Sharp MX-6500N / MX-7500N (serv.man18) Service Manual ▷ View online
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 6
C. Drive motors, clutches, PWB’s, and lamps
SPPD2
Document pass sensor 2 (DSPF)
Light transmission
Detects document pass in front of the transport roller 1.
SPPD3
Document pass sensor 3 (DSPF)
Light transmission
Detects document pass in front of the No. 2 registration roller.
SPPD4
Document pass sensor 4 (DSPF)
Light transmission
Detects document pass in front of the front-surface document scan.
SPPD5
Document pass sensor 5 (DSPF)
Light transmission
Detects document pass in front of the bask-surface document scan.
SPRDMD
Document size detector (DSPF)
Light transmission
Outputs the document size judgment signal when feeding random
documents.
documents.
SPWS
Document width sensor (DSPF)
Resistance volume
Detects the document width on the document feed tray.
STLD
Document feed tray lower limit detector
(DSPF)
(DSPF)
Light transmission
Detects the lower limit position of the document feed tray.
STUD
Document feed tray upper limit detector
(DSPF)
(DSPF)
Light transmission
Detects the upper limit position of the document feed tray.
Signal name
Name
Type
Function/Operation
DSPF_COPY_
LAMP
LAMP
Scanner lamp (DSPF)
LED
Radiates light onto a document for the CCD to scan the document
image.
image.
SLUM
Document feed tray lift motor (DSPF)
Stepping motor
Lifts the document feed tray.
SPFC
Paper feed clutch (DSPF)
Electromagnetic clutch
Turns ON/OFF the document feed section roller.
SPFFAN
DSPF cooling fan
DC brushless motor
Cools the motors and the clutches in the DSPF section.
SPFM
Transport motor (DSPF)
Stepping motor
Drives the transport roller.
SPOM
Document exit motor (DSPF)
Stepping motor
Drives the document exit roller.
SPUM
Document feed/transport motor (DSPF)
Stepping motor
Drives the paper feed roller and the transport roller.
SRRC
No. 2 registration roller clutch (DSPF)
Electromagnetic clutch
Turns ON/OFF the No. 2 registration roller.
STRC
Transport roller clutch (DSPF)
Electromagnetic clutch
Turns ON/OFF the transport roller 1.
STRRC
No. 1 registration roller clutch (DSPF)
Electromagnetic clutch
Turns ON/OFF the No. 1 registration roller.
No.
Name
Function/Operation
1
Control PWB (DSPF)
Controls the image data process and all the DSPF.
2
Driver PWB (DSPF)
Drives the motors and the clutches in the DSPF section.
3
CCD PWB (DSPF)
Scans document images and performs A/D conversion of the scanning signal.
Signal name
Name
Type
Function/Operation
SPOM
SPUM
SPUM
SPOM
SLUM
SLUM
SPFC
SPFC
STRRC
STRRC
STRC
STRC
SRRC
SRRC
DSPF COPY LUMP
DSPF_COPY_LAMP
SPFFAN
SPFFAN
SPFM
SPFM
1
2
3
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 7
4. Connectors
No.
Name
function/Operation
1
USB connector (A type)
Supports USB 2.0 (Hi-Speed). This is used to connect a USB device such as USB memory to the machine.
2
USB connector (B type)
Supports USB 2.0 (Hi-Speed). A computer can be connected to this connector to use the machine as a printer. For the
USB cable, use a shielded cable.
USB cable, use a shielded cable.
3
LAN connector
Connect the LAN cable to this connector when the machine is used on a network. For the LAN cable, use a shielded type
cable.
cable.
4
Service-only connector
This connector is for use only by service technicians. Connecting a cable to this connector may cause the machine to
malfunction. Important note for service technicians: The cable connected to the service connector must be less than 118"
(3 m) in length.
malfunction. Important note for service technicians: The cable connected to the service connector must be less than 118"
(3 m) in length.
5
Power plug
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 8
5. Operation panel
NOTE: Fingers and static electricity pen can be used to operate the touch panel and keys on thepanel.
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.
When a key is touched, a beep sounds and the selected item is highlighted. This provides confirmation as you
perform an operation.
2
[HOME Screen] button / indicator
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.
quick and easy operation of the machine.
3
Main power indicator
This lights up when the machine's main power switch is in the "on" position.
4
[POWER] button
Use this key to turn the machine power on and off.
5
[POWER SAVE] button /
indicator
indicator
Use this key to put the machine into auto power shut-off mode to save energy. The [POWER SAVE] key blinks when
the machine is in auto power shut-off mode.
the machine is in auto power shut-off mode.
6
USB connector (A type)
Supports USB 2.0 (Hi-Speed). This is used to connect a USB device such as USB memory to the machine.
7
Fiery Key
Touch this key to use Fiery Server Function.
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 9
6. Sensors and detectors
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