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 this key to switch to the document filing mode in order to store 
a document to the hard disk in the form of a image or to print or send 
the image stored in the hard disk.
• [FAX/Image send] key ([Image send] key for the models without the 
FAX function)
Press this key to switch to the FAX mode/network scanner in order to 
use the FAX function or the scanner function. 
• Communicating lamp
This lamp is lighted during sending or receiving in the FAX mode, and 
lighted during sending in the scanner mode.
• Data lamp
This lamp flashes when FAX data cannot be outputted due to paper 
empty, etc. If there is data which has not been sent, the lamp is 
lighted. 
• [COPY] key
Press this key to switch to the copy mode in order to use the copy 
function. When this key is pressed continuously, the total copy 
quantity and the toner remaining quantity can be checked. 
3 Printer lamp (Ready lamp/Data lamp) • Ready lamp
When this lamp is lighted, print data can be received. 
• Data lamp
This lamp flashes during reception of print data, and lights up during 
printing. 
4 Numeric key (10-key) Used to enter the copy quantity or the FAX number, etc. 
5 [C] key Used to clear the set value of copy quantity, etc. to “0.”
6 [Job status] key Press this key to display the job status. On the job status screen, the 
details of the job can be checked and the job can be terminated.
7 [System setting] key When this key is pressed, the system setting menu screen is displayed 
to allow the paper feed tray setting, destination registration, and other 
setting for easy operations of this machine. 
8 [Logout/Tone] key ([Logout] key for the 
models without the FAX function)Used to logout after user authentication. Used to deliver the tone signal 
in the dial line when the FAX function is used. 
9 [Program] key Used to use the job program when the copy function is used, and to dial 
when the FAX function is used. 
10 [CA] key Press this key to reset the operation, cancel setting, and start from the 
initial state. 
11 [STOP] key Used to stop copying and scanning a document. 
12 [BLACK START] key Used to scan a document in black. 
13 [COLOR START] key Used to make a color copy in the copy mode and to scan a document in 
colors. When the FAX or the internet FAX is used, this key cannot be 
used. 
14 [Power save] key/Lamp Used to set the machine to the auto power shut off mode of power 
saving. [Power save] key flashes in the auto power shut off mode. 
15 [Power] key Turns ON/OFF the power of the machine. 
Used in the FAX nighttime mode when the FAX is installed.
16 Main power lamp This lamp lights up when the main power switch of the machine is ON. 
DOCUMENT
FILING
IMAGE SEND
COPYJOB STATUSSYSTEM
SETTINGS
LOGOUT
PRINT
READY
DATA
LINE
DATA
7689
34521
10121113141516 
						

							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 made.)
To select another paper size for outputting because the specified size paper cannot be 
supplied immediately, touch the key of the job in the job list and touch “8. [DETAIL] key,” 
and the paper size specification can be changed.
2 Job list • The list of jobs reserved, during execution, or completed is displayed. When [PRINT] key 
is touched with the mode select key, the display of the job status screen select key is 
changed over to display the list of “SPOOL”. The list indicates the jog outline and the 
status.
• When a print job during spooling or an encrypted PDF is directly printed, the job is 
displayed on the “SPOOL” screen. If there is a list of encrypted PDF files, touch the job 
key and enter the password, and the selected job is shifted to the list of [Reserve/
Executing], and the job enters the standby state. 
3 Job status screen select key The job list display is switched to one of “SPOOL” job, “JOB QUEUE” job, or “COMPLETE” 
job.
“SPOOL”: When an encrypted PDF is printed directly, the print job list is displayed. Can be 
displayed when the print job is displayed.
“JOB QUEUE”: The job list which is reserved or executing is displayed.
“COMPLETE”: The job list which completed is displayed. 
4 Mode select key Used to select the print mode, the scanner mode, the Fax mode, or the internet FAX mode.
• [PRINT JOB] key displays the list of copy, printer, Fax receive, internet Fax receive, and 
the self print.
• [SCANNER] key displays the send list of the scanner function.
• [FAX JOB] key displays the send list of the Fax and the PC-Fax functions.
• [INTERNET FAX] key displays the send list of the internet Fax and the PC-Internet Fax 
function.
5[↓] [↑] keys Selects the page of the displayed job list. 
6 [STOP/DELETE] key Used to stop or delete the job which is executing or to delete a selected or reserved job. 
However, the FAX receive print jog and the internet Fax receive print job cannot be stopped 
or deleted.
7 [PRIORITY] key When a job is selected in the reserved jobs displayed in the job list of “JOB QUEUE” screen 
and the key is touched, the job reservation priority is changed to the top priority.
For a print job, select a priority job and touch this key, and the previous copying or printing 
is interrupted and the selected job copy or print is started. After completion of the selected 
job, the interrupted job is resumed from the interrupted point.
8 [DETAIL] key Used to display the details of the selected job. When the automatic temporal save of the 
document filing function or filing is executed, or when sequential broadcasting send is 
executed with the FAX/image send function, the key display is made in the complete job 
status screen. When this key is touched, the details of the completed jobs are displayed 
and reprint or resend of the job can be executed by touching [CALL] key. 
9 [CALL] key When the displayed key is touched on the complete job status screen and [CALL] key is 
touched, the operation (reprint or resend) of the touched job is executed. Same as when 
[DETAIL] key is touched and [CALL] key is touched. 
JOB QUEUESETS / PROGRESSSTATUS
DETAIL
PRIORITY
STOP/DELETE
INTERNET-FAXFAX JOBSCANNERPRINT JOB

SPOOL
COMPLETEJOB QUEUECOPY020 / 001COPYING
COPY020 / 000PAPER EMPTY
BBB BBB020 / 000WAITING
0312345678002 / 000WAITING
DETAIL
CALL
INTERNET-FAX
SPOOL
COMPLETEJOB QUEUE
21
6978
3
45
Complete job
status screen 
						

							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 upper limit detection (Lift HP 
detection)Detects tray 1 upper limit. Transmission type
CLUD2 Tray 2 upper limit detection (Lift HP 
detection)Detects tray 2 upper limit. Transmission type
CPED1 Tray 1 paper empty detection  Detects tray 1 paper empty. Transmission type
CPED2 Tray 2 paper empty detection Detects tray 2 paper empty. Transmission type
CPFD1 Tray 1 transport detection (Paper entry 
detection)Detects tray 1 paper pass. Transmission type
CPFD2 Tray 2 transport detection (Paper entry 
detection)Detects tray 2 paper pass. Transmission type
CSPD1 Tray 1 paper remaining quantity detection  Detects tray 1 paper remaining quantity.
CSPD2 Tray 2 paper remaining quantity detection Detects tray 2 paper remaining quantity.
CSS1 Tray 1 installation detection Detects the tray 1.
CSS2 Tray 2 installation detection Detects the tray 2.
DHPD_CL CL phase detection Detects the CL phase.
DHPD_K BK phase detection  Detects the BK phase.
DSW_ADU ADU transport open/close detection Detects the duplex (ADU) cover open/close. Transmission type
DSW_C Tray 1 and 2 transport cover open/close 
detectionDetects the tray 1 and 2 transport cover open/close.
HOPS Shifter home position detection  Detects the shifter home position.
MHPS Scanner home position sensor Detects the scanner home position. Transmission type
MPED Manual feed paper empty detection Detects the manual feed paper empty. Transmission type
OCSW
CSPD2 CSPD1 CLUD2
HOPSPOD2
CPED2CSS2CSS1CLUD1TFD2CPED1
MPLDTH_M/HUD_MDHPD_CL
TCS_MTCS_C
TCS_K
1TUD_K
1TUD_CL
DHPD_KCPFD1
PPD1PPD2
POD1
MTOP2
REGS_F/RPCS_CL/K
MTOP1 MPWD
MPED
APPD2MPFD POD3
DSW_ADUAPPD1
TCS_Y
CPFD2
DSW_C
TFD3 MHPS 
						

							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 
position (storing position).  Transmission type Manual paper 
feed unit
MTOP2 Manual paper feed tray pull-out position 
detector 1Detects the manual paper feed tray paper pull-out 
position (pull-out position).  Transmission type Manual paper 
feed unit
OCSW Original cover SW Document size detection trigger. Transmission type
PCS_CL/K Process control sensor Detects the toner patch density. Reflection type
POD1 Fusing after-detection Detects the paper exit from fusing. Transmission type
POD2 Paper exit detection Detects the paper from paper exit. Transmission type
POD3 Right tray paper exit detection Detects the paper exit to right tray.
PPD1 Registration pre-detection Detects the paper in front of resist roller. Transmission type
PPD2 Registration detection  Detects the paper in rear of resist roller.
REGS_F/R Resist sensor Detects the resist shift. Reflection type
TCS_C Toner density sensor Detects the toner density (C). Magnetic sensor
TCS_K Toner density sensor Detects the toner density (K). Magnetic sensor
TCS_M Toner density sensor Detects the toner density (M). Magnetic sensor
TCS_Y Toner density sensor Detects the toner density (Y). Magnetic sensor
TFD2 Paper exit full detection Detects the face down paper exit tray full Transmission type
TFD3 Right tray paper exit full detection Detects the right tray paper exit full.
TH_M/HUD_M Temperature/humidity detection  Detects the temperature/humidity.
Signal name Name Type Function/Operation Note
1TNFD Waste toner full detection switch Mechanical switch Detects the waste toner full. 
DHSW 
(Japan only)Dehumidifier heater switch Seesaw switch  Turns ON/OFF the power lone of the dehumidifier heaters 
provided in the scanner (reading) section and the paper 
feed section. 
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 motor and the LSU laser.
DSW-R Right door open/close switch Micro switch Detects open/close of the right door, and turns ON/OFF 
the power line of the fusing motor and the LSU laser.
MSW Main SW Seesaw switch Turns ON/OFF the main DC power source. 
PWRSW Operation panel power switch Push switch Outputs the ON/OF control signal of the DC power source. Signal name Name Function/Operation Type NOTE
PWRSW
DSW-R
DSW-F MSW
1TNFD
DHSW 
						

							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 1 section. 
CPUC2 Paper feed clutch (Paper feed tray 2) Electromagnetic clutch Controls ON/OFF of the roller in the 
paper feed tray 2 section.
LSUSS1 LSU shutter solenoid Electromagnetic solenoid Opens/closes the LSU shutter.
MPFS Paper pickup solenoid (Manual paper 
feed)Electromagnetic solenoid Paper pickup solenoid (Manual paper 
feed)
MPGS Manual paper feed gate solenoid Electromagnetic solenoid Controls open/close of the manual paper 
feed gate solenoid. 
MPUC Manual paper feed clutch Electromagnetic clutch Controls ON/OFF of the manual paper 
feed roller in the manual paper feed 
section. 
PCSS Process control shutter solenoid Electromagnetic solenoid Opens/closes the shutter of the process 
control and the registration sensor. 
1TURC
LSUSS1
PCSS
MPUC
CPUC1
CPFC
CPUC2 MPGS
MPFS 
						

							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 Drum motor (CL) Stepping motor Drives the color OPC drum unit. 
DM_K Drum motor (K) Stepping motor Drives the black OPC drum unit. 
DVM_CL Developing drive motor (CL) Brush-less motor Drives the developing section (CL). 
DVM_K Developing drive motor (K) Brush-less motor Drives the developing section/transfer section (K).
FUM Fusing drive motor Stepping motor Drives the fusing unit. 
MIM Scanner motor Stepping motor Drives the scanner (reading) section. 
OSM Shifter motor Stepping motor Performs offset of paper. 
PFM PS front motor Stepping motor Drives transport between the resist roller and the paper feed 
section, transport between the resist roller and the right door 
section.
PGM Polygon motor DC brushless motor Scans the laser beam
POM Paper exit drive motor Stepping motor Drives the paper exit roller. 
RRM Registration motor Stepping motor Drives the resist roller and controls ON/OFF. 
TNM_C Toner motor C Synchronous motor Transports toner from the toner cartridge to the developing unit.
TNM_K Toner motor K Synchronous motor Transports toner from the toner cartridge to the developing unit. 
TNM_M Toner motor M Synchronous motor Transports toner from the toner cartridge to the developing unit.
TNM_Y Toner motor Y Synchronous motor Transports toner from the toner cartridge to the developing unit.
WTNM Waste toner drive motor Synchronous motor Stirs waste toner. 
OSM
WTNMPGM
TNM_Y
TNM_M
TNM_C
DVM_CL
DM_CL
DM_K
PFM
CPFM RRM MIM
CLUM1
CLUM2POM
FUM
TNM_K
DVM_K
ADUM_L 
						

							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 Discharge lamp Y LED Discharges electric charges on the OPC drum.
HL_LM Heater lamp lower main Heats the lower heat roller. (Main)
HL_UM Heater lamp upper main Heats the upper heat roller. (Main)
HL_US Heater lamp upper sub Heats the upper heat roller. (Sub)
CLI
HL_UMCCFT
HL_US
HL_LM
DL_Y
DL_M
DL_C
DL_K 
						

							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 Absorbs ozone generated in the image process section. 
2 Toner filter Prevents dispersing of toner.
3Paper exit filter
HDDFM
2
3
CPUFM POFM_FPOFM_R
PSFM
OZFM
1
1
: December 15 20051 
						

							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 transfer voltage. 
8 AC power PWB Controls the primary side power source. 
9 Scanner control PWB Controls the scanner section. 
10 CCD PWB Scans the document images. 
11 Phase detection PWB Adjusts the BL/CL drum phase. 
12 CL inverter PWB Drives the xenon lamp. 
13 Document detection light receiving PWB Outputs the document size detection signal. 
14 Document detection light emitting PWB Emits the document size detection LED lights. 
15 LCD INV PWB Generates the high voltage for the LCD backlight.
16 LVDS PWB Converts the display signal and outputs to the LCD. 
17 MFP OPE-P PWB Outputs the key operation signal. 
18 Power SW PWB Outputs the ON/OFF control signal of the DC power source. 
19 HL PWB Controls the heater lamp. 
20 Driver sub PWB Drives the process motor and related sections. 
21 Secondary transfer PWB Generates the secondary transfer voltage and the transfer belt cleaning voltage. 
22 Temperature/humidity sensor PWB Detects the ambient temperature and humidity. 
23 Manual paper feed width detection PWB Detects the manual paper feed tray paper width. 
24 MFPcnt PWB Controls images and the whole machine. 
25 Mother PWB Interfaces the MFPcnt PWB and other PWB. 
26 PCU PWB Controls the engine section. 
27 PCU Flash ROM PWB Controls the PCU PWB. 
28 BD PWB Detects laser and outputs the synchronous signal. 
29 LSU CNT PWB Controls the LSU. 
30 LSU thermistor Measures the temperature in the LSU. 
31 DL PWB Discharges electric charges on the OPC drum. 
32 DV initial PWB Detects the DV model.
33 LD PWB Controls laser lighting. 
DV
LSU
control box
10
21
23
221 13 18 17 15 16
12
14
9
37
19
20
8
24 2526 27 28 29 30 31 32
4
5 11
2
37
6
38
33
34
35
36