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Chapter 2
2-14
2.5 PICKUP AND FEEDING SYSTEM
2.5.1 Overview/Configuration
2.5.1.1 Outline
0008-0146
The pickup/feed system serves to pick up and move print paper, and consists of the main motor, solenoid, and various rollers.
The machine is designed to pick up paper from 2 sources: pickup tray and manual feed tray; delivery, on the other hand, must be to the face-down tray.
The machine uses the same pickup roller to pick up paper, regardless of whether the paper is placed in the pickup tray or the manual feed tray. After pickup,
the paper is moved to the photosensitive drum and the transfer charging roller, the fixing film unit and the pressure roller, and the face-down delivery roller
in sequence to reach the face-down tray for delivery.
The paper path is equipped with 2 photointerrupters: paper leading edge sensor (PS801) and delivery sensor (PS803), enabling the machine to find out
whether print paper has reached or has moved past a specific point of the paper path.
If print paper fails to reach or move past a specific point within a specific period of time, the CPU of the engine controller will identify the condition as
being a jam, and communicate the fact to the video controller.
F-2-17
PS801: paper leading edge sensor
PS802: paper width sensor
PS803: delivery sensor
M1: main motor
SL1: pickup solenoid
2.5.2 Detecting Jams
2.5.2.1 Jam Detection Outline
2.5.2.1.1 Outline
0008-0148
The machine uses the following sensors to check the presence/absence of paper and to find out whether paper is moving normally:
* paper leading edge sensor (PS801)
* paper width sensor (PS802)
* delivery sensor (PS803)
Pick-up roller
Transfer
charging
roller
Face-down delivery roller
Manual feed tray
Universal paper feed tray
Pressure roller
Fixing film unit
SL1
Engine controller PCB
Video controller
M1
PS801
PS802
PS803
Separation
pad
P
APER DELIVER
Y
DETECTION sigunal
(/POSNS)
T
OP
OF P
AGE DETECTION signal (/PISNS)
PICK-UP
SOLENOID DRIVE signal (CPUD)
MAIN MOT
OR DRIVE signals
Photo-sensitive
drum
P
APER WIDTH DETECTION signal (/PWSNS)
Summary of Contents for LBP-3000
Page 1: ...H T T P W W W F I X C L U B C O M C N Mar 10 2005 Service Manual LBP3000 2900 Series LBP2900 ...
Page 2: ...H T T P W W W F I X C L U B C O M C N ...
Page 6: ...H T T P W W W F I X C L U B C O M C N ...
Page 12: ...H T T P W W W F I X C L U B C O M C N Contents ...
Page 13: ...H T T P W W W F I X C L U B C O M C N Chapter 1 PRODUCT DESCRIPTION ...
Page 14: ...H T T P W W W F I X C L U B C O M C N ...
Page 16: ...H T T P W W W F I X C L U B C O M C N ...
Page 23: ...H T T P W W W F I X C L U B C O M C N Chapter 2 TECHNICAL REFERENCE ...
Page 24: ...H T T P W W W F I X C L U B C O M C N ...
Page 44: ...H T T P W W W F I X C L U B C O M C N Chapter 2 2 18 ...
Page 51: ...H T T P W W W F I X C L U B C O M C N Chapter 3 DISASSEMBLY AND ASSEMBLY ...
Page 52: ...H T T P W W W F I X C L U B C O M C N ...
Page 87: ...H T T P W W W F I X C L U B C O M C N Chapter 3 3 33 F 3 161 ...
Page 88: ...H T T P W W W F I X C L U B C O M C N ...
Page 89: ...H T T P W W W F I X C L U B C O M C N Chapter 4 MAINTENANCE AND INSPECTION ...
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Page 98: ...H T T P W W W F I X C L U B C O M C N ...
Page 99: ...H T T P W W W F I X C L U B C O M C N Chapter 5 TROUBLESHOOTING ...
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Page 102: ...H T T P W W W F I X C L U B C O M C N ...
Page 107: ...H T T P W W W F I X C L U B C O M C N Chapter 6 APPENDIX ...
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