Sharp MX-2300N / MX-2700N / MX-2300G / MX-2700G / MX-2300FG / MX-2700FG (serv.man10) Service Manual ▷ View online
MX-2300/2700 N/G/FG BLOCK DIAGRAM / ブロック図 1 – 3
3. PCU PWB
IC1
CPU
H8S/2373
IC5
SRAM
(1Mbit)
FLASH
ROM
(16Mbit)
IC6
EEPROM
(64kbit)
IC9
PMC
ASIC
IC8
I/O
ASIC
IC7
DFF
LCX574
I2C
Bus
IC27/IC30/IC31/IC37
MUX
HC151x5
CLOCK
LCC
FINISHER
DESK
IC4
RESETIC
AnalogInput
Fuser
Thermistor
(TH_UM/LM/US)
Toner
Detector
(TCS_K/C/M/Y)
Process
Cont.
sensor
(PCS_K/CL)
Resist
sensor
(REGS_F/R)
To
LSU
Via
Mother
Optional
To
MFPC
Via
Mother
UART
UART
UART
UART
UART
DC
Power
Supply
X1
Xtal
19.6608MHz
IC2
Spread
Spectrum
Sensor
Input
PPD2
Sensor
Input
CPFD1
/
C
PFD2/
HPOS
/
P
PD1
/
DHPD_CL/DHPD_K
/
POD3
/
P
OD2
DSW_F
/DSW_R
/DSW_C/
CLUD1
/CLUD2
/
CSPD1
/
C
SPD2/
1TUD_K
/1TUD_CL
MUX
HC151
CRUM
CRUM_K/C/M/Y
IC71
D/A
C
onv
(TCS/REGS
cont)
Load
Control
O
utput
Coin
vendor
(Optional)
Stepping
M
otor
Control
Pout
Motor
(POM)
/
ADU
Motor
(ADML)
/
Shifter
Motor
(OSM)/
Resist
Motor
(RRM)
/
P
SF
Motor
(PFM)
Drum
Motor
BK(DM_K)/
Drum
Motor
CL(DM_CL)
Fuser
M
otor(FUM)
Fuser
unit
HL
control
HL_UM/LM/US
Sensor
Input
CSS11-14
/
C
SS21-24
POD1
APPD1
/
APPD2
Load
control
Output
MPGS
/CPUC1
/
CPUC2
/
PCSS
/
C
PFC
/
LSUSS1
/LSUSS2
(Optional)
/
MPUC
/
M
PFS
/
1TURC
FAN
Motor
Control
PS
FAN
(PSFM)
/
Ozone
F
AN
(OZFM)
/
Pout
FAN
(POFM_F/POFM_R)
Flash
Write
Protect
HV
MC
/
T
C
u
n
3-wireds
erial
Drum
L
amp
(DL_K/C/M/Y)
PWM
DC
Motor
C
ontrol
DV
Motor
B
K
(DVM_K)/
DV
Motor
CL
(DVM_CL)
Paper
Feed
Motor
(CPFM)
Sensor
Input
CSS1
/
C
PED2
/
C
SS2
/
CPED1
MPFD
/MPED
/CPWD11-12
TFD2/
1TNFD
/
WENDD
/
W
INID
Motor
L
ock
Detect
FAN_LD1-2
/
D
VMC_LD
/
D
VMB_LD
/
PFM_LD
/
F
UM_LD
Fuser
Thermistor
open
detect
THOPEN_UM/LM/US
Sensor
Input
DVSET
(K/C/M/Y)
DRDET
(K/C/M/Y)
IC73
Analog
MUX
Analog
Input
Temp/Hum
sensor
(TH_M/HUD_M)
LSU
T
hermistor
(TH1_LSU)
DV
detector
(DVTYP_C/M/Y/K)
Multi-bypass
tray
width
sensor
(MPWD)
FW
Sensor
Input
COIN
VENDOR
(Optional)
CV_CLCOPY
/
CV_COPY
Load
output
Mechanical
Counter
(Optional)
PNC_K
/
PNC_CL
Syncronous
Motor
Toner
Motor
(TNM_K/C/M/Y)
Waste
T
oner
M
otor(WTNM)
DC
Motor
Lift
Up
Motor
(CLUM1/CLUM2)
Sensor
Input
DSW_ADU/
TFD3
/
MPLD/
MTOP1/MTOP2/
MPED
MUX
HC151
RD
I/F
PWB
AddressBus[20:0]
DATABus[15:0]
I2C
B
us
MX-2300/2700 N/G/FG BLOCK DIAGRAM / ブロック図 1 – 4
4. SCANNER CONTROL PWB / スキャナコントロール PWB
SCNcntPWB
RSPF
Unit
RSPF
FEED
MOTOR
SCANNER
MOTOR
RSPF
RVS
MOTOR
PHOTO
SENSOR
CLUTCH
FlashROM
<Socket>
8Mbit
/CS0
(/CS0
R
ESERVE)
SDRAM
BUS
CCD
PCB
With
AFE&LVDS
LVDS
EEPROM
32Kbit
I2C
LAMP
UN
STMP
UN
RGB10bit*3
LVDS
Driver
4b
it
*2
LVDS
RGB8bit*3
RGB8bit*3
LVDS
LVDS
Driver
30bit
MHPS
LVDS
Receiver
4bit
*2
PANEL
PCB
CARD
READER
AUDITOR
OCSW
Original
detection
(Light
receiving)
Original
detection
(Light
emitting)
LCD
INVERTER
P
CB
LVDS
CPU
H8S/2373
XTAL
19.6608MHz
ADDRESS/DATA
BUS
SRAM
1Mbit
/CS2
SCAN
ASIC
/CS3
XTAL
28.795MHz
or
22.7425MHz
SDRAM
128Mbit
IO
ASIC
/CS5
SCN
IN
P
CB
(Option)
(DOCC
PCB)
Mother
PCB
(MFP
PCB)
<Engine/Controller>
LVDS
Driver
28bit
CPT
A
SIC
/CS4
LVDS
Receiver
30bit
MX-2300/2700 N/G/FG BLOCK DIAGRAM / ブロック図 1 – 5
5. SERIAL COMMUNICATION / シリアル通信
CPU
H8S/2373
TxD_DSK
RxD_DSK
T
xD_L
C
C
RxD
_
L
C
C
TxD_FIN
RxD_FIN
O.C.
O.C.
O.C.
O.C.
O.C.
O.C.
I/O
ASIC
µ
PD65892GC-
103
O.C.
O.C.
O.C.
O.C.
O.C.
O.C.
CPU
M30843FWGP
Schmit
Inv.
O.C.
O.C.
O.C.
O.C.
O.C.
CPU
H8/3684
CPU
H8/3687
DTR_FIN
DSR_FIN
DTR_DSK
DSR_DSK
DTR_LCC
DSR_LCC
PCU
FINISHER
(Optional)
DESK
(Optional)
LCC
(Optional)
Schmit
Inv.
O.C.
O.C.
O.C.
O.C.
O.C.
A[4:0]
D[15:8]
Schmit
Inv.
Schmit
Inv.
Schmit
Inv.
SCK_LSU
RSV_DAT
TRANS_DAT
Schmit
Inv.
Schmit
Inv.
Schmit
Inv.
LSU
A
SIC
O.C.
nPCU_RxD
Schmit
Inv.
nPCU_TxD
O.C.
PCU_DSR
Schmit
Inv.
PCU_DTR
Schmit
Inv.
O.C.
Schmit
Inv.
O.C.
MFPC
I/F
ASIC
O.C
O.C.
Schmit
Inv.
O.C.
nTxD_SCN
nRxD_SCN
RTS_SCN
CPU
H8S/2373
CPU
H8S/2373
Schmit
Inv.
Schmit
Inv.
O.C
Schmit
Inv.
CTS_SCN
Schmit
Inv.
TxD0
Schmit
Inv.
O.C.
O.C.
Schmit
Inv.
Schmit
Inv.
O.C.
O.C.
TxD_SCAN
RxD_SCAN
I/O
ASIC
µ
PD65892GC
O.C
O.C.
Schmit
Inv.
O.C.
DTR_FAX(D)
DSR_FAX(D)
DTR_FAX(CS)
Schmit
Inv.
Schmit
Inv.
O.C
Schmit
Inv.
DSR_FAX(CS)
P.D.
P.U.
P.D.
P.U.
P.D.
P.U.
P.U.
P.D.
P.D.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.U.
P.D.
P.D.
P.U.
P.U.
P.D.
P.U.
P.U.
P.U.
P.D.
P.D.
P.U.
P.D.
P.D.
P.U.
P.U
P.D.
P.U.
P.D.
P.U
P.D.
A[4:0]
D[15:8]
P.D.
P.U.
P.U.
P.D.
P.D.
P.U.
P.U.
P.D.
TxD_FAX(D)
RxD_FAX(D)
TxD_FAX(CS)
RxD_FAX(CS)
LVDS
RxD0
I/O
p
ort
I/O
p
ort
TxD1
RxD1
SCK1
TxD2
RxD2
TxD3
RxD3
TxD4
RxD4
RxD
TxD
SCK
RxD
TxD
I/O
I/O
RxD
TxD
I/O
I/O
RxD
TxD
I/O
I/O
R
x
D[1]
TxD[1]
CTS[1
]
RTS[1]
RxD
[2
]
TxD[2]
CTS[2
]
RTS[2
]
RxD[3]
TxD[3]
CTS[3
]
RTS[3
]
TxD[4]
RxD[4]
CTS[4
]
RTS[4
]
PIC
TxD[PIC]
RxD[PIC]
O.C.
Schmit
Inv.
P.U.
P.D.
nTxD_PIC
O.C
Schmit
Inv.
nRxD_PIC
P.U.
CLR[PIC]
O.C.
O.C
P.U.
CLR_PIC
REQ[PIC]
Schmit
Inv.
REQ_PIC
O.C
P.U.
LSU
DSPF
Cnt
(for
C-Jupiter)
SCN
Cnt
Mother
MFPC
FAX
(Option)
TxD
RxD
TxD
RxD
DSR_SCAN
DTR_SCAN
I/O
I/O
New
ASIC
TxD_FAX(D)+
TxD_FAX(D)-
RxD_FAX(D)+
RxD_FAX(D)-
TxD_FAX(CS)+
TxD_FAX(CS)-
RxD_FAX(CS)+
RxD_FAX(CS)-
RxD
TxD
CPU
SH7706
PIC
TxD
RxD
P.U.
DOCC
(Optional)
CPU
H8S/2320
O.C.
Schmit
Inv.
RxD
TxD
RxD
TxD
Schmit
Inv.
O.C
MX-2300/2700 N/G/FG BLOCK DIAGRAM / ブロック図 1 – 6
6. FAX
A. Except Japan
TE/LIU
connector
FAX
IMAGE
MEMORY
Not
install
FLASH
R
OM
16Mbit
LIU
P
WB
WORK
MEMORY
SDRAM
64Mbit
x
2
PROGRAM
FLASH
ROM
8Mb
x
2
FAX
MAIN
PWB
FLASH
R
OM
PWB
MJ1
(LINE)
MJ2
(TEL)
BT
relay
Exter
nally-
connected
hook
detection
circuit
Sr
e
la
y
Si3015
Si3021
Silicon
D
AA
Si3044
CHIP
SET
AFE_CLK
AFE_RES-
AFE_ASPCLK
AFE_ABITCLK
AFE_ARXD
AFE_ATXD
VOICE
CODEC
Si3000
Handset
(Japan
only)
AMP
Speaker
Microphone
MSG(Analog)
OFF
fook
d
etection
MR
relay
CI
detection
circuit
EC
relay
AFE_BSPCLK
AFE_BBITCLK
AFE_BRXD
AFE_BTXD
SPK(Analog)
RHS-
CI-
HS1-
HS2-
CION
150VON
48VON
HDMUTE-
Speaker
Speaker
circuit
Input
s
elect
Sound
volume
detection
BZ
EN_SPKON-
EN_BZON-
VOLA
VOLB
VOLC
SPMUTE-
NEW
A
SIC
MODEM
(MN195006E)
ECON
EXHKD-
MRON
SON1
SON2
PIC
microcomputer
(PIC16F627A)
CID-
RGDT-(CI
d
etection)
CPU
SH7706
UART
Download
MFP
IF
connector
FAX_TXD(D)+
FAX_TXD(D)-
FAX_RXD(D)+
FAX_RXD(D)-
FAX_CTS(D)-
FAX_RTS(D)-
RE
S_MFP-
FFVPP
MSW_MON-
WUP_FAX-
PLED
RES_FAX-
CNCT_FAX-
+12V
+3.3V
+5V2
16bit
32bit
32bit
16bit
16bit
32bit
+5V2
+5V2
E2PROM
(CAT24W02)
I2C
JTAG
debug
connector
JTAG
UART
Debug
connector
Oper
ation
in
1
W/7W
energy-sa
v
e
m
ode
FAX_TXD(CS)+
FAX_TXD(CS)-
FAX_RXD(CS)+
FAX_RXD(CS)-
FAX_CTS(CS)-
FAX_RTS(CS)-
VOLD
Spred
Spectrum
X’TAL
24.576MHz
Voltage
Regulator
1.9V
X’TAL
14.7456MHz
RESET
IC
(PST591IMT)
RESET-
+3.3V
EYE
pattern
connector
2bit
Handset
connector
Speaker
connector
POWER
LED
STATUS
LED
TELID
Voltage
level
DCDC
-150V
DCDC
48V
Po
la
ri
ty
re
v
e
rsal
detection
Pseudo-
ri
nger
Voice
m
essage
output
circuit
Click on the first or last page to see other MX-2300N / MX-2700N / MX-2300G / MX-2700G / MX-2300FG / MX-2700FG (serv.man10) service manuals if exist.