Sharp MX-B381 / MX-B401 (serv.man7) Service Manual ▷ View online
MX-B381/B401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 2
2. Internal structure
No.
Name
Function/Operation
Note
1
Toner cartridge
When toner is exhausted in a cartridge, remove the cartridge and replace it
with a new one.
with a new one.
2
Drum cartridge
This cartridge stores a drum. When the specified life is reached, replace it
with a new cartridge.
with a new cartridge.
3
Developer cartridge
This cartridge stores developer. When the specified life is reached, replace it
with a new cartridge.
with a new cartridge.
4
MC cleaning rod insertion port
When the copy quality is degraded by dirt on the MC unit, the rod to clean the
MC unit is inserted into this port.
MC unit is inserted into this port.
5
LSU cleaning rod insertion port
When the copy quality is degraded by dirt on the LSU, the rod to clean the
LSU is inserted into this port.
LSU is inserted into this port.
6
Fusing section
Fuses images transferred on paper by heat.
Note: The fusing section is heated
to a high temperature. Be careful
not to burn when paper jam.
to a high temperature. Be careful
not to burn when paper jam.
7
Transfer belt
The transfer belt transfers toner on the drum.
Do not touch or scratch. It may
cause degraded images.
cause degraded images.
8
Right side cover
Opened when a paper jam is generated.
9
Waste toner box
Receives waste toner when copying or printing.
The waste toner box is collected
by the servicemen.
by the servicemen.
10
Waste toner box release lever
When the waste toner box is removed, this lever is rotated to release lock.
11
Drum positioning plate unit release
lever
lever
Releases lock of the drum positioning plate unit. When a drum cartridge or a
developer cartridge is replaced, rotate this lever to open the drum positioning
plate unit.
developer cartridge is replaced, rotate this lever to open the drum positioning
plate unit.
10
9
1
6
7
8
3
2
5
4
11
11
MX-B381/B401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 3
3. RSPF
4. Connectors
No.
Name
Function/ Operation
1
Document feed roller
Transports a document automatically.
2
Document feed section cover
This cover is opened when removing a paper jam or cleaning the document feed roller.
3
Document guide
Guides to scan a document properly. Set to the set document size.
4
Document set table
A document is set on this table. In the case of a single-surface document, set it face up.
5
Document exit section
The scanned document is discharged to this section.
6
Document scan section
The document set on the document set table is scanned in this section.
7
Document table (Glass surface)
Used for thick documents or book documents which cannot be entered to the auto document feeder.
No.
Name
Function/ Operation
1
USB connector (Type A)
Used to connect a USB hub or USB memory. This connector cannot be used when shipping from the factory.
2
LAN connector
Used to connect a LAN cable to use this machine in a network.
3
USB connector (Type B)
Used to connect a computer to use this machine as a printer.
4
Connector
This connector is used by the serviceman.
5
Inner finisher connection connector
This connector is used to connect the inner finisher and the main unit when the inner finisher (option) is installed.
6
USB connector (Type A)
Used to connect a USB hub or USB memory.
2
1
3
4
5
6
7
6
4
1
2
3
3
5
MX-B381/B401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 4
5. Operation panel
No.
Name
Function/Operation
1
Touch panel
Messages and keys appear in the touch panel display.
Touch the displayed keys to perform a variety of operations.
When a key is touched, a beep sounds and the selected item is highlighted. This provides confirmation as you
perform an operation.
Touch the displayed keys to perform a variety of operations.
When a key is touched, a beep sounds and the selected item is highlighted. This provides confirmation as you
perform an operation.
2
[SYSTEM SETTINGS] key
Press this key to display the system settings menu screen. The system settings are used to configure paper tray
settings, store addresses for transmission operations, and adjust parameters to make the machine easier to use.
settings, store addresses for transmission operations, and adjust parameters to make the machine easier to use.
3
[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.
4
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.
5
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).
to enter numeric value settings (except for the system settings).
6
[CLEAR] key (
)
Press this key to return the number of copies to "0".
7
[HOME] key
Touch this key to display the home screen. Frequently used settings can be registered in the home screen to
enable quick and easy operation of the machine.
enable quick and easy operation of the machine.
8
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.
9
[START] key
Press this key to copy or scan an original. This key is also used to send a fax in fax mode.
10
[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.
11
[#/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 dialing.
used when dialing.
12
[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.
13
[STOP] key (
)
Press this key to stop a copy job or scanning of an original.
14
[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.
15
[POWER] key (
)
Use this key to turn the machine power on and off.
16
Main power indicator
This lights up when the machine's main power switch is in the "on" position.
JOB STATUS
IMAGE SEND
HOME
PRINT
READY
DATA
DATA
DATA
LINE
SYSTEM
SETTINGS
LOGOUT
1
2
3
9
4
5
6
8
13
16
15
10
11
7
12
14
MX-B381/B401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 5
6. Sensors and detectors
Signal name
Name
Type
Function/Operation
Note
1TUD_CL
Transfer belt separation detector CL
Transmission type
Detects separation of the transfer belt.
High voltage PWB
holder unit
holder unit
1TUD_K
Transfer belt separation detector BK
Transmission type
Detects initialization of the primary transfer unit.
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
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_R
Registration sensor
Reflection type
Detects the toner patch density. Detects open/close of
the reference reflection plate, the secondary transfer
roller transfer position, and the non-transfer position.
the reference reflection plate, the secondary transfer
roller transfer position, and the non-transfer position.
Registration unit
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
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
SOCD
SCOV
SPED
MHPS
TFD2
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
1TUD_K
1TUD_CL
REGS_R
SPPD1
SPPD2
Click on the first or last page to see other MX-B381 / MX-B401 (serv.man7) service manuals if exist.