Sharp MX-4100N Service Manual page 459

Signal name
CLUD1 Tray 1 upper limit detection (Lift HP detection)
CLUD2 Tray 2 upper limit detection (Lift HP detection)
CLUM1 Paper feed tray lift-up motor (Paper feed tray 1)
CLUM2 Paper feed tray lift-up motor (Paper feed tray 2)
CPED 1 Tray 1 paper empty detection
CPED 2 Tray 2 paper empty detection
CPFC Tray vertical transport clutch
CPFD1 Tray 1 transport detection
(Paper entry detection)
CPFD2 Tray 2 transport detection
(Paper entry detection)
CPFM Paper feed motor
CPUC1 Paper feed clutch (Paper feed tray 1)
CPUC2 Paper feed clutch (Paper feed tray 2)
CSPD1 Tray 1 paper remaining quantity detection
CSPD2 Tray 2 paper remaining quantity detection
CSS1 Tray 1 installation detection
CSS2 Tray 2 installation detection
CSS11 Tray 1 rear edge detection 1
CSS12 Tray 1 rear edge detection 2
CSS13 Tray 1 rear edge detection 3
CSS14 Tray 1 rear edge detection 4
CSS21 Tray 2 rear edge detection 1
CSS22 Tray 2 rear edge detection 2
CSS23 Tray 2 rear edge detection 3
CSS24 Tray 2 rear edge detection 4
DSW_C Tray 1, 2 transport cover open/close detection
HPFM Horizontal transport motor
No.
1 Paper feed roller (No. 1 paper feed tray)
2 Paper pickup roller (No. 1 paper feed tray)
3 Separation roller (No. 1 paper feed tray)
4 Torque limiter
5 Paper feed roller (No. 2 paper feed tray)
6 Paper pickup roller (No. 2 paper feed tray)
7 Separation roller (No. 2 paper feed tray)
8 Transport roller 4 (Drive)
9 Transport roller 5 (drive)
10 Transport roller 7 (drive)
11 Rotating plate
12 Transport roller 14 (drive)
2. Operational descriptions
A. Bypass
The pickup roller moves up and down to press the paper surface,
separating the paper on the top of the paper bundle and sending it
to the paper feed roller section.
The paper feed roller feeds paper to the transport section to pre-
vent against double feed with the separation roller. The manual
paper feed clutch controls ON/OFF of the pickup roller and the
paper feed roller. Paper is sent to the resist roller by the manual
transport roller.
B. Tray paper feed
(1) Paper feed front operation
• Set paper and insert the paper feed tray, and the pickup roller
falls to turn ON the paper feed tray sensor.
• The lift-up motor drives the rotating plate to move it up.
• The paper upper limit sensor turns ON, and the rotation plate
stops at the specified position.
Name
Tray 1 upper limit detection
Tray 2 upper limit detection
Drives the lift plate of the paper feed tray.
Drives the lift plate of the paper feed tray.
Tray 1 paper empty detection
Tray 2 paper empty detection
Controls ON/OFF of the paper transport roller in the paper feed tray section.
Detects tray 1 paper pass.
Detects tray 2 paper pass.
Drives the paper feed section.
Controls ON/OFF of the roller in the paper feed tray section.
Controls ON/OFF of the roller in the paper feed tray section.
Tray 1 paper remaining quantity detection
Tray 2 paper remaining quantity detection
Tray 1 installation defection
Tray 2 installation defection
Insertion of the tray is detected by detecting either of tray 1 rear edge detection
1 – 4.
The paper size of tray 1 is detected.
Insertion of the tray is detected by detecting either of tray 2 rear edge detection
1 – 4.
The paper size of tray 2 is detected.
Tray 1, 2 transport cover open/close detection
Transports paper from the paper feed section to the transport motor drive system.
Transports paper from the right door section to the transport motor drive system.
Name
Feeds paper to the paper transport section.
Sends paper to the paper transport section.
Separates paper to prevent Double Feed.
Always provides a certain level of resistance to the rotation of the separation roller,
preventing against double feed.
Feeds paper to the paper transport section.
Sends paper to the paper transport section.
Separates paper to prevent Double Feed.
Transports paper from the transport roller 1 and the paper feed roller (No. 2 paper
feed tray) to the transport roller 7.
Transports paper from the paper feed tray 1 to the transport roller 7.
Transport paper from the paper feed tray 1, 2 and 3, 4 to the transport roller 8.
Lifts up the paper, and always keeps constant the paper feed position.
Transports paper from the paper feed tray 2 to the transport roller 4.
MX-5001N PAPER FEED SECTION F – 4
Function/Operation
Function/Operation
(2) Paper feed operation
• When copy/print operation is started, the motor and the clutch
are turned ON to rotate the pickup roller in the paper pickup tim-
ing, feeding paper.
• At the same time, the paper feed roller rotates to transport paper
to the transport section. At that time, the separation roller rotates
to prevent against double feed of paper.
(3) Paper remaining detection
• The notifying levels of paper remaining quantity are 4 steps in
total; 3 steps of paper remaining quantity and 1 step of paper
empty. The result is displayed.
(4) Paper remaining quantity detection method
• The paper remaining quantity is judged from the number of rota-
tions of the remaining quantity sensor from starting the lift-up
operation of the paper feed tray to turning ON the upper limit
sensor.