Sharp MX-3500N Service Manual page 354

Signal name
CPFM Paper feed motor
MPED Manual feed paper empty detection
MPFD Manual feed paper entry detection
MPDS Paper pickup solenoid
MPGS Manual paper feed gate solenoid
MPLD Manual feed paper length detector
MPUC Manual paper feed clutch
MPWD Manual paper feed tray paper width detector
MTOP1 Manual paper feed tray pull-out position detector 1
MTOP2 Manual paper feed tray pull-out position detector 2
PFM Transport motor
TH_M/HUD_M Temperature/humidity detection
No.
1 Paper feed roller (Manual paper feed tray)
2 Separation roller (Manual paper feed tray)
3 Paper pickup roller (Manual paper feed tray)
4 Torque limiter
5 Transport roller 12 (Drive)
2. Operational descriptions
The paper pickup roller moves up and down to press paper and
separates the top paper, which is fed to the paper feed roller.
The paper feed roller feeds paper to the paper transport section,
and the separation roller prevents double feed.. ON/OFF control of
the pickup roller and the paper feed roller is made by the manual
paper feed clutch. Paper is transported to the resist roller by the
manual paper transport roller.
Name
Name
MX3500N MANUAL PAPER FEED SECTION D – 2
Paper feed section drive
Manual paper feed tray paper empty detection
Manual paper feed tray paper empty detection
Paper pickup solenoid (Manual paper feed)
Controls the manual paper feed gate solenoid Open/Close.
Manual paper feed tray paper length detection
Controls the manual paper feed section paper feed roller ON/OFF.
Manual paper feed tray paper width detection
Manual paper feed tray paper pull-out position detection (storage position)
Manual paper feed tray paper pull-out position detection (pulling-out position)
Transport drive between the resist roller and the paper feed section. Transport drive
between the resist roller and the right door section.
Detects temperature/humidity.
Feeds paper to the paper transport section.
Separates paper to prevent Double Feed.
Feeds paper to the paper feed roller.
A certain level of resistance force is supplied to the rotation of the separation roller to
prevent double feed.
Transports paper transported from the transport roller 11 to the transport roller 8.
Transports paper fed from the manual feed tray to the transport roller 8.
3. Disassembly and assembly
A. Manual paper feed section
(2)
(2)-e
(2)-b
(2)-h
(2)-d
(1)-d
(1)
Unit
(1) Manual
paper feed
tray unit
(2) Manual
paper feed
unit
Function/Operation
Function/Operation
Parts
a Temperature/humidity sensors
b Manual paper feed tray pull-out
position detector 1
c Manual paper feed tray pull-out
position detector 2
d Manual paper feed tray paper
width detector
e Manual feed paper length
detector
a Paper pickup roller
b Paper feed roller
c Separation roller
d Manual paper feed gate
solenoid
e Transport roller 12 (Drive)
f Manual feed paper entry
detection
g Torque limiter
h Manual feed paper empty
detection
i Paper pickup solenoid
(2)-i
(2)-g
(2)-a
(2)-c
(2)-f
(1)-a
(1)-b
(1)-c
(1)-e
Maintenance