Chapter 2
2-51
2.5.4 Paper path system
0020-5570
iPF810 / iPF820
F-2-45
Media sensor
The photoreflector-type media sensor detects the presence or absence of paper on the platen.
The sensor detects the presence of paper on the platen if it receives sensor light reflected upon the paper.
Roll media detection sensor/lower roll media detection sensor
The photoreflector-type roll media detection sensor and the lower roll media detection sensor detect the presence or absence of paper at the roll loading port. The
sensors detect the presence of paper if they receive sensor light reflected upon the paper.
Roll media pick-up roller paper detection sensor/lower roll media pick-up roller paper detection sensor
The photoreflector-type roll media pick-up roller paper detection sensor and the lower roll media pick-up roller paper detection sensor detect the presence or absence
of paper on the pick-up roller. The sensors detect the presence of paper if they receive sensor light reflected upon the paper.
Roll media width detection sensor/lower media width detection sensor
The photoreflector-type roll media width detection sensor and the lower roll media width detection sensor detect the presence of a wide roll. The sensors detect the
presence of a wide roll fed if they receive sensor light reflected upon the paper.
Roll media pick-up cam sensor/lower roll media pick-up cam sensor
The photointerrupter-type roll media pick-up cam sensor and the lower roll media pick-up cam sensor detect the pressurization of the pick-up roller when the pick-
up cam rotates to shield the sensor light.
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.
Pinch roller pressure detection sensor
Media sensor
Feed roller HP sensor
Feed roller
encoder sensor
Cutter left
position sensor
Cutter HP sensor
(Lower roll media pick-up cam sensor)
Roll media pick-up cam sensor
Roll media pick-up roller paper
detection sensor
(Lower roll media pick-up roller
paper detection sensor)
Roll media detection sensor
(Lower roll media detection sensor)
Roll media width detection sensor
(Lower roll media width detection sensor)
Pinch roller pressure
detection sensor
Pinch roller release
detection sensor
Summary of Contents for iPF800 Series
Page 1: ...Aug 13 2008 Service Manual iPF800 series ...
Page 2: ......
Page 6: ......
Page 11: ...Chapter 1 PRODUCT DESCRIPTION ...
Page 12: ......
Page 14: ......
Page 38: ...Chapter 1 1 24 Hold this lever to pull out the lower roll unit ...
Page 100: ...Chapter 1 1 86 ...
Page 101: ...Chapter 2 TECHNICAL REFERENCE ...
Page 102: ......
Page 158: ......
Page 159: ...Chapter 3 INSTALLATION ...
Page 160: ......
Page 162: ......
Page 176: ...Chapter 3 3 14 ...
Page 177: ...Chapter 4 DISASSEMBLY REASSEMBLY ...
Page 178: ......
Page 180: ......
Page 238: ...Chapter 4 4 58 ...
Page 239: ...Chapter 5 MAINTENANCE ...
Page 240: ......
Page 242: ......
Page 246: ...Chapter 5 5 4 5 Close upper cover 1 F 5 6 1 ...
Page 247: ...Chapter 5 5 5 ...
Page 248: ......
Page 249: ...Chapter 6 TROUBLESHOOTING ...
Page 250: ......
Page 252: ......
Page 274: ......
Page 275: ...Chapter 7 SERVICE MODE ...
Page 276: ......
Page 278: ......
Page 301: ......
Page 302: ......
Page 303: ...Chapter 8 ERROR CODE ...
Page 304: ......
Page 306: ......
Page 318: ...Chapter 8 8 12 ...
Page 319: ...Aug 13 2008 ...
Page 320: ......