i. Cross sectional view
No.
Parts
Model
Note
Code
Signal name
Name
Type
Function/operation
Active condition
1
Fusing temperature
sensor
Thermistor
Detects the heat roller surface
temperature.
Analog signal (2.0
∼
5.0V)
2
No. 3 mirror (LSU)
Leads the laser beam to the OPC
drum.
3
No. 1 mirror (LSU)
4
No. 2 cylindrical lens
Corrects the laser beam deflection
caused by variations in the surface
angle of the scanning mirror. Also
prevents agaist dirt in the optical
section.
5
OPC drum
OPC
Forms latent electrostatic images.
6
Laser scanner
Scans laser beams to perform
imaging.
7
frror (No. 2 mirror)
(LSU)
Corrects the laser beam form and
pitch.
8
Laser diode
Generates the laser beam.
(Controls ON/OFF for imaging.)
9
PE SENSOR
PEMP IN
Paper empty
detector
Photo
transmission
sensor
Detects paper on the paper tray.
LOW (0V) when
paper is detected.
10
Paper pressure
spring
Presses paper onto the paper feed
roller at a proper pressure.
11
Paper pressure plate
Presses paper onto the paper feed
roller at a proper pressure.
12
Paper feed roller
Feeds paper.
13
Paper separator
Separates paper in paper feed.
14
PIN
SENSOR
PIN
Paper in detector
Photo
transmission
sensor
Detects whether the fed paper is
transported to the transfer position
or not. By the timing of this
detector signal, the relative
positions of the paper and the print
image are controlled.
LOW (0V) when
paper is detected.
29)
35)
28) MHPS
30) SL SENSOR
31)
34)
32)
33) CCD SENSOR
1)
2)
3)
4)
5)
6)
7)
8)
9) PE SENSOR
10)
11)
12)
13)
14) PIN SENSOR
15)
16)
17)
22)
21)
23)
24) POUT
25)
26)
18)
36)
FO-3800M
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