Sharp Mx 2300n Service Manual

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 4
D. Connectors
No. Name Function/ Operation Note
1 USB connector (Type A) Used to connect a USB hub or USB memory. 
2 USB connector (Type B) Used to connect a computer to use this machine as a printer. 
3 LAN connector Used to connect a LAN cable to use this machine in a network. 
1
2
3
Service-only connector 

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 5
E. Operation panel
No. Name Function/ Operation Note
1 Touch panel A message or a key is displayed on the LCD screen. Touch the 
displayed key with your finger to perform various operations. When the 
displayed key is touched, a sound is generated and the selected item is 
highlighted to confirm.
2 Mode select key/Lamp Used to switch the display mode of the touch panel. The lamp of the 
selected key is lighted. 
• [Document Filing] key
Press...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 6
F. Print and send status (Job status)
No. Name Function/ Operation Note
1 Paper empty display Supply paper. If the status display indicates “Paper empty,” the specified size paper is 
empty. In this case, if paper is not supplied, the output is reserved and the job data in 
standby state which can be outputted are outputted in priority. (When, however, paper is 
exhausted during outputting, the priority output of another job data is not...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 7
G. Sensors
Signal name Name Function/Operation Type NOTE
1TUD_CL Transfer belt separation CL detection Detects the transfer belt separation CL.
1TUD_K Transfer belt separation BK detection Detects the transfer belt separation BK.
APPD1 ADU transport path detection 1  Detects the duplex (ADU) upstream paper  pass. Transmission type
APPD2 ADU transport path detection 2 Detects the duplex (ADU) midstream paper pass. Transmission type
CLUD1 Tray 1...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 8
H. Switches
MPFD Manual feed paper entry detection  Detects the manual feed paper entry. Transmission type
MPLD Manual feed paper length detector  Detects the manual paper feed tray paper length.  Manual paper 
feed unit
MPWD Manual paper feed tray paper width 
detectorDetects the manual paper feed tray paper width.  Volume resistor
MTOP1 Manual paper feed tray pull-out position 
detector 1Detects the manual paper feed tray paper pull-out...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 9
I. Clutches and solenoids
Signal name Name Type Function/Operation Note
1TURC Primary transfer separation clutch  Electromagnetic clutch Controls the primary transfer separation 
mode. 
CPFC Tray vertical transport clutch  Electromagnetic clutch Controls ON/OFF of the paper transport 
roller in the paper feed tray section. 
CPUC1 Paper feed clutch (Paper feed tray 1) Electromagnetic clutch Controls ON/OFF of the roller in the 
paper feed tray...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 10
J. Drive motors
Signal name Name Type Function/Operation Note
ADUM_L ADU motor lower Stepping motor Drives the right door section. 
CLUM1 Paper tray lift-up motor (Paper 
feed tray 1)DC brush-less motor Drives the lift plate of the paper feed tray. 
CLUM2 Paper tray lift-up motor (Paper 
feed tray 2)DC brush-less motor Drives the lift plate of the paper feed tray.
CPFM Paper feed motor Brush-less motor Drives the paper feed section. 
DM_CL...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 11
K. Lamps
Signal name Name Type Function/Operation Note
CCFT LCD backlight CCFT cool cathode ray tube Backlight for the CCD
CLI Scanner lamp Xenon lamp Radiates lights onto a document for the CCD to scan 
document images.
DL_C Discharge lamp C LED Discharges electric charges on the OPC drum.
DL_K Discharge lamp K LED Discharges electric charges on the OPC drum.
DL_M Discharge lamp M LED Discharges electric charges on the OPC drum.
DL_Y...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 12
L. Fans and filters
Signal name Name Function/Operation Note
CPUFM Controller cooling fan motor Cools the controller PWB. 
HDDFM HDD cooling fan motor Cools the HDD.
OZFM Ozone fan motor Exhausts ozone. 
POFM_F Paper exit cooling fan motor (F side) Cools the fusing unit. 
POFM_R Paper exit cooling fan motor (R side) Cools the fusing unit. 
PSFM Power cooling fan motor Cools the power unit. 
No. Name Function/Operation Note
1 Ozone filter...

MX-2300/2700 N/G  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 – 13
M. PWB
No. Name Function/Operation Note
1 RD I/F PWB Detects the sensors in the right door unit. 
2 Tray 1 detection PWB Detects the tray 1.
3 Tray 2 detection PWB  Detects the tray 2.
4 DC power PWB Outputs the secondary side voltage.
5 Driver main PWB Drives the transport motor and related sections. 
6 MC PWB Generates the high voltage for the main charger and the developing bias voltage. 
7 Primary transfer PWB Generates the primary...