Read Sharp AL-840 (serv.man5) Service Manual online
No.
Parts
Note
Code
Signal name
Name
Type
Function/operation
Active condition
11
Paper pressure
spring
spring
Presses paper onto the paper
feed roller.
feed roller.
12
Paper separator
Separates paper in paper feed
operation.
operation.
13
Paper feed clutch
Mechanical
spring type
clutch
spring type
clutch
Controls ON/OFF of the paper
feed roller. (The paper feed roller
is driven by the paper feed clutch
solenoid and the main motor.
feed roller. (The paper feed roller
is driven by the paper feed clutch
solenoid and the main motor.
14
Paper feed clutch
lever
lever
Driven by the paper feed clutch
solenoid to control ON/OFF of
the paper feed clutch. Prevents
against reverse rotation of the
paper feed roller.
solenoid to control ON/OFF of
the paper feed clutch. Prevents
against reverse rotation of the
paper feed roller.
15
Paper feed clutch
joint
joint
Links the paper feed roller and
the paper feed roller clutch.
the paper feed roller clutch.
16
Paper feed clutch
sleeve
sleeve
Controls ON/OFF of the paper
feed roller. (The paper feed roller
is driven by the paper feed clutch
solenoid and the main motor.)
feed roller. (The paper feed roller
is driven by the paper feed clutch
solenoid and the main motor.)
17
Paper feed clutch
spring
spring
Transmits the paper feed clutch
rotation to the paper feed clutch
sleeve.
rotation to the paper feed clutch
sleeve.
18
Paper feed clutch
gear
gear
Transmits the main motor power
to the paper reed roller.
to the paper reed roller.
19
Paper separater
spring
spring
Applies a proper pressure to the
paper separater.
paper separater.
c. Optical section
<1> Scanner (reading) section
10)
11)
4) MHPS
8) SL SENSOR
9)
7)
6) CCD SENSOR
5)
4) MHPS
10)
8) SL SENSOR
7)
6) CCD SENSOR
11)
9)
5)
3)
2)
3)
2)
1)
4) MHPS
5 – 5
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