General Circuit Diagram (3/3)
A
C
B
D
E
F
A
C
B
D
E
F
4
3
2
7
6
5
1
8
G
N
D
Paper Feeder
STS
C
LK
C
MD
24V
A
O
PC
ST
G
N
D
24V
A
Paper Deck
C
LK
STS
C
MD
6 5 4 3 2 1
(500F)
5 4 3 2 1
5 4 3 2 1
J1701
(1500F)
N
.C
.
N
.C
.
N
.C
.
6 7
4
3
2
1
PO
PSC
LK
PO
PSIN
PO
PSO
U
T
G
N
D
5
24U
O
PC
ST
1
G
N
D
J80
3.3V
A
MD
0
IO
TR
XD
IO
TTXD
MD
2
6
2
3
4
5
GND
DOPSCLK
DOPSIN
DOPSOUT
24VA
5
4
3
2
1
1
2
3
4
5
OPSOUT
OPSIN
OPSCLK
24R
GND
2
4V
A
24V
A
G
N
D
G
N
D
D
U
P
AR
I
D
O
PSC
L
K
D
O
PSI
N
D
O
PSO
U
T
G
N
D
24V
A
Envelope Feeder
J90
2
1
3 4
6 5 4 3 2 1
3
2
1
FL_D
A
T
A
/R
ESET
FL
_MO
D
E
IO
T
R
XD
+3.
3
V
G
N
D
IO
T
TXD
1
2
3
J1504
FD
R
IVE
FLO
C
KO
G
N
D
FL_C
LK
4
5
6
PICKSNS
GND
PICKDR
4
C
MD
G
N
D
2
4R
D
U
P
AR
I
3
2
1
6
5
STS
C
L
K
7
5 6
1 2 3 4
J1500
4
1
2
3
4
1
2
3
PMO
U
T
A
PMO
U
T/
A
PMO
U
TB
PMO
U
T/
B
IMO
U
T
A
IMO
U
T/
A
IMO
U
TB
IMO
U
T/
B
8
1 2 3
R
EJI
SN
S
G
N
D
R
EJI
_
D
R
1
2
3
FUSNS
GND
FU_DR
Duplex Unit
1
2
3
4
J105LB
1
2
3
4
5
6
J1602
1
2
3
J105LA
J105L
1
2
3
J105DB
1
2
3
4
J105DA
J105D
1
2
3
4
J1000
1
2
3
4
5
J1001
1
2
3
4
5
6
7
J88
1
2
3
4
5
6
J80
J1
1
8
D
B
1
2
3
1
2
3
1
1
1
2
3
4
5
1
2
3
4
1
2
3
4
1
2
3
4
5
J1
1
8
D
J83
J1
1
8
D
A
1
2
3
4
5
6
J84
3
2
1
1
2
3
1
2
3
1
2
3
4
J124LA
1
2
3
4
J124DA
1
2
3
4
5
6
J124DB
J124LB
J124L
J124D
1
2
3
J1
5
2
4
1
2
3
4
5
6
3
2
1
J1501
J1503
1
2
3
4
J1506
1
2
3
4
1
2
3
J1505
1
2
3
J1
5
2
3
J1
5
0
2
3
2
1
J1520
1
2
3
4
1
2
3
4
J1521
1
2
3
4
M
1
2
3
4
M
1
2
3
J1522
3
2
1
J1803
J1855
J1854
J1856
FT1800
3
2
1
1
2
3
4
3
2
1
M
1
2
3
4
J1852
J1850
J1804
MT1800
1
2
3
J1800
2
3
4
1
J1802
2
3
1
4
M1501
Duplex
Reverse
Motor
PS1800
Envelope
Presence
Sensor
PS1802
Envelope
Multiple-feed
Sensor
M1800
Envelope
Pickup
Motor
M1502
Duplex
Re-pickup
Motor
PS1503
Side Registration Guide
Homeposition
Sensor
PS1501
Duplex
Face-up
Sensor
PS1502
Duplex
Re-pickup
Sensor
FM1501
Duplex Fan
UN2
DC Controller PCB
PF Driver PCB
PD Driver PCB
Envelope Feeder
Driver PCB
UN14
Duplex Driver PCB
General Circuit Diagram
180
Summary of Contents for LBP351 Series
Page 1: ...Revision 4 0 LBP351 352 Series Service Manual ...
Page 12: ...Product Overview 1 Product Lineups 6 Specification 7 List of Parts 11 ...
Page 140: ...3 Remove the Main Drive Unit 1 4 Screws 2 1 2 2 2 2 4x 5 Parts Replacement and Cleaning 133 ...
Page 147: ...Adjustment 6 Actions after Replacement 141 ...
Page 149: ...Troubleshooting 7 Test Print 143 Troubleshooting 147 Obtaining Debug Log 149 ...
Page 160: ...Error Jam Alarm 8 Overview 154 Error Code Details 155 Jam Code 160 Alarm Code 163 ...
Page 171: ...Service Mode 9 Overview 165 Service Mode 169 ...