Read Sharp AR-C170 (serv.man23) Service Manual online
AR-C170M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 9
13
Paper feed door open detection
Detects open/close of the paper feed door.
DSWR
Micro switch
14
Manual feed paper empty detection
Detects paper empty on the paper tray.
MPED
Photo sensor (Photo
transmission)
transmission)
15
Manual feed tray pulling out detection 2
Detects the paper tray position.
MTOP2
Contact switch
16
No. 1 cassette paper size detection 1
Detects the paper size set by the paper size set blocks.
C1SS1
Contact switch
17
No. 1 cassette paper size detection 2
Detects the paper size set by the paper size set blocks.
C1SS2
Contact switch
18
No. 1 cassette paper size detection 3
Detects the paper size set by the paper size set blocks.
C1SS3
Contact switch
19
No. 1 cassette paper size detection 4
Detects the paper size set by the paper size set blocks.
C1SS4
Contact switch
21
Manual feed paper length detection 2
Detects the paper length.
MPLD2
Photo sensor (Photo
transmission)
transmission)
22
Manual feed tray pulling out detection 1
Detects the paper tray position.
MTOP1
Contact switch
23
Manual feed paper length detection 1
Detects the paper length.
MPLD1
Photo sensor (Photo
transmission)
transmission)
24
Humidity sensor
Detects the ambient humidity.
HUD
—
25
No. 1 cassette paper feed detection
Detects paper exit from No. 1 paper tray.
PFD1
Photo sensor (Photo
transmission)
transmission)
26
Manual feed paper width detection
Detects the paper width.
MPWS
Volume (Variable
resistor)
resistor)
27
No. 1 cassette lift-up upper limit
detection
detection
Detects the upper limit position of paper.
LUD1
Photo sensor (Photo
transmission)
transmission)
28
PS front sensor
Detects paper in front of PS.
PPD2
Photo sensor (Photo
transmission)
transmission)
29
No. 1 cassette paper empty detection
Detects paper empty on the paper tray.
PED1
Photo sensor (Photo
transmission)
transmission)
30
Dehumidifier heater
Dehumidifier hater for the main body cassette. (Japan only)
DH
—
31
Belt lift-up upper limit detection
Detects lift-up or lift-down of the transfer belt.
BLUD
Photo sensor (Photo
transmission)
transmission)
32
Belt waste toner full detection
Detects belt waste toner full.
BTNF
Contact switch
33
Color toner concentration (process
control) sensor/Auto image Reg.
control) sensor/Auto image Reg.
Detects the toner patch density (color toner) in image density
correction operation. 2-sensors on PWB.
correction operation. 2-sensors on PWB.
PCS_C
Photo sensor (Photo
transmission)
transmission)
34
Lower heat roller thermistor
Detects the temperature on the heat roller surface.
THSD
Thermistor
35
Lower heat roller thermostat
Detects an abnormally high temperature and turns off the heater
lamp.
lamp.
HLTS2
Thermostat
Thermal switch
Thermal switch
36
Machine paper exit sensor 1
Detects discharged paper.
POD1
Photo sensor (Photo
transmission)
transmission)
37
Upper heat roller thermistor
Detects the temperature on the heat roller surface.
THSU
Thermistor
38
Upper heat roller thermostat
Detects an abnormally high temperature and turns off the heater
lamp.
lamp.
HLTS1
Thermostat
Thermal switch
Thermal switch
39
Power switch
Used to switch the nighttime mode/normal mode.
MSW
Seesaw switch
39
Main switch
Turns ON/OFF the main power.
MSW
Seesaw switch
40
Front door open detection
Detects open/close of the front door.
DSWF
Micro switch
41
Paper exit door open detection
Detects open/close of the paper exit door.
DSWL
Micro switch
42
Face-up paper exit tray full detection
Detects full of the face-up paper exit tray.
TFD
Photo sensor (Photo
transmission)
transmission)
43
Machine paper exit sensor 2
Detects discharged paper.
POD2
Photo sensor (Photo
transmission)
transmission)
45
Document set sensor
Detects presence of a document.
W0
Photo sensor (Photo
transmission)
transmission)
46
Open/close sensor
Detects open/close of the paper feed unit.
COVER
Photo sensor (Photo
transmission)
transmission)
47
Document width sensor (A4R, LTR, A5)
Detects the document width on the tray.
W1
Photo sensor (Photo
transmission)
transmission)
48
Document width sensor (B4, B5)
Detects the document width on the tray.
W2
Photo sensor (Photo
transmission)
transmission)
49
Document width sensor (WLTR, A5R,
A4, LT)
A4, LT)
Detects the document width on the tray.
W3
Photo sensor (Photo
transmission)
transmission)
50
Paper entry sensor
Detects presence of a document.
PAPER
Photo sensor (Photo
transmission)
transmission)
51
Document length detection SW (Short)
Detects the document length on the tray.
L1
Photo sensor (Photo
transmission)
transmission)
52
Document length detection SW (Long)
Detects the document length on the tray.
L2
Photo sensor (Photo
transmission)
transmission)
53
Book sensor
Detects floating of the RSPF.
COVER OPEN
Photo sensor (Photo
transmission)
transmission)
54
Paper exit sensor
Detects presence of a document.
PO
Photo sensor (Photo
transmission)
transmission)
No.
Parts
Code, signal
name
Type
Name
Function
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