General Circuit Diagram
General Circuit Diagram (1/2)
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
F
E
D
C
B
A
F
E
D
C
B
A
SGND
+24VD
+3.3VB
OPTCSTSNS
OPTSDA
OPTSCL
OPTCL
+24VD
+24VD
REFEEDCL
+24VD
FULLSNS
GND
MAINTH
SGND
OPTCL
OPTCL
PICKSL
+24VD
OPTCSTSNS
+24VD
+3.3VB
OPTSDA
OPTSCL
SGND
OPTCSTSNS
OPTCL
+3.3VB
OPTSDA
OPTSCL
MAINTH
FSROUTSNS
NFCS
+3.3VB
SGND
+3.3VB(V)
SGND(BR)
+3.3VB(GY)
FSROUTSNS(GN)
NFCS(BL)
PLEVELSNS(GN)
+3.3VB(V)
SGND(BR)
PATHSNS(W)
SGND(GN)
PGND
PGND
/BLMACC
/BLMDEC
BLMFG
+24VD
+24VD
+24VD
SGND
+3.3VA
RLYD_LVT
AC-H
AC-N
+3.3VB(Y)
SGND(BR)
CSTPSNS(GN)
+3.3VB(BR)
LIFTMT(W)
PMOUTA
/PMOUTA
/PMOUTB
PMOUTB
PGND
LVPSFANON
LVPSFANLOCK
DUPSWBKSL
FSRD
FREQSNS
AC-N
AC-H
+24VD(BR)
CSTSNS(BL)
SGND(BL)
CSTPSNS(W)
GNDS(GN)
CSTPSNS
MPTSL
+3.3VH
+24VD
+24VD
PGND24
+24VA
+24VA
PGND24
UL1061#22(BL)
UL1061#22(R)
UL1061#22(R)
UL1061#22(BL)
PGND5
PGND5
PGND5
+5VC
+5VC
+5VC
+3.3VH(R)
+3.3VH(V)
MAINFANON
GNDP
MAINFANLOCK
MPTPSNS(W)
GNDS(GN)
TNR
MPTPSNS
PRIDCPWM
PRIACPWM
DEVACCLK
TRNCLK
TRCRNT
DEVACPWM
DEVDCSNS
PRIACCLK
SGND
24VAON
+3.3VA
+5VA
5VCON
+5V/
+3.
3V_S
PSW
COILB
COILA
VIN(R)
+24VB
VSS(W)
SGND
TGSDATA
MAINFANON
MAINFANLOCK
TRPCLK
/TGOFF
24VCON
AIRTEMP
TGRDATA
TRPWM
PWRSW
SGND
PWRSAVE1
INHIBIT
24VEON
J201
+24VA
+24VBSNS
+24VA
SGND
/VDO1
LDCTRL2
LDCTRL1
LDCTRL0
+3.3VB
VD02
SGND
/BDI
/LDPWM
SGND
/VD02
SGND
VDO1
SGN
D
(GN
)
PR
ER
EGSN
S(W
)
+3.
3VB(BK)
SGN
D
R
EAR
SN
S
T
OPSN
S(GN
)
SGN
D
(W
)
+3.
3VB(Y)
C
ST
PLVLSN
S(W
)
SGN
D
(GN
)
+3.
3VB(PK)
PW
SN
SAN
D
(GN
)
+3.
3VB(W
)
SGN
D
(R
)
T
OPSN
S(GY)
R
EF
EED
SN
S(V)
LI
F
T
ER
MT
(W
)
SGN
D
(V)
C
ST
SN
S(V)
+24VD
(R
)
C
ST
SL
+24VD
SGN
D
SGN
D
SGN
D
+3.
3VA
/VD
O1
EN
GT
YPE
VC
R
ESET
W
AKEVC
W
AKEEN
G
C
LEI
C
LEO
/BD
O
SGN
D
EN
GT
YPE
VD
O1
/VD
O2
VD
O2
PGND
+24VD
/SCNDEC
/SCNACC
1
2
3
4
5
6
7
J6
0
4
J6
0
4
DH
1
2
3
4
5
6
7
1
2
3
4
5
6
7
J6
1
1
2
1
C
L
J6
6
3
J6
0
2
L
H
1
2
3
4
5
6
7
J6
0
2
L
1
2
J1
5
4
1
2
3
4
5
6
7
1
2
1
2
3
4
5
6
7
1
2
3
4
5
6
1
2
3
4
5
6
2
1
J4
0
7
1
2
1
2
J6
5
1
D
J6
5
1
D
H
1
2
J6
5
1
L
1
2
SL
1
2
J6
5
0
2
1
C
L
1
2
J6
2
0
J6
1
0
1
2
J6
2
1
J6
0
2
D
H
1
2
3
4
5
6
7
7
6
5
3
2
1
4
M
J1
5
3
1
2
3
4
5
6
7
J6
0
2
D
J152
1
2
3
4
5
J406
J405
J4205
J4204
J4203
J4202
J4201
2
1
FU2
2
1
FU1
EN
D
2
J4601
J4602
J4603
J4321
J4322
1
2
3
J6
2
4
1
2
3
J6
2
3
J7
1
2
1
2
3
4
1
2
3
4
M
J1
4
6
1
2
3
4
5
J1
7
1
1
2
3
4
5
6
1
2
3
4
5
6
J1
3
2
J2
1
6
J202
J203
J204
3
2
1
SOLD71
2
1
J2
9
0
2
1
J2
9
1
TSH1
1
2
TP
I
N
L
1
EN
D
1
MT1
MT2
2
1
J2
9
3
2
1
2
1
M
SOLD4401
J4323
J4611
J4612
J4613
1
2
3
J6
2
5
1
2
J6
2
2
J6
6
1
D
H
J6
6
1
D
1
2
3
J6
6
1
L
J7
1
1
1
2
SL
3
2
1
1
2
3
J1
4
7
1
2
J1
4
1
1
2
3
2
3
1
J2
1
1
J206
J205
J201
SOLD70
2
1
SOLD4400
SOLD6121
SOLD6122
J4011
J4012
1
2
J6
1
2
1
2
3
J3
7
4
1
2
SL
23
24
1
2
J1
4
3
2
1
2
3
4
1
J1
3
5
J246
J254
J251
J243
J253
J252
J248
J247
J245
J244
J780
2
1
J4033
J4032
J4013
J4031
3
2
1
1
2
3
J3
7
5
1
2
3
J3
7
2
2
4
J3
4
1
13
14
15
16
17
18
19
20
21
22
2
4
J1
3
3
13
12
11
10
9
8
7
6
5
3
4
1
2
3
4
5
6
7
8
12
11
10
9
8
2
3
4
5
6
1
7
J1
3
1
J2
4
1
1 2 3
2
1
1
2
J7
7
7
FT1
1
2
J3
7
6
J344
4
3
5
6
7
8
9
10
11
12
23
22
21
20
19
18
17
16
15
14
1
2
3
J808
3
4
5
6
1
2
17
1
2
3
J807
J2802
FT2
J343
1
2
10
11
12
13
14
5
24
3
2
4
1
1
2
J860
2
1
J4
1
1
3
J4
1
1
1
J4
1
1
2
J4
0
2
2
J4
0
2
1
J4
0
2
3
J4
1
2
1
J4
1
2
2
J4
1
2
3
J7
0
1
4
J7
0
1
5
J7
0
1
3
J7
0
1
2
J7
0
1
1
1
2
3
J700
2
1
2 1
M
SOLD4500
SOLD4201
J660DH
1 2
J660L
1
2
J660D
SOLD4202
1 2
SL
SOLD4501
1
7
16
1
5
14
13
1
2
11
10
9
8
7
6
5
3
2
4
1
1
2
3
4
M
1
4
1
4
3
5
6
7
8
9
2
1
4
J1
6
1
14
13
12
11
10
9
8
7
6
1 2
1 2 3
1 2 3
1 2 3 4 5
1 2
1 2 3 4
17
1
4
2
3
5
6
7
8
9
10
11
1
2
13
1
4
1
5
16
1
7
1
2
3
4
J8
0
2
1
2
3
4
J1
6
2
J159
J157
J156
J151
J158
J144
J163
UN6
M3
Laser Scanner
Motor
24V Interlock Switch
SW2
High Voltage
Power Supply PCB
Fixing
Power Supply PCB
Low Voltage
Power Supply PCB
Main Controller PCB
DC Controller PCB
Sub Fan
FM2
Duplex Reverse
Solenoid
SL3
Multi-purpose Tray
Pickup Solenoid
SL2
Main Fan
FM1
Pickup
Motor
M2
Main
Motor
M1
Duplex Re-pickup
Clutch
CL2
Delivery Tray
Full Sensor
PS4
Multi-purpose Tray
Paper Sensor
PS3
Fixing Delivery
Sensor
PS13
Thermistor
TH1
Fixing Heater
H1
Power Switch
SW1
Lifter Motor
M4
Cassette
Pickup Solenoid
SL1
Cassette
Detection
Switch
SW4
Rear Cover
Switch
SW5
Paper Width
Sensor
PS21
TOP Sensor
PS2
Pre-registration
Sensor
PS1
1
Cassette Paper
Surface Sensor
PS1
2
Duplex
Feed
Sensor
PS22
Thermoswitch
TP1
Cassette Paper
Sensor
PS1
Laser Scanner Driver PCB
Memory
UN5
UN2
Multi-purpose Tray
Paper Sensor PCB
UN3
Cassette Paper
Sensor PCB
UN4
SW3
Cassette Detection Switch
M5
Lifter Motor
Cassette Paper
Sensor
PS461
Cassette Paper
Sensor PCB
UN28
PS432
PS460
Paper Feeder
Feed Sensor
Cassette Paper
Surface Sensor
Paper Feeder
Feed Sensor PCB
UN29
SL6
Cassette Pickup
Solenoid
CL1
Feed Clutch
UN1
UN7
Pre-registration
Sensor PCB
UN8
Cassette Paper
Surface Sensor PCB
UN9
TOP Sensor
PCB
UN10
Paper Width/Duplex
Feed Sensor PCB
UN13
UN11
Power Switch PCB
UN12
UN14
Delivery Tray Full Sensor PCB
UN15
Fixing Delivery Sensor PCB
UN16
Paper Feeder
Driver PCB
UN31
Cassette Paper
Surface Sensor
UN30
Laser Scanner Unit
To Option Paper Feeder
Option Paper Feeder
General Circuit Diagram
237
Summary of Contents for imageCLASS LBP325dn
Page 11: ...Safety Precautions Laser 2 Power Supply Lithium Battery 3 Toner Safety 3 Notes on works 4...
Page 15: ...Product Overview 1 Product Lineup 6 Features 7 Specifications 8 Parts Name 11...
Page 141: ...5 Remove the Right Cover Unit 5 Parts Replacement and Cleaning 131...
Page 187: ...Adjustment 6 Actions at Parts Replacement 178...
Page 204: ...Error Jam Alarm 8 Overview 195 Error Code 197 Jam code 205 Alarm Code 208...
Page 219: ...Service Mode 9 Overview 210 Service Mode 214...
Page 243: ...Installation 10 Installation of the host machine 234...