463
SEP 2004
Ver. 1.2
DP-1520P/1820P/1820E
10 Schematic Diagram
10.1. General Circuit Diagram
3
1
2
DUPLEX EJECT
SENSOR
CN145
3
1
2
4
1
2
3
4
5
6
7
8
9
10
11
12
13
CN726
LCD
PNL3
PNL1
CN220
CN52
CN657
M
LSU
MOTOR
CN12
1
2
5
6
7
8
9
10
11
12
13
14
15
CN655
3
4
1
2
5
6
7
8
9
10
11
12
13
14
15
16
16
3
4
CN230
1
2
5
6
7
8
9
10
11
12
13
14
3
4
CN250
PNL2
CN223
1
2
5
6
7
8
9
10
11
12
3
4
CN51
CN11
1
2
3
4
5
6
7
CN721
1
2
3
DUPLEX
SOLENOID
CN719
1
2
3
1
2
3
1
2
3
4
5
CN712
1
2
3
CN709
CN701
CN723
CN715
CN706
1
2
3
1
2
3
LSU
1
2
3
REGISTRATION
ROLLER
CLUTCH
PAPER FEED
CLUTCH
BYPASS FEED
SOLENOID
CN73
CCD
CN1
INV
CN650
CN21
CN22
CN26
CN25
CN24
CN28
CN30
CN29
ADF
CN771
CN770
CN707
CN774
CN773
CN775
CN776
CN777
CN778
CN772
CN807
CN800
CN805
CN804
CN806
CN802
CN801
CN803
CN808
CN770
CN771
CST2
CST3
CST2
RLB
1st TRAY
LIFT MOTOR
HOME
POSITION
SENSOR
SCANNING
MOTOR
SCANNING
LAMP
RELEASE LEVER
PLATE SOLENOID
REVERSING GUIDE 1
SOLENOID
STAMP
SOLENOID
CN57
CN1
2nd TRAY
LIFT MOTOR
INTERMEDIATE
ROLLER CLUTCH
PAPER FEED
CLUTCH
3rd TRAY
DRIVE MOTOR
3rd TRAY
LIFT MOTOR
PAPER FEED
CLUTCH
INTERMEDIATE
ROLLER CLUTCH
CN775
CN776
CN777
CN778
4th TRAY
LIFT MOTOR
CN774
13
14
15
CN500
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
+3.3V
L5V
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
+24VM
SPC
8
9
10
11
12
13
14
15
16
17
18
19
CN720
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN717
CN53
18
19
20
21
22
1
2
3
4
5
6
7
8
9
10
11
12
13
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
G5
G6
1
1
PS
CN703
CN702
SPEAKER
to PNL1
FXB
EXT. TEL
LINE
MJR
CN391
CN21
CN20
CN25
1
7
CN390
1
2
79
80
1
7
CN393
pSPKOT
GND
1
2
1
2
2
3
4
5
6
2
3
4
5
6
1
3
1
3
+5VP
GND
+24V
pCMLD
nHKOF
nCTON
AGND
L2
L1
1
2
79
80
CN80
CN392
CN22
17
1
CN810
1
HDD
CNSHD1
CNHD1
F
3
4
2
1
CN141
CN142
5
DC12
1
2
3
4
5
6
7
8
CN143
CN59
HDD 40P
CN171
1
SC
25
26
KEY
COUNTER
1
1
1
14
6
2
10
12
2
INVERTING
ROLLER
CLUTCH
1
4
9
6
10
2
7
ADF ROLLER
CLUTCH
1
4
FEED 2 ROLLER
CLUTCH
1
4
2
2
2
2
2
1
2
3
3
3
4
4
3
3
4
4
4
5
5
5
5
5
2
1
3
6
ADF
MOTOR
1
2
3
4
5
6
6
6
6
2
1
7
7
7
8
8
8
9
9
10
2
3
4
5
6
1
2
3
4
5
6
7
1
2
3
4
5
6
2
2
3
4
5
1
1
3
CN221
1
2
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
4
5
4
5
6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
3
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
4
4
4
2
3
2
5
5
5
3
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
4
4
5
6
4
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
6
2
2
3
4
5
6
7
8
9
10
11
12
13
25
26
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
8
9
10
11
1
2
3
4
5
6
7
3
8
1
2
2
3
4
5
6
7
8
9
1
2
3
1
2
3
4
5
6
7
8
2
3
4
5
6
1
2
3
REAR FAN
REGISTRATION
SENSOR
3rd TRAY
DETECTION
SENSOR
JAM COVER
SENSOR
NO PAPER
SENSOR
UPPER LIMIT
SENSOR
UPPER LIMIT
SENSOR
UPPER LIMIT
SENSOR
NO PAPER
SENSOR
REGISTRATION
SENSOR
4th TRAY
DETECTION
SENSOR
JAM COVER
SENSOR
NO PAPER
SENSOR
REGISTRATION
SENSOR
2nd TRAY
DETECTION
SENSOR
JAM COVER
SENSOR
DUPLEX
SENSOR
1
2
3
READ POINT
SENSOR
UPPER
LIMIT
SENSOR
NO PAPER
SENSOR
REGISTRATION
ROLLER
SENSOR
TONER
DENSITY
SENSOR
1
2
3
ORIGINAL
LENGTH
SENSOR 2
1
2
3
ORIGINAL
LENGTH
SENSOR 1
3
1
2
ADF COVER
OPEN DETECTION
SENSOR
3
1
2
ADF EXIT COVER
SENSOR
3
1
2
EJECT
SENSOR
PAPER EXIT
SENSOR
THERMISTOR
(TMIS)
S/H
HSYNC
GND
LDEN
GND
RETRACE
POWCNTV
PMCK
PMRDY
PMON
MGND
LIFT1
+24VM
+24VM
+24VM
PFCLCNT
RRCLCNT
HFSOL
PCHK1
GND
LDPSEN
GND
LDUPLSEN
UPLIMIT
CASET
LDCSTSEN
GND
RSEN
LDRRSEN
GND
nDUXSOL
+24VM
ILS
SWITCH
LED
CN708
1
3
MGND
+5V
GND
OP3FLT
OP3RST
OP3FOT
OP3FCK
OP3FLD
OP3ENB
OP3CLK
OP3FDIN
ADF2
MRCLH2
LIFT2
PCHK2
CST2
UPLIMIT2
FDPCHK2
JAMDOR2
CSTOP
MGND
WTS
1
3
2
7
20
4
5
+24VM
nCTCNT
OUTA
+24V
IOUTA
OUTB
IOUTB
+24V
+24VOPF
nCCLH2
+24VOPF
nCCLH1
nCCLH3
+24VOPF
nAEJC
GND
+5v
GND
GND
GND
GND
GND
GND
GND
+5v
+5v
+5v
+5v
+5v
nAB2SN
nAREV
nAOAC
nAB1SN
nAADL1
nAADL2
+5v
+5v
nAA3S
nAB4S
+24VOPF
nASTAMP
+24VOPC
+24VOPF
+24VOPC
nAPACHG
HVAC1
HVAC2
nAKEEP2
nAKEEP1
nAPICR
CN41
4
1
2
3
SNS
1
2
3
4
1
2
3
4
1
2
3
4
5
1
2
3
4
5
6
7
8
MGND
+24VM
GND
+5V
GND
OP3RST
OP3FLT
OP3FCK
OP3FDT
OP3ENB
OP3FLD
OP3FDIN
PCHK2
GND
LDPHK2
UPLMT2
GND
GND
GND
LDUPL2
FDPCHK2
LDFPCHK2
nCST2
LDCST2
GND
JAMDOR2
LDJAM2
LIFTM2
ADF2
MRCLH2
ADF3
MRCLH3
nLIFTM3
PCHK3
GND
GND
GND
GND
GND
LDPHK3
UPLIMIT3
LDUPL3
JAMDOR3
LDJAM3
CST3
LDCST3
FDPCHK3
LDFPCHK3
PCHK4
GND
GND
GND
GND
GND
LDPHK4
UPLMT4
LDUPL4
FDPCHK4
LDFPCHK4
CST4
LDCST4
JAMDOR4
LDJAM4
LIFTM4
N.C.
P/S
LD
2
1
2
CN727
1
2
3
CN728
1
2
3
CN811
2
3
4
5
MGND
+5V
GND
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
ADF4
MRCLH4
LIFT4
PCHK4
CST4
UPLIMIT4
FDPCHK4
JAMDOR4
CSTOP4
MGND
MAIN MOTOR
1st TRAY
DETECTION
SENSOR
1
3
2
4
TOTAL
COUNTER
WASTE
TONER
SENSOR
HUMIDITY
SENSOR
SSN
1
2
3
GND
LDI+
LDI-
CN55
1
2
3
4
5
1
2
3
4
5
6
7
8
1
2
3
4
CN2
CN3
7
8
4
+24V
+24V
+24V
MGND
MGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
17
15
1
2
5
6
7
8
9
10
11
12
13
14
3
4
15
16
16
17
17
18
18
2
3
4
5
6
7
8
9
10
11
12
CN61
1
LAN I/F
USB I/F
2
3
4
5
6
7
8
CN66
1
CN62
FRM
CN63
FRM
CN64
SORT
MEMORY
CN65
FROM
CARD
CN67
CN68
CN69
HARDWARE
KEY I/F
CN2
1
5
MGND
CN50
CN74
CN75
SLOT 1
SLOT 2
1
2
3
4
1
2
3
4
1
2
BYPASS FEED
SENSOR
BYPASS FEED
NO PAPER
SENSOR
1
2
3
1
2
3
4
5
1
2
1
2
1
2
CN773
INTERMEDIATE
ROLLER CLUTCH
PAPER FEED
CLUTCH
+24VM
+24VM
1
2
3
4
5
ADF4
MRCLH4
1
2
1
2
1
2
1
2
1
2
1
2
13
12
14
15
16
11
4
5
BA
+24VM
MGND
24
23
22
21
CN850
CN172
2
1
2
1
2
1
MCCDHT
2
1
CCDHT
CN772
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
DUPLEX 2 GUIDE
SOLENOID
OUTA
+24V
nOUTA
OUTB
+24V
nOUTB
1
2
4
3
1
17
5
9
2
18
1
8
12
10
16
15
13
14
4
11
6
3
7
24
22
23
28
21
26
25
27
20
29
30
19
VDD
VCL
VSS
CSB1
RESETB
E_RDB
RW_WRB
RS
DB0
DB1
DB2
DB3
DB7
DB6
DB4
DB5
V1
V2
V3
V4
V0
VOUT
C4+
C3+
C1-
C1+
C2+
C2-
PS
HPMB
CN231
1
2
5
6
7
8
9
10
3
4
CN251
1
2
5
6
7
8
9
10
11
11
12
12
3
4
LED0
KIN7
LED1
LED2
LED3
LED4
LED5
KIN6
SCN0
SCN1
KIN5
KIN4
KIN3
KIN2
LEDCT2
LEDCT3
LEDCT4
BAT+
+SLP
nLEDSLP
GND
LEDCT0
BZ+
LEDCT1
BZ-
LED6
SCN2
KIN0
KIN1
nSLPKY
CN233
1
2
5
6
7
8
9
10
11
12
13
14
3
4
CN253
15
1
2
5
6
7
8
9
10
11
12
13
14
3
4
15
16
16
17
17
18
18
CN232
1
2
5
6
7
8
9
10
3
4
CN252
1
2
5
6
7
8
9
10
3
4
CN27
1
3
2
1
3
2
ORIGINAL
DETECTION
SENSOR
GND
+5v
nAAPNT
SCN4
SCN5
SCN3
SCN6
KIN3
KIN2
KIN7
KIN1
KIN0
N.C.
LED9
KIN6
LEDCT0
+DAT
+ALM
+ACT
KIN4
KIN5
nLEDACT
nLEDALM
nLEDDAT
LEDCT1
LEDCT2
LEDCT3
LEDCT4
LED8
LED7
N.C.
PNL4
CN234
CN235
1
2
5
6
7
8
9
10
11
12
13
14
3
4
CN280
1
2
5
6
7
8
9
10
11
12
13
14
3
4
KIN4
KIN5
KIN6
KIN3
KIN7
KIN2
KIN0
KIN1
SCN11
SCN10
SCN8
SCN9
nOPT
GND
+24V
GND
GND
GND
+5VP
+5V
PNLRXD
PNLTXD
nSLPKY
nLPOW1
nLPOW2
nWAKE
nPNLRST
nVCNT
7
15
19
20
2
13
7
8
14
5
16
5
6
3
12
10
9
1
6
10
2
17
1
18
16
20
11
17
4
11
9
14
13
8
4
15
18
3
12
19
GND
nPHY1
pPHY2
AGND
pPHY1
AGND
FSH
AGND
VOUT1
nPHYR
+12V
pPHYR
nPHYCP
AGND
+5V
pPHYCP
AGND
nPHY2
VOUT2
GND
nDUPACK
nSCNWUP
nPVSYNC
SPCRXD
nPRGDWN
nDUREQ
nATT
pSENTIM
pVREQ
nPACK
pSPCRST
SPCTXD
IICSCL
nSREQ
nVRDY
GND
GND
IICSDA
GND
nSACK
nPRDY
pBDA
1
2
5
6
7
8
9
10
11
12
3
4
13
14
15
GND
GND
GND
GND
GND
GND
+24V
+5V
+5VP
+5VD
+3.3V
+3.3V
nLPOW1
nLPOW2
nVCNT
+5VP
MGND
GND
+24V
nAAPNT
nAB4SN
nAA3SN
nAADL1
nAADL2
nAB2SN
nAB1SN
nAEJC
nAREV
nAOAC
nAKEEP1
nAKEEP2
nAPACHG
nAPICR
nSTAMP
nACLH1
nACLH2
nACLH3
nACLOCKAD1
pADATA1A
pADATA1B
+24V
GND
+24V
GND
DAA1
MGND
MGND
nASTROAD1
nSADFON
nDADFON
+24V
MGND
+5V
+5V
N.C.
+24V
+24V
MGND
MGND
nFLON
CN656
1
2
3
4
5
SNS
nBDOOR
GND
LDORI
nANG
GND
+5VP
nORI
+24VM
KCNT
GND
KCDET
+5V
CCNT
1
2
3
4
1
2
3
4
CN10
THERM1
THERM2
nHEXSEN
GND
LDHEX
+24VFL
MGND
nFNRDT
1
2
PCL
+24VM
TDREF
TDSEN
GND
GND
+24VM
ELPCNT
GND
nWTBSEN
nTFSEN
LDWTB
LDTF
GND
+5V
HUMISN
TEMPSN
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
+24VM
+5V
nMMRDY
MGND
nMMON
MGND
nMMCK
+24VM
GND
F/R
CN42
LDSSN
nA3SEN
nB4SEN
nA5SEN
GND
nPEDSEN
nDUPSEN
GND
LDPED
LDDUX
GND
nHFPESEN
GND
LDHFPE
nOPDUP
GND
1
1
2
3
4
5
6
7
CN722
8
9
10
1
2
1
2
3
TONER BOTTLE
HOME POSITION
SENSOR
1
2
TONER MOTOR
TONER BOTTLE
MOTOR
LDBTHP
GND
BTHP
BMCNT
SMCNT
+24VM
+24VM
+5VP
+5V
+5V
GND
GND
SSR
ZCRS
GND
ACSW
+24VD1
+24VD1
+24VM
CPWM
N.C.
DDCPWM
TPWM
MGND
+24V
nFNRDTP
MGND
GPWM
CCRMT
TC
10
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
11
12
1
22
14
15
16
17
18
19
20
21
13
1
2
3
3
1
2
PS/LSU
FAN
THERMAL FUSE
FUSER LAMP
FUSER UNIT
THERMOSTAT
THERMISTOR
To SPC
(CN721)
CN5
CN2
1
2
CN4
1
CN501
T401
1
CN502
1
CN504
2
1
2
1
AC(L)
AC(N)
AC(N)
AC(L)
2
4
3
1
2
1
2
1
CN3
2
1
CN1
L
E
N
INLET
POWER CORD
AC SW
E
Black
White
3
2
1
AC(L)
AC(L)
AC(N)
AC(N)
AC(N)
AC(L)
CN173
2
1
2
1
2
1
CST4HT
2
1
LSUHT
2
1
CST2HT
2
1
2
1
CST3HT
2
1
2
1
AC SW
COIL
CH48TA
1
2
2
1
1
5
CN6
COIL
CH35TA
CN256
1
2
5
6
3
4
CN256
1
2
5
6
3
4
PNL3-4
CN254
1
2
3
4
CN254
1
2
3
4
PNL3-3
PROCESS
UNIT
C
D
T
TRANSFER
G
M
M
M
CN710
1
14
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
ORIGINAL SIZE
SENSOR 1
ORIGINAL SIZE
SENSOR 2
+5V
VINA
LEDA
GND
VOUTA
GND
LEDB
LEDC
LEDX
LEDY
LEDZ
+5V
VINX
VOUTX
*1
*1
*2
3
4
2
1
CN394
1
2
3
4
GND
pSPENB
pBZCLK5
nBZH1GH5
1
2
3
4
to FXB
GND
pSPENB
pBZCLK5
nBZH1GH5
M
M
M
M
M
M
*1
*1
FAX (Option)
HDD (Option)
Dehumidifier Heater (Option)
Keyboard
(Option)
1
2
3
4
PARTS WITH A MARK ON THIS SCHEMATIC
DIAGRAM INCORPORATE SPECIAL FEATURES
IMPORTANT FOR SAFETY.
WHEN SERVICING, IT IS ESSENTIAL THAT ONLY
MANUFACTURER'S SPECIFIED PARTS ARE USED FOR
THE CRITICAL COMPONENTS IN THE PARTS
IDENTIFIED WITH A MARK IN THE SCHEMATIC.
*1: Japan Specification Only
*2: Europe Specification Only
IMPORTANT SAFETY NOTICE
Drawing Name
General Circuit
Diagram
Model
DP-1520P/
1820P/1820E
Summary of Contents for Workio DP-1520P
Page 98: ...98 SEP 2004 Ver 1 2 DP 1520P 1820P 1820E DETAIL A 28 35 31 32 33 34 30 29 ...
Page 464: ...464 SEP 2004 Ver 1 2 DP 1520P 1820P 1820E memo ...
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