Sharp DX-C310 / DX-C311 / DX-C400 / DX-C401 (serv.man5) Service Manual ▷ View online
DX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 5
B. DX-C400/C310 (4.3 Inch LCD model)
No.
Name
Function/Operation
1
Display
Messages and keys appear in the display.
Use the arrow keys and the [OK] key to select displayed items and perform various operations.
Use the arrow keys and the [OK] key to select displayed items and perform various operations.
2
[BACK] key
Press this key to return to the previous screen without discarding your settings.
3
[OK] key
Press this key to enter a selected setting.
4
Arrow keys
Press these keys to move the selection frame that is used to select setting keys and items in the display.
5
Mode select keys and indicators
Use these keys to select the display mode.
The indicator of a key lights when the key is selected.
[PRINT] key:
When you wish to print a print hold job, press this key to switch to print mode.
[IMAGE SEND] key:
Press this key to select network scanner / fax mode to use the scanner function or fax function.
[COPY] key:
Press this key to select copy mode. Hold the [COPY] key down to view the machine's total page use count and
amount of toner remaining.
The indicator of a key lights when the key is selected.
[PRINT] key:
When you wish to print a print hold job, press this key to switch to print mode.
[IMAGE SEND] key:
Press this key to select network scanner / fax mode to use the scanner function or fax function.
[COPY] key:
Press this key to select copy mode. Hold the [COPY] key down to view the machine's total page use count and
amount of toner remaining.
6
PRINT mode indicators
• READY indicator
Print jobs can be received when this indicator is lit.
• DATA indicator
This blinks while print data is being received and lights steadily while printing is taking place.
7
IMAGE SEND mode indicators
• LINE indicator
This lights up during transmission or reception of a fax or Internet fax. This also lights during transmission of an
image in scan mode.
image in scan mode.
• DATA indicator
This blinks when a received fax or Internet fax cannot be printed because of a problem such as out of paper.
This lights up when there is a transmission job that has not been sent.
This lights up when there is a transmission job that has not been sent.
8
Numeric keys
These are used to enter the number of copies, fax numbers, and other numerical values. These keys are also
used to enter numeric value settings (except for the system settings).
used to enter numeric value settings (except for the system settings).
9
[JOB STATUS] key
Press this key to display the job status screen. The job status screen is used to check information on jobs and to
cancel jobs.
cancel jobs.
10
[SYSTEM SETTINGS] key
Press this key to display the system settings menu screen. The system settings are used to configure paper tray
settings, and adjust parameters to make the machine easier to use.
settings, and adjust parameters to make the machine easier to use.
11
Sharp OSA shortcut key
Press this key to display a shortcut key to Sharp OSA mode (when the application integration module is installed).
Custom keys also appear in this screen.
Shortcuts to frequently used special modes and other settings can be stored in the custom keys.
Custom keys also appear in this screen.
Shortcuts to frequently used special modes and other settings can be stored in the custom keys.
12
[CLEAR] key (
)
Press this key to return the number of copies to "0".
13
[BLACK & WHITE START] key
Press this key to copy or scan an original in black and white. This key is also used to send a fax in fax mode.
14
[COLOUR START] key
Press this key to copy or scan an original in colour.
This key cannot be used for fax or Internet fax.
This key cannot be used for fax or Internet fax.
15
[LOGOUT] key (
)
Press this key to log out after you have logged in and used the machine. When using the fax function, this key can
also be pressed to send tone signals on a pulse dial line.
also be pressed to send tone signals on a pulse dial line.
16
[#/P] key (
)
When using the copy function, press this key to use a job program. When using the fax function, this key can be
used when dialling.
used when dialling.
17
[CLEAR ALL] key (
)
Press this key to return to the initial operation state.
Use this key when you wish to cancel all settings that have been selected and start operation from the initial state.
Use this key when you wish to cancel all settings that have been selected and start operation from the initial state.
18
[STOP] key (
)
Press this key to stop a copy job or scanning of an original.
19
[POWER SAVE] key (
) / indicator
Use this key to put the machine into auto power shut-off mode to save energy.
The [POWER SAVE] key (
The [POWER SAVE] key (
) blinks when the machine is in auto power shut-off mode.
20
[POWER] key (
)
Use this key to turn the machine power on and off.
21
Main power indicator
This lights up when the machine's main power switch is in the "on" position.
LOGOUT
COPY
PRINT
OK
BACK
JOB STATUS
SYSTEM
SETTINGS
IMAGE SEND
READY
DATA
DATA
DATA
LINE
8
12
13
14
5
6
7
2
3
4
1
9
10 11
18
20 21
15
16
17
19
DX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 6
6. Sensors and detectors
Signal name
Name
Type
Function/Operation
Note
1TUD_CL
Transfer belt separation detector CL
Transmission type
Detects separation of the color section of the transfer
belt.
belt.
High voltage PWB
holder unit
holder unit
1TUD_K
Transfer belt separation detector BK
Transmission type
Detects separation of the black section of the transfer
belt.
belt.
Frame unit
APPD1
ADU transport path detector 1
Transmission type
Detects paper pass in the upper stream of the
switchback section.
switchback section.
Right door unit
APPD2
ADU transport path detector 2
Transmission type
Detects paper pass in the middle stream of the
switchback section.
switchback section.
Right door unit
CLUD1
Tray 1 upper limit detector
Transmission type
Detects that the top surface of the paper stored in the
tray 1 is lifted to the top.
tray 1 is lifted to the top.
Paper feed unit
CPED1
Tray 1 paper empty detector
Transmission type
Detects that paper is stored in the tray 1.
Paper feed unit
CPFD1
Paper transport detector 1
Reflection type
Detects paper when passes the transport roller 1.
Paper feed unit
CSPD1
Tray 1 paper remaining quantity
detector
detector
Transmission type
Detects the paper remaining quantity in the tray 1.
Lift-up unit
DHPD_CL
Drum cartridge (CL) rotation detector
Transmission type
Detects the rotating state of the color drum cartridge.
Main drive unit
DHPD_K
Drum cartridge (BK) rotation detector
Transmission type
Detects the rotating state of the black drum cartridge.
Main drive unit
HLPCD
Fusing roller pressure release detector
Transmission type
Detects separation of the upper and the lower heat
rollers.
rollers.
Fusing unit
MHPS
Scanner home position detector
Transmission type
Detects the scanner home position.
Scanner unit
MPED
Manual feed paper empty detector
Transmission type
Detects paper empty in the manual paper feed tray.
Manual paper feed unit
MPLD1
Manual feed paper length detector 1
Transmission type
Detects the length of paper in the manual paper feed
tray.
tray.
Manual paper feed unit
MPWS
Manual paper feed tray paper width
sensor
sensor
Volume resistor
Detects the width of the paper guide in the manual
paper feed tray.
paper feed tray.
Manual paper feed unit
POD1
Fusing rear detector
Transmission type
Detects paper exit from the fusing section.
Frame fusing unit
POD2
Paper exit detector
Transmission type
Detects paper which is discharged.
Paper exit lower PG unit
PPD1
Paper transport detector 2
Transmission type
Detects paper when passes the transport roller 2.
Paper feed unit
PPD2
Paper transport detector 3
Reflection type
Detects paper in front of the registration roller.
Frame unit
REGS_F
Registration sensor
Reflection type
Detects registration shift.
Registration unit
REGS_R
RTH_EX1
RTH_EX1
External heat roller contact thermistor 1
Thermistor
Detects the temperature of the external heat roller.
Fusing unit
RTH_EX2
External heat roller contact thermistor 2
Thermistor
SOCD
SCOV
SPED
MHPS
TFD2
TCS_Y
TCS_M
TCS_C
TCS_K
PPD2
APPD2
CPED1
CSPD1
CLUD1
MPED
MPLD1
MPWS
TH/HUD
CPFD1
PPD1
POD2
POD1
APPD1
HLPCD
RTH_EX1
RTH_EX2
RTH_Sub
RTH_Low
RTH_Main
REGS_F
1TUD_K
1TUD_CL
DHPD_CL
DHPD_K
REGS_R
SPPD1
SPPD2
DX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 7
7. Switches
RTH_Low
Lower heat roller contact thermistor
Thermistor
Detects the temperature of the lower heat roller.
Fusing unit
RTH_Main
Upper heat roller non-contact
thermistor
thermistor
Non-contact
thermistor
thermistor
Detects the temperature of the upper heat roller.
Fusing unit
RTH_Sub
Upper heat roller contact thermistor
Thermistor
SCOV
RSPF cover open/close detector
Transmission type
Detects open/close of the RSPF cover.
RSPF unit
SOCD
RSPF open/close detector
Transmission type
Detects open/close of the RSPF unit itself.
RSPF unit
SPED
RSPF document empty detector
Transmission type
Detects that a document is in the document tray.
RSPF unit
SPPD1
RSPF transport detector 1
Transmission type
Detects a document which passes the paper path.
RSPF unit
SPPD2
RSPF transport detector 2
Transmission type
Detects a document which passes the paper path.
RSPF unit
TCS_C
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(C)
(C)
Developing cartridge
TCS_K
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(K)
(K)
Developing cartridge
TCS_M
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(M)
(M)
Developing cartridge
TCS_Y
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(Y)
(Y)
Developing cartridge
TFD2
Paper exit tray full detector
Transmission type
Detects the full state of the paper exit tray.
Paper exit upper PG unit
TH/HUD
Temperature humidity sensor
Temperature
humidity sensor
humidity sensor
Detects the temperature and the humidity around the
machine.
machine.
Right door unit
Signal name
Name
Type
Function/Operation
Note
DSW-F
DRCRU_Y
DRCRU_M
DRCRU_C
DRCRU_K
1TNFD
DSW-R
PWRSW
MSW
DX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 8
8. Clutches and solenoids
Signal name
Name
Type
Function/Operation
1TNFD
Waste toner full detection switch
Micro switch
Detects the waste toner full.
DRCRU_C
OPC drum initial (new OPC drum) detector (C)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DRCRU_K
OPC drum initial (new OPC drum) detector (BK)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DRCRU_M
OPC drum initial (new OPC drum) detector (M)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DRCRU_Y
OPC drum initial (new OPC drum) detector (Y)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DSW-F
Front door open/close switch
Micro switch
Detects open/close of the front door, and turns ON/OFF the power line of
the fusing, the motor and the LSU laser.
the fusing, the motor and the LSU laser.
DSW-R
Right door open/close switch
Micro switch
Detects open/close of the right door unit, and turns ON/OFF the power
line of the fusing, the motor and the LSU laser.
line of the fusing, the motor and the LSU laser.
MSW
Main switch
Seesaw switch
Turns ON/OFF the main DC power source.
PWRSW
Operation panel power switch
Push switch
Outputs the ON/OFF control signal of the DC power source.
Signal name
Name
Type
Function/Operation
1TURC_1
Primary transfer separation clutch 1
Electromagnetic clutch
Controls the primary transfer separation mode.
1TURC_2
Primary transfer separation clutch 2
Electromagnetic clutch
Controls the primary transfer separation mode.
2TURC
Secondary transfer separation clutch
Electromagnetic clutch
Controls open/close of the resist sensor cover.
ADUC1
ADU transport clutch 1
Electromagnetic clutch
Controls ON/OFF of the roller in the switchback section.
CPFC
Tray vertical transport clutch
Electromagnetic clutch
Controls ON/OFF of the paper transport roller in the tray paper feed section.
CPUC1
Paper feed clutch (Tray paper feed)
Electromagnetic clutch
Controls ON/OFF of the roller in the tray paper feed section.
HLPCS
Fusing pressure release solenoid
Electromagnetic solenoid
Controls the pressure applied to the upper and the lower heat rollers in the
fusing section.
fusing section.
MPFS
Paper pickup solenoid
(Manual paper feed)
(Manual paper feed)
Electromagnetic solenoid
Controls ON/OFF of the pick-up operation of the paper feed roller in the
manual paper feed section.
manual paper feed section.
SPUS
RSPF paper feed roller solenoid
Electromagnetic solenoid
Controls ON/OFF of the paper feed roller in the RSPF paper feed section.
SPUS
1TURC_1
1TURC_2
2TURC
HLPCS
MPFS
ADUC1
CPFC
CPUC1
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