Read Sharp AR-C150 (serv.man5) Service Manual online
No.
Parts
Note
Code
Signal
name
Name
Type
Function/Operation
Active condition
9
MPFS
MPFS
Paper pickup
solenoid
solenoid
Presses the paper pickup roller onto the
paper.
paper.
10
Paper stopper
Prevents against double feed.
11
Manual paper
feed roller
feed roller
Feeds paper to the paper transport
section.
section.
12
MPFC
MPFC
Manual paper
feed clutch
feed clutch
Electromagnetic
clutch
clutch
Transmits the paper feed motor drive
power to the manual paper feed unit.
(Controls ON/OFF of the manual paper
feed unit.)
power to the manual paper feed unit.
(Controls ON/OFF of the manual paper
feed unit.)
13
Separation roller
Separates paper to prevents against
double feed.
double feed.
14
Manual
transport roller
transport roller
Transports paper to the resist roller.
15
Idle roller
Applies a pressure to the transport roller
to give the transport roller power to the
paper.
to give the transport roller power to the
paper.
16
OHP sensor
Detects an OHP sheet. (Identifies an
OHP sheet from normal paper.)
OHP sheet from normal paper.)
Analog input
C. Details of operations
(1) Paper feed tray section operation
The pickup roller moves up and down to press the paper surface to
separate the top paper, which is sent to the paper feed roller.
separate the top paper, which is sent to the paper feed roller.
The paper feed roller sends the paper to the transport section. The
separation roller prevents against double feed.
separation roller prevents against double feed.
The pickup roller is moved up and down by the pickup solenoid.
ON/OFF control of the pickup roller and the paper feed roller is made
by the paper feed clutch.
ON/OFF control of the pickup roller and the paper feed roller is made
by the paper feed clutch.
The paper lift plate lifts paper to control the upper limit position so that
the pressure between the top paper and the pickup roller is kept con-
stant.
the pressure between the top paper and the pickup roller is kept con-
stant.
This assures stable paper feed operations. Lifting is made by the lift
motor and the lift gear.
motor and the lift gear.
The paper upper limit detector detects the lift position to control the
pressure between the top paper and the pickup roller.
pressure between the top paper and the pickup roller.
The paper feed tray is provided with the paper size detection block.
The concavo-convex surface of the block is detected by the combina-
tion of ON/OFF of the four paper size detectors to identify the paper
size.
The concavo-convex surface of the block is detected by the combina-
tion of ON/OFF of the four paper size detectors to identify the paper
size.
Peper feed clutch
Paper feed motor
Pick up solenoid
Pick up roller
Peper feed roller
Separation roller
Pick up roller
Upper limit detector
Lift plate
Separation roller
Separation roller
Paper feed roller
Lift motor
Pick up roller
Lift motor
Paper detector
Lift position sensot
AR-C150
2 – 7
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