Read Sharp AL-840 (serv.man5) Service Manual online
e. Fusing, paper exit section
No.
Parts
MODEL
Note
Code
Signal name
Name
Type
Function/operation
Active condition
1
Heat roller
Heats toner on the paper
and fuses onto the paper.
and fuses onto the paper.
LOW (0V) when
paper is
detected.
paper is
detected.
2
POUT
POUT IN
Paper exit detector
Photo transmission
sensor
sensor
Detects paper exit.
3
RTH IN
Fusing temperature
sensor
sensor
Thermistor
Detects the heat roller
surface temperature.
surface temperature.
4
Temperature fuse 1
(Fusing section)
(Fusing section)
Mold
Assures safety in
overheating.
overheating.
5
Temperature fuse 2
(Fusing section)
(Fusing section)
Mold
Assures safety in
overheating.
overheating.
6
HL
Heater lamp
Halogen lamp
Heats the heat roller.
100V series 10V 500W
120V series 120V 500W
200V series 230V 500W
7
Pressure roller
Applies a pressure to the
heat roller and paper to
improve fusing efficiency.
heat roller and paper to
improve fusing efficiency.
8
Paper exit roller
Discharges paper after
fusing.
fusing.
9
Separation pawl
Separates paper from
the fusing roller
mechanically.
the fusing roller
mechanically.
10
Paper exit roller
Discharges paper
outside the machine
after fusing.
outside the machine
after fusing.
11
Pressure spring
Applies a pressure to the
heat roller, paper, and
pressure roller to
improve transfer
efficiency.
heat roller, paper, and
pressure roller to
improve transfer
efficiency.
7)
8)
11)
9)
1)
9)
10)
5)
4)
3)
2) POUT
6)
7)
8)
11)
1)
11)
10)
9)
6)
3)
2) POUT
4)
5)
5 – 10
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