Sharp MX-LCX3N (serv.man8) Service Manual ▷ View online
MX-LCX3N SELF DIAG MESSAGE AND TROUBLE CODE 10 – 2
2. Trouble code list
3. Trouble code details
U6-09 LCC lift motor trouble
U6-20 LCC communication trouble
U6-21 LCC transport motor trouble
U6-22 LCC 24V power abnormality
U6-23 LCC tray descending trouble
(reverse winding detection)
U6-24 LCC tray lock detection trouble
U6-51 LCC incompatibility trouble
MAIN
CODE
SUB
CODE
Title (Content)
Section
Operation mode
Countermeasure (Remedy)
Note
U6
09
Lift motor trouble
LCC
When the tray is working
Check connection.
20
Communication trouble
LCC
LCC communication
Turn OFF/ON the power.
21
Transport motor trouble
LCC
Paper feed
Check connection.
22
24V trouble
LCC
Power ON
Check connection.
23
Tray descending trouble
LCC
When the tray is working
Check connection.
24
Tray lock trouble
LCC
When the tray is working
Check connection.
51
LCC incompatibility trouble
LCC
Power ON
Check connection.
Trouble content
• The encoder input value is not changed in
0.2sec (1st time)/0.5sec (2nd time and later)
after rotation of the motor.
after rotation of the motor.
• The motor is rotated for 48sec or more.
Section
PCU
Case 1
Cause
Sensor trouble, LCC control PWB trouble, gear
breakage, lift motor trouble
breakage, lift motor trouble
Check
and
Remedy
and
Remedy
Use SIM4-2 and 4-3 to check the operation of the
sensor and the lift motor. Use SIM15 to cancel the
trouble.
sensor and the lift motor. Use SIM15 to cancel the
trouble.
Trouble content
LCC communication error. Communication line test
error after turning ON the power or canceling the
exclusive simulation. LCC and machine model
codes discrepancy error
error after turning ON the power or canceling the
exclusive simulation. LCC and machine model
codes discrepancy error
Section
PCU
Case 1
Cause
Connector and harness connection trouble or
disconnection, LCC control PWB trouble, control
(PCU) PWB trouble, malfunction due to electrical
noises
disconnection, LCC control PWB trouble, control
(PCU) PWB trouble, malfunction due to electrical
noises
Check
and
Remedy
and
Remedy
Turn OFF/ON the power to cancel the trouble.
Check the connector and the harness of the
communication line.
Check the connector and the harness of the
communication line.
Trouble content
After passing 1 sec from turning ON the motor, the
lock state of the motor lock signal is detected
continuously for 1 sec.
lock state of the motor lock signal is detected
continuously for 1 sec.
Section
PCU
Case 1
Cause
Motor lock, motor RPM abnormality, an overcurrent
to the motor, LCC control PWB trouble
to the motor, LCC control PWB trouble
Check
and
Remedy
and
Remedy
Use SIM4-3 to check the operation of the transport
motor.
motor.
Trouble content
DC24V power is not supplied to LCC.
Section
PCU
Case 1
Cause
Connector and harness connection trouble or
disconnection, LCC control PWB trouble, power
unit trouble
disconnection, LCC control PWB trouble, power
unit trouble
Check
and
Remedy
and
Remedy
Check the connector and the harness of the power
line. Check that the power unit and the LCC control
PWB is of 24V.
line. Check that the power unit and the LCC control
PWB is of 24V.
Trouble content
Reverse winding of the LCC tray wire is detected.
Section
PCU
Case 1
Cause
Reverse winding of the wire
Check
and
Remedy
and
Remedy
Check the wire.
Case 2
Cause
Connector and harness connection trouble
Check
and
Remedy
and
Remedy
Check connection of the connector and the
harness.
harness.
Case 3
Cause
Reverse winding detection SW-ON, reverse
winding detection SW trouble, LCC control PWB
trouble
winding detection SW trouble, LCC control PWB
trouble
Check
and
Remedy
and
Remedy
Replace the reverse winding SW and the LCC
control PWB.
control PWB.
Trouble content
Malfunction of the LCC tray lock mechanism is
detected.
detected.
Section
PCU
Case 1
Cause
Tray lock mechanism trouble
Check
and
Remedy
and
Remedy
Check the tray lock mechanism.
Case 2
Cause
Connector and harness connection trouble
Check
and
Remedy
and
Remedy
Check connection of the connector and the
harness.
harness.
Case 3
Cause
Tray lock detection sensor trouble, LCC control
PWB trouble
PWB trouble
Check
and
Remedy
and
Remedy
Replace the tray lock detection sensor and the
LCC control PWB.
LCC control PWB.
Trouble content
Detection of incompatible LCC connection.
Section
PCU
Case 1
Cause
Connection of incompatible LCC, is detected.
Check
and
Remedy
and
Remedy
Install compatible LCC.
MX-LCX3N ELECTRICAL SECTION 11 – 1
MX-LCX3N
Service Manual
[11] ELECTRICAL SECTION
1. Wiring diagram
1
2
LLM+
LLM-
2
1
1
2
Safety earth
ELP-02V
1
3
ELP-03V
2
3
2
1
Lift motor
Reverse-winding
detection switch
Lower limit sensor
Paper front surface sensor
Lock release PWB
Tray lock sensor
Cassette unit front harness A3 CD
Cassette unit side harness A3 CD
Cassette relay harness CD
Cassette unit
rear harness A3 CD
Lowering SW PWB relay harness
Lift motor encoder input
2
2
1
1
3
3
4
4
55
6
6
7
7
88
9
9
10
10
11 11
12 12
13 13
14
14
15
15
16 16
1
1
22
33
44
5
5
SMR-11V-N
17 17
18
18
9
10
11
12
7
8
12
11
10
9
8
7
6
4
4
PHNR-16-H
6
5
5
3
2
2
1
1
3
2
GND
PHR-3
LDD
1
3
LDD
2
SMP-03V-NC
3
1
1
3
SMR-03V-N
2
LRE
+5V
LPUD
2
LPUD
3
179228-3
GND
1
6
8
9
7
10
6
7
10
9
8
1
4
RES-LCC
13
7
RXD-LCC
10
15
N.C.
AC-N(H)
7
9
N.C.
4
11
5
GND
1
13
ELP-12V
4
+5V
15
14
/DSR-LCC
12
2
TXD-LCC
9
4
F.G.
6
8
N.C.
3
3
ELR-12V
+24V
Connected
to the main body
12
ELR-15V
F.G.
14
5
/DTR-LCC
11
10
N.C.
8
ELP-15V
AC-L(H)
5
12
/TRC-LCC
2
6
5
12
GND
3
3
SMR-03V-N
SMP-03V-NC
2
1
2
1
ELR-03V
+24V
LWRSW
LWRSW(24V)
3
2
ON
PS-187-3V
1
<Cassette unit>
GND
2
4
PHR-4
+5VR
LTLLED
LTLSW
3
LTLSW
LTLLED
1
5
6
LWRSW(24V)
5
4
LTLD
5
4
4
10
9
GND
9
8
3
10
2
CN-B
1
9
12
7
4
1
SNP-18V-NC
SMR-18V-N
7
LCD(24V)
15
11
+5V
9
LPUD
B18B-PHDSS
10
GND
12
1
/DTR-LCC
1
+24V
CN-A
GND
8
GND
SMP-11V-NC
7
13
9
ELR-02V
N.C.
4
CN-C
2
LTLSL
7
9
6
LLM(+)
77
10
3
4
10
B16B-PHDSS
2
9
1
GND
8
/TRC-LCC
6
PHR-9
1
Heater harness
Heater
Main unit relay harness A3
6
GND
GND
15
14
3
RES-LCC
B9B-PH-K-S
7
3
9
LLSW(24V)
11
RXD-LCC
2
GND
GND
+5V
CN-D
4
6
12
8
PAP-12V-S
5
GND
2
N.C.
6
8
5
GND
2
8
PHDR-16VS-2
1
6
+5VR
24V-ICP
3
2
B12B-PASK
11
LDD
5
8
16
16
12
GND
3
+5VR
2
5
LIPSW(24V)
14
13
6
/DSR-LCC
1
LTLSW
8
10
TXD-LCC
3
GND
3
+5VR
4
M
MAIN PWB
5
LRE
11
7
LLM(-)
3
1
2
PS-187-2V
LPISW
LCD(24V)
LCD
Cassete detection
switch
LIPSW(24V)
+24V(PS)
GND
PHNR-16-H
LTLLED
11
3
2
SMP-04V-NC
2
3
4
4
GND
LFAN1
24V
LTLSU
N.C.
11
12
13
14
15
16
17
18
13
11
12
14
15
16
17
18
PHDR-18VS-2
+5V
GND
24V
LFAN2
GND
13
14
14
13
15
16
15
16
11
11
+5V
LTLD
2
LTLD
3
GND
1
PHR-3
SMR-04V-N
7
7
6
4
4
PHNR-09-H
6
55
3
2
2
1
1
3
PHNR-09-H
8
8
9
9
3
3
SMP-03V-NC
2
1
2
1
SMR-03V-N
LFAN1
LTLS
SMR-03V-N
GND
2
1
3
6
5
4
3
2
1
PHNR-06-H
4
5
6
SMP-03V-NC
3
3
2
1
2
1
+5VR
LFAN2
Main unit
MX-LCX3N ELECTRICAL SECTION 11 – 2
2
1
2
1
GND
5
4
/LPED
LPFM-T
+24V
GND1
/LUD
LUD
LPED
LPFM
LPFM-CLK
2
LPFM
+5V
1
GND
2
3
NC
1
+5V
3
PHR-5
1
3
1
LDSW(24V)
LPFS
LLSW
3
Tray paper sensor
Tray upper limit sensor
Paper feed solenoid
Paper feed sensor
Transport sensor harness A3 CD
Upper open/close switch
Upper limit switch
Paper feed clutch
Paper transport clutch
LCC transport motor
Main unit
communication sensor
Transport sensor relay harness A3
Transport sensor relay harness A3 CD
2
<Paper feed unit>
SMP-02V-BC SMR-02V-B
GND
1
3
+5V
2
/LPFD
LPFD
PS-187-3V
179228-3
PHR-3
179228-3
LTRC
3
2
1
N.C.
LTRC
CZHR-03V-S
LPFC
3
2
1
+24V
N.C.
LPFC
CZHR-03V-S
1
3
1
SMP-03V-NC
SMR-03V-N
2
2
3
SMR-03V-N
1
1
3
2
2
3
<Cassette unit>
3
+5VR
LTOD
1
179228-3
2
LTOD
GND
+24V
2
LLSW(24V)
9
6
7
/LPFD
6
LWRSW(24V)
5
4
LTLD
5
4
9
4
/LPED
1
8
GND
PHR-5
GND
8
2
CN-B
GND
16
12
9
1
+5V
7
LPFS
3
7
1
LCD(24V)
3
2
8
13
+5V
6
B20B-PHDSS
4
3
9
LPUD
B18B-PHDSS
LPFM-CLK
10
GND
LDSW(24V)
11
1
3
18
/DTR-LCC
1
+24V
3
CN-A
2
GND
GND
7
13
11
15
N.C.
4
9
/LUD
2
GND
CN-C
LTLSL
7
9
LLM(+)
6
+5V
3
5
CN-G
10
18
10
11
3
+5V
7
+24V(PS)
4
B16B-PHDSS
1
GND
8
4
15
/TRC-LCC
8
6
2
GND
GND
15
5
7
6
14
RES-LCC
5
CN-F
4
B9B-PH-K-S
3
LPFM-T
9
LLSW(24V)
12
2
17
RXD-LCC
2
GND
2
11
PHR-11
5
GND
+5V
CN-D
4
6
12
10
5
8
GND
3
GND
2
N.C.
6
8
GND
8
5
GND
2
4
+24V
B5B-PH-K-S
1
6
+5VR
24V-ICP
3
GND
17
B12B-PASK
11
10
2
GND
8
LLSW(24V)
5
LDD
16
SMP-18V-NC
SMR-18V-N
1
14
GND
7
PHDR-20VS-2
5
LPFC
1
+5VR
2
10
LIPSW(24V)
14
GND
9
6
7
4
13
/DSR-LCC
4
CN-E
1
LTLSW
LPFM
8
12
5
16
TXD-LCC
3
GND
1
10
B11B-PH-K-S
1
+24V
3
+5VR
MAIN PWB
5
LRE
LTRC
11
LLM(-)
LDSW(24V)
1
LDSW
1
FPS-187
+24V
LDSW(24V)
LIPSW(24V)
99
10
10
GND
+24V(PS)
GND
11
12
13
14
15
16
18
19
20
17
11
12
13
14
15
16
17
18
19
20
LDSW(24V)-ICP
GND
GND
GND
GND
LTOD
GND
+5VR
LTLLED
LDSW(24V)-ICP
GND
LFAN1
24V
LTLSU
N.C.
11
12
13
14
15
16
17
18
+5V
GND
24V
LFAN2
GND
GND
3
11
3
22
SMP-03V-NC
SMP-04V-NC
SMR-04V-N
ICP-N15
ICP-N15
Paper feed side
main harness
Paper feed unit harness A3
MX-LCX3N ELECTRICAL SECTION 11 – 3
2. Block diagram
RXD-LCC
DSR-LCC
TXD-LCC
DTR-LCC
RES-LCC
GND2
5V
24V
GND1
F.G.
TRC-LCC
+24V
+24V
LDSW(24V)-ICP
+24V
5V
Communication
buffer circuit
Onboard
writing circuit
Main unit
EEPROM
A3-LCC P
A3-LCC
Xtal
7.37MHz
Communication
writing circuit
LCC tray lock solenoid
Solenoid clutch drive circuit
LCC tray LED(LTLLED)
LCC separation
auxiliary fan(FAN1)
LCC separation
auxiliary fan(FAN2)
LCC paper feed
clutch(LPFC)
LCC paper feed
clutch(LTRC)
LCC paper feed solenoid(LPFS)
Lock release(LTLSU)
Lock(LTLSL)
LED drive
circuit
Input circuit
Sensor
input circuit
Buffer
circuit
LCC tray SW(LTLSW)
DOWN SW PWB
ICP-N15
ICP-N20
ICP-N15
IC protector
IC protector
IC protector
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