Paper Feed Operation; Paper Size Detection - Sharp MX-2314N Service Manual

Signal name
CPFM Paper feed motor
HUD_M/TH_M Temperature/humidity sensor
MPED Paper empty sensor (Manual paper feed tray)
MPFS Paper feed solenoid (Manual paper feed)
MPLD Paper length detector (Manual paper feed tray)
MPWS Paper width detector (Manual paper feed tray)
PFM Transport motor
No.
1 Paper feed roller (Manual paper feed tray)
2 Separation roller (Manual paper feed tray)
3 Transport roller 9 (Idle)
4 Transport roller 9 (Drive)
5 Transport roller 10 (Drive)
6 Transport roller 10 (Idle)
B. Operational descriptions

(1) Paper feed operation

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 prevent 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 registration roller by the manual transport roller.

(2) Paper size detection

The paper size is detected by the combination of the following detectors on the manual paper feed tray.
Paper size detection table
Series
AB series
INCH series
Name
Name
Paper size
A3W
A3
11" x 17"
B4
8.5" x 14"
8.5" x 13"
A4
8.5" x 11"
B5
A4R
B5R
A5R
Postcard
12" x 18"
A3
11" x 17"
B4
8.5" x 14"
8.5" x 13"
A4
8.5" x 11"
B5
8.5" x 11"R
7.25" x 10.5"R
5.5" x 8.5"R
MX-3114N OPERATIONAL DESCRIPTIONS 13 – 7
Function/Operation
Drives the paper feed section.
Detects the temperature and the humidity. (For the process control)
Detects presence of paper. (Manual paper feed tray)
Controls the paper feed roller. (Manual paper feed)
Detects the paper length. (Manual paper feed tray)
Detects the paper width. (Manual paper feed tray)
Drives the transport rollers 5 and 9.
Function/Operation
Feeds paper to the paper transport section.
Separates paper to prevent double-feeding.
Apply a pressure to paper and the transport roller to provide the transport power of the
transport roller to paper.
Transports paper transported from transport roller 10 to transport roller 5
Transports paper from manual paper feed section to the transport roller 9.
Apply a pressure to paper and the transport roller to provide the transport power of the
transport roller to paper.
Paper length detector (MPLD)
ON
ON
ON
ON
ON
ON
–
–
–
–
–
–
–
ON
ON
ON
ON
ON
ON
–
–
–
–
–
–
Paper width detector (MPWS)
Detection width (mm)
301 - 310.4
291 - 301
273.4 - 285.4
251 - 263
209.9 - 221.9
209.9 - 221.9
291 - 305
273.4 - 285.4
251 - 263
204 - 216
176 - 188
142.5 - 154
96 - 106
301 - 310.4
291 - 301
273.4 - 285.4
251 - 263
209.9 - 221.9
209.9 - 221.9
291 - 305
273.4 - 285.4
251 - 263
209.9 - 221.9
178.1 - 190.1
133.7 - 145.7