
General Circuit Diagram
A
4
3
2
C
B
D
E
F
A
C
B
D
E
F
7
6
5
1
4
3
2
7
8
8
6
5
1
OPTPS
DRMMFG
SGND
/DEVMACC
/DEVMDEC
DEVMFG
DRMMREV
/DRMMDEC
/DRMMACC
/FSRMACC
FSRMREV
/FSRMDEC
FSRMFG
PGND
+24V
A
DRMMREV
DRMMFG
/DRMMACC
/DRMMDEC
+24V
A
+24V
A
PGND
PGND
+24V
A
+24V
A
PGND
PGND
/DEVMACC
/DEVMDEC
DEVMFG
PGND
F
ANPWM
MPTCLCH
+24V
A
CSTPKSL
+24V
A
F
ANLCK
REGIPHB
REGIPHBNO
FEEDMBNO
FEEDMB
FEEDMANO
FEEDMA
MPTPKSL
+24V
A
REGIPHANO
REGIPHA
REGIMI0
FANPWM
CSTPKSL
FANLK
FSRMFG
/FSRMDEC
/FSRMACC
FSRMREV
MPTPKSL
MPTCLCH
OPTPKSL
+24V
A
OPTPKSL
+24V
A
OPTPS
PGND
to OPTION FEEDER
FEEDMI2
FEEDMI1
FEEDMB
FEEDMA
FEEDMI0
REGIMI3
REGIMI1
REGIMI2
REGIMB
REGIMA
DUPF
ANON
PGND
+24V
A
DUPSWBKCL
PGND
DUPF
ANON
DUPSWBKSL
DUPF
ANLK
DUPF
ANLCK
DUPSWBKCL
DUPSWBKSL
+24V
A
N
H
FEEDMI3
PGND
24VD
P_GND
+24V
H
N
H
N
120V
+3LED
SGND
POUTS
+3LED
SGND
LOOPS
SGND
+3LED
FSRPRSS
PFULLS
SGND
+3LED
GND
/MANUAL_RST
DCC_ON
+24S_ON
GND
+24V
GND
GND
+3.3V
+3.3V
1
2
TRIP_DET
+5V
PGND(HVT)
+24V
PSREM24V
RLD+
RLD-
FSRD
+24V(HVT)
PGND
+24V
PGND
230V
+3.3VOFF
SWOFF
SGND
SGND
+3.3V
+3.3V
ZEROX
SUBTH
SGND
SGND
MAINTH
LOOPS
FSRPRSS
POUTS
+3LED
PFULLS
SGND
SGND
SUB2TH
PGND
/SCNDEC
+24V
A
/SCNACC
3.3V
ENVSDA
SGND
ENVSCL
DEVSL
+24V
A
TAG4
INLET
(2
3
0
V)
(1
2
0
V)
MF728Cdw
/724Cdw
MF727Cdw
/726Cdw
/725Cdn
TAG1
TAG2
TAG3
R
W
R
W
R
+24V(HVT)
+24V(HVT)
PGND(HVT)
PGND(HVT)
HVOUTEN
HVDALD
HVDA
T
A1
HVDACLK
W
SGND
/TGEN1
TGRD
TGSD
ICLRSNS
TR2S
TR1S
TNR4
TNR3
TNR2
TNR1
DEVCLK
TR2PWM
TR2CLK
ICLBSNS
PEXPON123
/TGEN4
/TGEN3
/TGEN2
PEXPON4
/DOPEN
+3.3V
SGND
GND4A
+3.3V4A
VDO4
/VDO4
CNT41
CNT40
+3.3V3A
GND3A
+3.3V1A
CNT30
CNT31
/VDO3
GND2A
+3.3V2A
CNT20
CNT21
/VDO2
GND1A
VDO1
/VDO1
VDO2
VDO3
CNT10
CNT1
1
/BDI
VSS4
VIN
VIN
VSS2
VIN
VSS1
VIN
VSS3
M
M
1
2
3
4
5
6
7
8
J2002
1
2
3
4
5
6
J2001
M
1
2
3
4
5
6
7
8
J2003
3 2 1
CL
SL
1
2
3
4
J2005
1
2
3
4
J2004
SL
M
M
2
1
4
3
5
6
7
8
9
9
8
7
6
5
4
3
2
1
2
1
J210
1
2
3
4
5
6
7
8
J211
1
2
3
4
5
6
J205
1
2
3
4
5
6
7
J204
1
2
3
J206
1
2
J208
1
2
J207
1
2
3
4
J213
1
2
3
4
J203
1
2
J209
1
2
3
4
J202
3
1
J2
0
1
10
11
12
13
14
15
16
17
18
19
20
20
19
18
17
16
15
14
13
12
11
10
2
1
J704
CL
J4004DA
7
J4004D
4
1
2
3
5
6
7
30
21
22
23
24
25
26
27
28
29
30
28
29
27
26
25
24
23
22
21
1
2
3
4
5
6
J701
1
2
3
J705
SL
1
2
J703
3
1
2
J6002
2
3
1
J3
0
1
SOLD4
SOLD6
SOLD3
MT301
J3
8
4
J3
8
5
J3
8
2
J3
8
1
J3
8
1
B
1
J311
2
1
J312
J3
8
2
B
2
3
1
J651
1
2
J653
J654
1
2
3
31
31
J140
31
3 2 1
1
2
3
4
5
6
J152
1
2
3
4
5
6
7
J383
2
1
J4003F
2
1
FU1A
1
2
3
J3014
SUBRLD
SGND
+24V
1
2
3
J156
1
2
3
J3013
1
2
3
J3012
1
2
3
J4018
3
4
5
6
1
2
J351
1
2
3
4
J352
J3
6
4
J3
6
3
1
2
3
4
5
6
7
1
2
J1391LB
J3
93
B
1
2
J1391L
2
1
J388
2
3
1
J386
J387
1
2
3
4
5
6
7
J361
10
9
8
2
3
4
5
6
1
7
2
3
1
J386B
2
1
J4003MB
2
1
J4003MA
J362
2
1
2
1
J1
3
0
1
B
2
1
FU1B
TB2B
TB1B
2
1
J1
3
0
1
A
2
1
TB2A
TB1A
1
2
1
2
1
2
9
8
2
3
4
5
6
1
7
J707
2
3
1
J709
J706
J710
1
2
3
A1
B3
2
1
2
3
1
2
1
J3
92
SOLD8
SOLD7
J4001DH
J4001D
J4001L
1
2
3
4
2
3
4
1
1
2
3
4
5
6
1
2
J708
1
2
3
4
J915
3
4
5
6
1
2
J914
1
2
3
J929
17 16 15 14 13 12 11 10 9
8
2
3
4
5
6
1
7
J151
31
J133
1
2
3
4
J132
10
9
8
2
3
4
5
6
1
7
J150
25
J131
1
2
J157
1
2
3
4
J153
1
2
J154
J14
J13
J12
J11
S48
S46
S45
S44
S43
S42
S41
S47
1
2
3
4
5
6
7
8
24
26
28
1
4
2
3
5
6
7
8
9
23
25
27
29
30
31
9
1
1
12
13
31
10
1
1
12
13
14
15
16
17
18
19
20
21
22
23
10
14
15
16
17
18
19
20
21
22
1
1
2
3
4
24
25
26
27
28
29
30
31
2
3
4
5
6
7
8
8
7
6
5
3
2
1
4
25
24
23
22
21
20
19
18
25
22
21
20
19
18
17
16
15
14
13
12
1
1
10
9
17
16
15
14
13
12
1
1
10
9
8
7
6
5
4
1
2
3
4
J3015
25
24
23
3
2
1
1
2
SL
J1002
J1001
M
J2007
J501
/VDO4
VDO4
SGND
N.C.
ENGON
N.C.
/BDO
SGND
/T
OP
SC
SCLK
/CCR
T
/VDOEN
VDO3
SGND
SGND
SGND
/VDO2
VDO2
/VDO3
SGND
VDO1
/VDO1
+5V_USB
GND
H_DM
H_DP
GND
GND
N.C
VDD
DA
T
A0
DA
T
A3
CMD
LINK
N.C
CLK
GND
DA
T
A1
GND
RESET
DA
T
A2
VDD
N.C
GND
LAN_TXN
LAN_TXP
GND
UDEV_HSDP
UDEV_HSDM
USBD_VBUS
GND
NC
LAN_RXN
GND
GND
LAN_RXP
LED_CATH
LED_ANODE
SDIN
/RESET
LED_ANODE
LED_CATH
/INT_T
OUCH
GND
PNL_L
VDS_DT_P
PNL_L
VDS_DT_N
LCD_CLK
LCD_DOUT
LCD_DIN
LCD_CS
GND
+3.3V_LCD
+24V
GND
+3.3V_LCD
GND
CSIO_SEL
/RST_P
ANEL
/RST_LCD
P
ANEL_TX0
P
ANEL_RX0
P
ANEL_RX1
P
ANEL_TX1
PNL_L
VDS_CLK_P
PNL_L
VDS_CLK_N
GND
+3.3V
GND
GND
GND
CISMODE
CISOUT
O
GND
CISOUT1
GND
CISOUT2
R_CTHD
G_CTHD
B_CTHD
+12_LED
CISCLK
CISSP
VREF
+3.3_AFEA
GND
Y
/SCS
SCLK
SDOUT
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
WH
PK
Y
Y
Y
DATA7
DISP_ENB
HSYNC
VSYNC
DCLK
SHUT
+3.3V_D
+3.3V_D
+3.3V_A
+3.3V_A
GND
SDA
SCL
/INT
GND
+3.3V
GND
DP
DM
VBUS
GND
YP
XN
YN
XP
23
J130
9
10
1
1
12
13
14
15
16
17
18
19
20
21
22
23
1
4
2
3
5
6
7
8
21
20
19
18
17
16
15
14
13
12
1
1
10
9
23
J912
23
22
8
7
6
5
3
2
1
4
17
J910
2
3
4
5
1
J908
4
J909
4
1
2
3
1
2
8
J911
4
3
5
6
7
8
24
28
26
20
18
16
1
2
3
4
5
6
7
8
9
10
11
13
15
17
19
21
23
25
27
12
14
22
J924
MT21
1
2
3
4
5
6
7
8
9
10
11
13
15
12
14
J901
12
1
1
10
9
8
7
6
5
3
2
1
4
17
16
15
14
13
SOLD1
1
4
1
2
3
5
6
6
5
3
2
1
4
MT42
MT22
17
4
1
2
3
5
6
7
8
9
10
1
1
12
13
14
15
16
17
3
2
1
4
4
J9091
2
1
8
7
6
5
3
4
8
J9111
7
8
9
10
11
12
13
14
15
16
17
17
16
15
14
13
12
11
10
9
8
7
24
28
26
20
18
16
1
2
3
4
5
6
7
8
9
10
11
13
15
17
19
21
23
25
27
12
14
22
J1005
SOLD12
18
19
20
21
22
23
24
25
26
27
2
8
J9531
2
8
J953
27
26
25
24
23
22
21
20
19
18
J951
FT41
1
2
3
4
5
1
2
3
4
5
J961
1
2
3
4
5
6
7
8
9
10
11
13
15
12
14
J409
4
J9710
4
1
2
3
4
J971
4
1
2
3
3
4
5
6
1
2
J972
3
2
1
4
28
4
1
2
3
4
28
J954
J956
UN3
High Voltage
Power Supply PCB
M7
Laser Scanner
Motor
PCB28
Environment
Sensor
SL3
Developing
Separation
Solenoid
FM2
Duplex
Feeding Fan
SL5
Duplex Reversal
Solenoid
CL2
Duplex Feeding
Clutch
UN10
Duplex Driver PCB
UN1
DC Controller PCB
UN9
Low Voltage Sub PCB
SW1
Main
Power
Switch
SW1
Main
Power
Switch
UN8
Low Voltage Main PCB
UN2
Driver PCB
M3
Registration
Motor
UN15
USB Host PCB
UN14
Control Panel NFC PCB
UN20
NFC PCB
UN13
Main Controller PCB
UN12
CIS
UN23
Wireless LAN PCB
M5
Pickup
Motor
M2
Developing
Motor
M1
Drum Motor
M4
Fixing Motor
SL1
MP Tray
Pickup
Solenoid
SL2
Cassette
Pickup
Solenoid
CL1
MP Tray
Feeding
Clutch
FM1
Fixing
/Fixing
Power Supply
Cooling Fan
SR15
Delivery Full
Sensor
SR10
Fixing Loop
Sensor
SR9
Fixing
Pressure
Release
Sensor
SR8
Fixing Delivery
Sensor
TH803
Sub
Thermistor 2
TH802
Sub
Thermistor 1
TH801
Main
Thermistor
H220
Fixing
heater
H120
Fixing
heater
UN6
Fixing Relay PCB
UN7
Fixing Sub PCB
SGND
+3LED
+3LED
ITBTS
MPTPS
SGND
+3LED
SGND
FDOORS
+3LED
DEVHPS
SGND
CSTPS
MPTPREGS
+3LED
OPTPREGS
REGS
FDOORS
DEVHPS
PREGS
CSTPS
PREGS
+3LED
+3LED
SGND
SGND
RSSR
ITBLS
+24V
A
SGND
+3.3V
SGND
RBLSGAIN0
RBLSGAIN1
ITBLLED
RSLED
+3LED
OPTPREGS
SGND
RDSLED
RDSGAIN1
RDSGAIN0
RDSSR
RDSDR
MPTPS
ITBTS
RBLSGAIN1
SGND
+24V
A
RBLSGAIN0
ITBLS
MPTPREGS
+3LED
+3LED
SGND
SGND
+24V
A
+3.3V
SGND
+3.3V
RSLED
ITBLLED
RSSR
RDSLED
RDSGAIN1
RDSGAIN0
REGS
RDSSR
RDSDR
1
2
3
1
2
3
J3009
1
2
3
J4017L
J4017DH
1
2
3
4
5
6
J166
1
2
3
4
5
6
7
J167
1
2
3
J4017D
1
2
3
J3005
1
2
3
J3001
J3006
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
2
3
4
5
6
J165
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
1
2
3
J3004
1
2
3
J3003
25
J141
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9
8
1
2
3
J164
25
J160
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
2
3
J3002
J3010
7
6
5
3
2
1
4
17
16
15
14
13
12
11
10
9
8
2
3
4
5
6
1
7
1
2
3
1
2
3
4
4
1
2
3
5
6
7
9
8
2
3
4
5
6
1
7
J611
J3011
J161
J162
1
2
3
J163
1
2
3
1
2
3
4
5
6
7
8
J601
SR4
Registration
Detection
Sensor
UN5
Relay PCB
PCB29
Patch
Sensor
SR1
Paper Feeder
Pre-Registration
Detection Sensor
SR12
Pre-registration
Detection Sensor
SR13
Cassette Paper
Detection Sensor
SR6
Developing
Homeposition
Sensor
SR2
Front Cover
Sensor
SR16
ITB Pressure
Release Sensor
SR14
MP Tray Paper
Detection Sensor
PCB30
Patch
Registration
Sensor
SR7
MP Tray
Pre-Registration
Detection Sensor
UN4
Laser Driver PCB
Laser Scanner Unit
Duplex Reversing Drive Unit
Fixing Assembly
Fixing Film Unit
USB-Memory
LINE
J943
TEL
CT
J944
J945
J2001
/RST_F
AX
/INT_MODEM
/MODEM_CI2
/MODEM_CI1
GND
GND
/MODEM_CTS
/MODEM_R
TS
MODEM_TX
MODEM_RX
MODEM_ESC
VDD
VDD
/MODEM_DCD
GND
HRL
/HOOK
MONI_OUT
GND
+24V
GND
2
1
SOLD10
19
J941
J942
J2009
2
1
2
3
1
2
1
SOLD9
19
18
17
16
15
14
13
12
1
1
10
9
8
7
6
5
3
2
1
4
2
1
J922
19
J918
4
1
2
3
5
6
7
8
9
10
1
1
12
13
14
15
16
17
18
19
1
2
3
4
5
6
J9211
UN17
Off Hook PCB
UN16
FAX-NCU PCB
SP1
Speaker
MF728Cdw/727Cdw
/726Cdw/725Cdn
MF728Cdw/727Cdw
/726Cdw/724Cdw
MF727Cdw
/726Cdw
/BOOK_B
+3.3V
GND
HPS
BOOK_A
/BOOK_A
BOOK_B
ADF_*B
ADF_*A
ADF_A
ADF_B
GND
DS
DES
+3.3V
GND
+3.3V
1
2
3
J1404
1
2
3
4
M
3
2
1
2
3
4
1
J1305
MT32
4
3
2
1
M
1
2
3
1
2
3
J1312
3
2
1
3
2
1
J1302
1
2
3
4
J1310L
1
2
SL
2
1
J1003L
J1402DH
2
3
4
1
J1402L
1
2
3
4
J1402D
1
2
3
J1401L
1
2
3
J1401D
J1401DH
J1310DH
1
2
3
4
J1310D
J1003DH
1
2
J1003D
1
2
3
4
5
6
7
J904L
10
9
8
2
3
4
5
6
1
7
MT31
J903L
1
2
3
J902L
SL4
ADF Pickup
Solenoid
PS703
Document
Sensor
PS702
Document
End Sensor
PS701
CIS Unit
Homeposition
Sensor
M720
Reader Motor
M721
ADF Motor
Reader Unit
Control Panel Unit
ADF Unit
PC
TTP
RD Unit
LCD
General Circuit Diagram
316
Содержание MF720 Series
Страница 1: ...Revision 2 0 MF720 Series Service Manual...
Страница 12: ...Product Overview 1 Product Lineups 5 Product Features 7 Specifications 8 Name of Parts 14...
Страница 33: ...How to release Jam Remove the jammed paper and open close the ADF upper cover 2 Technical Explanation 25...
Страница 79: ...4 Click Import Export Import 1 2 2 Technical Explanation 71...
Страница 101: ...Periodical Service 3 Periodically Replaced Parts 94 Durable Parts 95 Periodical Services 96 Cleaning 97...
Страница 102: ...Periodically Replaced Parts No periodically replaced parts is set for this product 3 Periodical Service 94...
Страница 103: ...Durable Parts No durable parts is set for this product 3 Periodical Service 95...
Страница 104: ...Periodical Services No periodical service is set for this product 3 Periodical Service 96...
Страница 232: ...Adjustment 5 Overview 225 Adjustment at Parts Replacement 226...
Страница 248: ...Troubleshooting 6 Test Print 241 Trouble shooting items 243 Version Upgrade 244 Debug Log 248...
Страница 258: ...Error Jam Alarm 7 Outline 251 Error Codes 252 Jam Code 257...
Страница 267: ...Service Mode 8 Overview 260 COPIER 264 FEEDER 300 FAX 302 TESTMODE 308...
Страница 322: ...APPENDICES Service Tools 315 General Circuit Diagram 316 Print Sequence 317 Backup Data 318...