Sharp AR-M155 (serv.man3) Service Manual ▷ View online
AR-M150/M155/M155X EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 3
4. Motors and solenoids
(With optional SPF/RSPF installed)
No.
Part name
Control signal
Function / Operation
1
Main motor
MM
Drives the copier.
2
Scanner motor
MRMT
Drives the optical mirror base (scanner unit).
3
Toner motor
TM
Supplies toner.
4
Cooling fan motor
VFM
Ventilate the fuser section.
5
Resist roller solenoid
RRS
Resist roller rotation control solenoid
6
Paper feed solenoid
CPFS1
Cassette Paper feed solenoid 1
7
Multi paper feed solenoid
MPFS
Multi manual pages feed solenoid
8
SPF motor
SPFM
Drives the single pass feeder
9
Duplex motor
DMT
Devices the duplex paper transport section (Duplex model only)
10
Original feed solenoid
SPUS
Original pick up solenoid
11
SPF paper feed solenoid
SPFS
Original feed solenoid (RSPF only)
12
SPF gate solenoid
SGS
Controls the document reverse gate. (RSPF only)
13
Shifter motor
SFTM
Drives the shifter.
1
4
8
11
2
12
13
9
10
5
7
6
3
AR-M150/M155/M155X EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 4
5. Sensors and switches
(With optional SPF/RSPF installed)
No.
Name
Signal
Type
Function
Output
1
Scanner unit home position
sensor
sensor
MHPS
Transmission sensor
Scanner unit home position detection
"H" at home position
2
POD sensor
POD
Transmission sensor
Paper exit detection
"H" at paper pass
3
PPD2 sensor
PPD2
Transmission sensor
Paper transport detection 2
"L" at paper pass
4
Cassette detection switch
CED1
Micro-switch
Cassette installation detection
"H" at cassette insertion
5
PPD1 sensor
PPD1
Transmission sensor
Paper transport detection 1
"L" at paper pass
6
Door switch
DSW
Micro-switch
Door open/close detection
(safety switch for 24V)
(safety switch for 24V)
1 or 0V of 24V at door open
7
SPF sensor
SPID/
SD SW
SD SW
Transmission sensor
Paper entry detection
Cover open/close detection
Cover open/close detection
"L" at paper pass
8
SPPD sensor
SPPD
Transmission sensor
Paper transport detection
"L" at paper pass
9
PD1 sensor
PD1
Micro-switch
Paper width detect
"H" at A4 size or less
"L" at A4 size or more
"L" at A4 size or more
1
8
7
2
3
4
5
9
6
AR-M150/M155/M155X EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 5
6. PWB unit
(With optional SPF/RSPF and FAX installed)
No.
Name
Function
1
Exposure lamp inverter PWB
Exposure lamp (CCFL) control
2
Main PWB (MCU)
Copier control
3
Operation PWB
Operation input/display
4
Power PWB
AC power input, DC voltage control, High voltage control
5
CCD sensor PWB
For image scanning
6
LSU motor PWB
For polygon motor drive (In the LSU)
7
TCS PWB
For toner sensor control
8
LSU PWB
For laser control (In the LSU)
9
FAX-operation PWB
FAX operation input (AR-FX9 option)
10
Modem PWB
FAX control (AR-FX9 option)
1
5
2
8
6
7
3
4
9
10
AR-M150/M155/M155X EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 6
7. Cross sectional view
(With optional RSPF installed)
No.
Part name
Function and operation
1
Scanner unit
Illuminates the original with the copy lamp and passes the reflected light to the lens unit(CCD).
2
Exposure lamp
Exposure lamp (CCFL) Illuminates original
3
LSU (Laser unit)
Converts the original image signal into laser beams and writes onto the drum.
4
Paper exit roller
Roller for paper exit
5
Main charger
Provides negative charges evenly to the drum surface.
6
Heat roller
Fuses toner on the paper. (Teflon roller)
7
Pressure roller
Fuses toner on the paper. (Silicon rubber roller)
8
Drum
Forms images.
9
Transfer unit
Transfers images onto the drum.
10
Pickup roller
Picks up the manual feed paper. (In multi feed only)
11
Manual paper feed tray
Tray for manual feed paper
12
Manual paper feed roller
Transport the paper from the manual paper feed port.
13
PS roller unit
Takes synchronization between the lead edge and the rear edge of the paper.
14
Paper feed roller
Picks up a sheet of paper from the cassette.
15
Pickup roller
Picks up documents. (SPF/RSPF)
16
Separation roller
Separates documents to feed properly. (SPF/RSPF)
17
PS roller
Feeds documents to the scanning section. (SPF/RSPF)
18
Paper exit roller
Discharges documents. (SPF/RSPF)
1
4
3
5
18
15
6
7
8
9
10
11
12
14
13
16
17
2
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