Sharp MX-M904 / MX-M1204 (serv.man10) Service Manual ▷ View online
MX-M1204 EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 10
G. Clutches and solenoids
Signal name
Name
Type
Function / Operation
ADUCS
Duplex select gate solenoid
Electromagnetic solenoid
Select gate solenoid for transport in the ADU section
C1PFC
Cassette 1 paper transport clutch
Electromagnetic clutch
Controls ON/OFF of the paper feed roller in the Tray 1 paper feed
section.
section.
C1PTC
Horizontal transport clutch
Electromagnetic clutch
Controls ON/OFF of the transport roller.
C1PUS
Cassette 1 paper pickup solenoid
Electromagnetic solenoid
Paper pickup solenoid (Tray 1)
C2PFC
Cassette 2 paper transport clutch
Electromagnetic clutch
Controls ON/OFF of the paper feed roller in the Tray 2 paper feed
section.
section.
C2PUS
Cassette 2 paper pickup solenoid
Electromagnetic solenoid
Paper pickup solenoid (Tray 2)
C3PFC
Cassette 3 paper transport clutch
Electromagnetic clutch
Controls ON/OFF of the paper feed roller in the Tray 3 paper feed
section.
section.
C3PUS
Cassette 3 paper pickup solenoid
Electromagnetic solenoid
Paper pickup solenoid (Tray 3)
C4PFC
Cassette 4 paper transport clutch
Electromagnetic clutch
Controls ON/OFF of the paper feed roller in the Tray 4 paper feed
section.
section.
C4PUS
Cassette 4 paper pickup solenoid
Electromagnetic solenoid
Paper pickup solenoid (Tray 4)
FRS
Lower pawl separation solenoid
Electromagnetic solenoid
Controls the lower pawl separation solenoid.
LCCPTC
LCC transport clutch
Electromagnetic clutch
Controls ON/OFF of the transport roller.
MPFTC
Manual transport clutch
Electromagnetic clutch
Controls ON/OFF of the transport roller.
POCS
Face-up/face-down select gate solenoid
Electromagnetic solenoid
Face-up/face-down select gate solenoid
PSPS
Separation solenoid
Electromagnetic solenoid
Drives the separation pawl of the OPC drum.
TURS
Transfer separation solenoid
Electromagnetic solenoid
Controls of the transport roller separation.
VPTC1
Vertical transport clutch (Lower)
Electromagnetic clutch
Controls ON/OFF of the vertical transport roller.
VPTC2
Vertical transport clutch (Intermediate)
Electromagnetic clutch
Controls ON/OFF of the vertical transport roller.
VPTC3
Vertical transport clutch (Upper)
Electromagnetic clutch
Controls ON/OFF of the vertical transport roller.
POCS
PSPS
C3PUS
LCCPTC
MPFTC
C4PUS
VPTC3
ADUCS
FRS
VPTC2
T2PUS
T1PFC
T1PUS
T2PFC
C3PFC
C4PFC
T1PTC
VPTC1
TURS
MX-M1204 EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 11
H. Drive motors
Signal name
Name
Type
Function / Operation
ADM1
ADU transport motor 1
Stepping motor
Drives the ADU transport roller 1.
ADM2
ADU transport motor 2
Stepping motor
Drives the ADU transport roller 2 .
ASRM
ADU reverse motor
Stepping motor
Drives the ADU reverse roller.
BOTM
Toner cartridge motor
DC brush motor
Transports toner.
C1LUM
Paper lift up motor (Tray 1)
DC brush motor
Drives the paper tray lift. (This is the same as the T1LUM in
the circuit diagram.)
the circuit diagram.)
C2LUM
Paper lift up motor (Tray 2)
DC brush motor
Drives the paper tray lift. (This is the same as the T2LUM in
the circuit diagram.)
the circuit diagram.)
C3LUM
Paper lift up motor (Tray 3)
DC brush motor
Drives the paper tray lift.
C4LUM
Paper lift up motor (Tray 4)
DC brush motor
Drives the paper tray lift.
DCLM
Decurler motor
DC brushless motor
Drives the decurler roller.
DM
Drum motor
DC brushless motor
Drives the drum.
DVM
Developing motor
DC brushless motor
Drives the developing roller.
FUM
Fusing motor
DC brushless motor
Drives the fusing roller.
FURM
Fusing rear motor
Stepping motor
Drives the fusing rear roller.
MCCM
Main charger cleaning motor
DC brush motor
Cleans the main charger.
MIM
Scanner motor
Stepping motor
Drives the copy lamp unit.
MM1
Paper feed motor 1
DC brushless motor
Drives the paper feed section 1.
MM2
Paper feed motor 2
DC brushless motor
Drives the paper feed section 2.
POM
Paper exit motor
Stepping motor
Drives the paper exit roller.
PSM
PS motor
Stepping motor
Drive the PS roller.
SBRM
Paper exit reverse motor
Stepping motor
Drives the paper exit reverse roller.
SLUM
DSPF lift-up motor
PM stepping motor
Lifts up and move down the document tray.
SPFM
DSPF transport motor
Stepping motor
Drives the transport roller.
SPOM
DSPF paper exit motor
Stepping motor
Drives the paper exit roller.
SPSM
DSPF PS motor
Stepping motor
Drives the PS roller.
SPUM
DSPF paper feed motor
Stepping motor
Drives the paper feed roller.
SRFM
DSPF scan transport motor
Stepping motor
Drives the scan transport roller.
SRRM
DSPF PS motor
Stepping motor
Drive the PS roller.
TM1
Toner motor 1
Stepping motor
Transports toner.
TM2
Toner motor 2
Stepping motor
Transports toner.
TRM
Transport motor
Stepping motor
Drives the transport roller.
VPM
Vertical transport motor
Stepping motor
Drives the vertical transport roller.
WEBM
Web motor
Synchronous motor
Drives the fusing roller cleaning.
DCLM
DM
FUM
DVM
WEBM
TM2
ADM2
TM1
MCCM
C2LUM
VPM
PSM
BOTM
TRM
ASRM
POM
ADM1
SBRM
SRFM
SRRM
SPSM
MM2
FURM
MM1
C3LUM
C4LUM
C1LUM
MIM
SPFM
SPUM
SPOM
SLUM
SPOM
SLUM
MX-M1204 EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 12
I.
Lamps
Signal name
Name
Type
Function / Operation
Note
CLI
Scanner lamp
LED
Radiates lights onto a document for the CCD to
scan the document image.
scan the document image.
DL1
Discharge lamp
Fuse lamp
Discharging the OPC drum.
DSPF COPY LAMP
DSPF copy lamp
LED
Radiates lights onto a document for the CCD to
scan the document image.
scan the document image.
HL1, HL2, HL4
Upper heater lamp
Halogen lamp
Heats the upper heat roller.
"HL4": Europe, other
desitnations.
desitnations.
PTDL1
Transfer section front discharge lamp
LED
Discharges the OPC drum surface of the transfer
section front.
section front.
DSPF COPY LAMP
CLI
DL1
HL1, HL2, HL4
PTDL1
MX-M1204 EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 13
J. Fans and Filters
Signal name
Name
Type
Function / Operation
Trouble code
CCDFM
CCD cooling fan
Fan motor
Cools the CCD and the CL inverter.
L2-10
CFM-ADU1a
Reverse transport cooling fan
Sirocco fan
Cools paper in the reverse section.
L4-38
CFM-ADU1b
Reverse cooling fan
Sirocco fan
Cools the reverse section.
L4-39
CFM-ADU2a
ADU section paper cooling fan 1
Axial-flow fan (
60)
Cools paper in the ADU section.
L4-48
CFM-ADU2b
ADU section paper cooling fan 2
Axial-flow fan (
60)
Cools paper in the ADU section.
L4-49
CFM-CL1
Process cooling fan 1
Axial-flow fan (
60)
Cools the process section.
L4-50
CFM-DC1
Power cooling fan 1
Axial-flow fan (
60)
Cools the power section.
L4-32
CFM-CL2
Process cooling fan 2
Axial-flow fan (
60)
Cools the process section.
L4-51
CFM-CL3
Process cooling fan 3
Axial-flow fan (
60)
Cools the process section.
L4-52
CFM-CL4
Process cooling fan 4
Axial-flow fan (
60)
Cools the process section.
L4-53
CFM-DC2
Power cooling fan 2
Axial-flow fan (
60)
Cools the power section.
L4-32
CFM-DC3
Power cooling fan 3
Axial-flow fan (
60)
Cools the power section.
L4-47
CFM-DV1
Developing cooling fan 1
Axial-flow fan (
60)
Cools the developing section.
L4-46
CFM-PA1
Paper cooling fan
Axial-flow fan (
60)
Cools paper in the paper exit section.
L4-43
CFM-PC
Process section cooling fan
Sirocco fan
Cools the process section.
L4-58
CFM-PS
PS cooling fan
Axial-flow fan (
40)
Cools the PS section. (120/105cpm machines)
L4-54
CFM-PO1
Polygon cooling fan
Axial-flow fan (
60)
Cools the polygon section.
L4-34
CFM-Tr
Process cooling fan
Axial-flow fan (
40)
Cools the process section.
L4-55
FM-CTL1
CTL cooling fan
Axial-flow fan (
60)
Cools the controller section.
L4-30
FM-DV1
Toner suction fan
Sirocco fan
Sucks toner.
L4-36
FM-HDD
HDD cooling fan
Axial-flow fan (
60)
Cools the HDD.
L4-30
SPFFAN1
DSPF motor cooling fan 1
Fan motor
Cools the DSPF motor.
U5-16
SPSFAN
Sub power supply cooling fan
Axial-flow fan (
60)
Cools the sub power supply.
L4-28
VFM-EX
Machine exhaust fan 1
Axial-flow fan (
120)
Discharges heat from the fusing section.
L4-31
VFM-EX1
Ozone exhaust fan 1
Sirocco fan
Discharges ozone.
L4-40
VFM-EX2
Ozone exhaust fan 2
Sirocco fan
Discharges ozone.
L4-41
No.
Name
Function / Operation
1
Dust cover
Collects dust in sucked air.
2
Exhaust filter
Sucks dust in exhaust air.
3
Ozone filter
Decomposes ozone generated in the process section.
4
Toner filter
Prevents toner dispersion.
5
DVBOX filter
Prevents toner dispersion.
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