Sharp AR-C172M (serv.man4) Service Manual ▷ View online
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 7
F. Motors, clutches, solenoids, fans
No.
Parts
Code,
signal name
Type
Name
Function
1
Exit select gate solenoid
Drives the exit path select gate.
GSS
Electromagnetic solenoid
2
Offset motor (Slide motor)
Drives the paper exit offset.
OSM
Stepping motor
3
Fusing drive motor
Drives the fusing unit.
FUSM
Stepping motor
4
Exhaust fan motor 1
Exhaust and cools the fusing section.
VFMP
DC motor
5
Exhaust fan motor 2
Exhaust and cools the fusing section.
VFMS
DC motor
6
Power unit cooling fan
motor
motor
Cools the power unit.
PSFM
DC motor
7
Drum motor (Y)
Drives the yellow photoconductor unit.
DM_Y
Stepping motor
8
Drum motor (M)
Drives the magenta photoconductor unit.
DM_M
Stepping motor
9
Drum motor (C)
Drives the cyan photoconductor unit.
DM_C
Stepping motor
10
Drum motor (K)
Drives the black photoconductor unit.
DM_K
Stepping motor
11
Printer controller cooling
fan motor
fan motor
Cools the printer controller.
12
PS motor
Drives and turns ON/OFF the resist roller.
PSM
Stepping motor
13
Process cooling fan motor
Exhaust and cools the process section.
PCFM
DC motor
14
Scanner motor
Drives the scanner unit.
SM
Stepping motor
15
PS front clutch
Transmits power of the paper feed motor to the manual
paper feed unit. (Controls ON/OFF.)
paper feed unit. (Controls ON/OFF.)
MTRC
Electromagnetic clutch
16
Paper feed motor
Drives the paper feed section and the paper transport
section.
section.
PFM
DC servo motor
17
Paper feed clutch
Transmits power of the paper feed motor to each transport
roller. (Controls ON/OFF.)
roller. (Controls ON/OFF.)
TRC
Electromagnetic clutch
18
Manual paper feed clutch
Controls ON/OFF of the manual paper feed roller. Presses
the paper pickup roller to paper.
the paper pickup roller to paper.
MPFC
Electromagnetic clutch
19
Paper feed drive clutch
Controls ON/OFF of the paper feed roller.
CPFC1
Electromagnetic clutch
20
No. 1 cassette lift-up motor
Drives the lift plate.
LUM1
Synchronous motor
21
Belt lift-up motor
Lifts the transfer belt unit.
BLUM
Stepping motor
22
23
1
2
3
4
5
6
7
8
24
14
12
11
9
13
15
17
19
20
21
18
16
10
26
25
27
28
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 8
G. Sensors, switches and heaters
22
Calibration plate open/
close solenoid
close solenoid
Switches the image density sensor.
CALS
Electromagnetic solenoid
23
Transfer belt motor
Drives the transfer belt.
BTM
Stepping motor
24
Pickup solenoid
Drives the document pickup roller.
PSOL
Electromagnetic solenoid
25
Pressure release solenoid
Paper exit roller pressure, release, control
RSOL
Electromagnetic solenoid
26
PS clutch
Document resist clutch
CLH
Electromagnetic clutch
27
RSPF motor
RSPF drive motor
MOT
Stepping motor
28
Gate solenoid
Gate switch solenoid in duplex
GSOL
Electromagnetic solenoid
No.
Parts
Code, signal
name
Type
Name
Function
2
O/C open/close sensor
Detects open/close of the document cover. (A timing signal of
document size detection is produced.)
document size detection is produced.)
OCSW
Photo sensor (Photo
transmission)
transmission)
3
Offset home position sensor
Detects the offset home position.
HPOS
Photo sensor (Photo
transmission)
transmission)
4
Paper exit tray full detection
Detects full of the face down paper exit tray.
TFD2
Photo sensor (Photo
transmission)
transmission)
5
Mirror home position sensor
Detects the scanner home position.
MHPS
Photo sensor (Photo
transmission)
transmission)
7
Dehumidifier heater switch
Turns ON/OFF the dehumidifier heater installed in the scanner
(reading) section and the paper feed section.
(reading) section and the paper feed section.
DHSW
(Japan only)
(Japan only)
—
8
Toner empty sensor (Y)
Detects toner empty (Y).
TES_Y
Photo sensor (Photo
transmission)
transmission)
9
Toner empty sensor (M)
Detects toner empty (M).
TES_M
Photo sensor (Photo
transmission)
transmission)
10
Toner empty sensor (C)
Detects toner empty (C).
TES_C
Photo sensor (Photo
transmission)
transmission)
11
Toner empty sensor (K)
Detects toner empty (K).
TES_K
Photo sensor (Photo
transmission)
transmission)
12
No. 1 paper transport sensor
Detects paper in front of the resist roller.
PPD1
Photo sensor (Photo
transmission)
transmission)
No.
Parts
Code,
signal name
Type
Name
Function
42
Front / right side / top view
43
41
33
34
32
31
30
40
39
38
37
36
35
5
3
4
2
45
47
48
49
50
53
54
51
52
46
7
8
9
10
11
11
12
13
Lift-up unit
14
15
16
17
19
18
21
22
23
25
26
24
27
28
29
AR-C172M 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
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 10
H. PWB 1
No.
Parts
Name
Function
1
CL inverter PWB
Drives the xenon lamp.
2
MFP PWB
Corrects images from the CCD and controls the operation panel.
3
Flash PWB (OP)
Includes the program to drive the OP PWB.
4
Flash PWB (SCN)
Includes the program to drive the SCN PWB.
5
Document detection LED PWB
Emits light for document size detection.
6
CCD PWB
Converts document images into electric signals.
7
Lift-up unit PWB tray
Detects the cassette size and interfaces the cassette lift-up motor signals.
8
Manual feed VR PWB
Outputs manual feed width signals.
9
Process control PWB (for black)
Outputs the black toner density on the transfer belt.
10
Process control PB (for color)
Outputs the color toner density on the transfer belt.
11
Document detection light receiving PWB
Outputs the document size detection signal.
12
Operation PWB
Outputs the key operation signal.
13
INV/LVDS PWB
Interfaces LCD from the MFPPWB and the touch panel signal, and drives the LCD
backlight.
backlight.
14
Network PWB
Network connection PWB
15
PRT controller PWB
Printer control PWB (HDD, NIC standard)
16
Flash PWB (FONT)
PWB which has font data
17
Flash PWB (PCL)
PWB which has the printer controller control program
18
Flash PWB (BOOT)
PWB which has the program to boot the printer controller
19
Flash PWB (ICU)
Includes the program to drive the ICU PWB.
20
ICU PWB
Performs image process and controls LED.
21
Interface PWB
Signal interface
Front / right side / top view
1
2
21
20
19
15
16
17
18
14
5
6
3
4
8
7
9
10
12
11
13
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