive unit.
Feed Roller HP Sensor
Feed Roller Encoder Sensor
Release Lever Lock Sensor
Roll Encoder Sensor
Summary of Contents for iPF671
Page 1: ...Dec 17 2014 Service Manual iPF680 670 650 series iPF671 ...
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Page 11: ...Chapter 1 PRODUCT DESCRIPTION ...
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Page 65: ...Chapter 2 TECHNICAL REFERENCE ...
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Page 125: ...Chapter 3 INSTALLATION ...
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Page 133: ...Chapter 4 DISASSEMBLY REASSEMBLY ...
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Page 192: ...Chapter 4 4 56 2 Shaft Cleaner 1 F 4 118 1 1 ...
Page 193: ...Chapter 4 4 57 3 Upper Cover Hinge Catch 1 Roll Cover Slide Guide 2 F 4 119 2 1 ...
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Page 197: ...Chapter 5 MAINTENANCE ...
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Page 206: ...Chapter 5 5 6 ...
Page 207: ...Chapter 6 TROUBLESHOOTING ...
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Page 253: ...Chapter 7 SERVICE MODE ...
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