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Model
MX-LCX6
Pages
28
Size
2.08 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Service Manual 10.06.08
File
mx-lcx6.pdf
Date
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MX-LCX6  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
 
U6-51 LCC incompatibility trouble
No.
MAIN 
CODE
SUB 
CODE
Title (Content)
Section
Operation mode
Countermeasure (Remedy)
Note
1
U6
09
Lift motor trouble
LCC
Tray lift-up
Check connection.
2
20
Communication trouble
LCC
LCC communication
Turn OFF/ON the power.
3
21
Transport motor trouble
LCC
Paper feed
Check connection.
4
22
24V trouble
LCC
Power ON
Check connection.
5
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.
• The motor is rotated for 24sec or more.
Section
PCU
Case 1
Cause
Sensor trouble, LCC control PWB trouble, gear 
breakage, lift motor trouble
Check 
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.
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
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
Check 
and 
Remedy
Turn OFF/ON the power to cancel the trouble. 
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.
Section
PCU
Case 1
Cause
Motor lock, motor RPM abnormality, an overcurrent 
to the motor, LCC control PWB trouble
Check 
and 
Remedy
Use SIM4-3 to check the operation of the transport 
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
Check 
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.
Trouble content
Detection of incompatible LCC connection.
Section
PCU
Case 1
Cause
Connection of incompatible LCC, is detected.
Check 
and 
Remedy
Install compatible LCC.
MX-LCX6  ELECTRICAL SECTION  11 – 1
MX-LCX6
Service Manual
 
[11] ELECTRICAL SECTION
1. Electronic/mechanical parts relationship diagram
SMP-03V-NC
LRE
+5V
1
GND2
2
3
+5V
B8B-PH-K-S
CN-B
GND2
3
1
6
4
8
2
7
5
(/LTLS)
+24V
+5V
GND2
LRE
LDD
3
2
1
2
3
1
SMR-03V-N
LDD
+5V
1
GND2
2
3
3
2
1
2
3
1
SMP-03V-NC
SMR-03V-N
10
16
14
1
18
12
5
+5V
GND1
11
17
/LTRC
7
GND2 GND2
/LPFS
+24V
CN-C
+24V
15
+5V
4
13
/LTOD
20
22
9
B24B-PHDSS-B
2
8
/LPED
+5V
23
+5VR
24
3
/LPFD
+5V
19
GND2
/LPFC
21
GND2
GND2
GND2
+5V
EXIN2 EXIN1
LUD
6
9
10
11
12
6
3
SMP-18V-NC
5
1
7
2
8
4
15
16
17
18
13
14
+5V
1
2
3
/LTOD
GND2
1
1
2
2
3
3
SMR-03V-N
SMP-03V-NC
179228-3
SMP-03V-NC
SMR-03V-N
ELR-03V
1
2
LLM
LLM(GND)
5
4
LPFM-T
+24V
GND1
/LPFM-EN
/LPFM-CLK
2
3
PHR-5
1
+5V
3
2
1
LCD
GND2
1
3
ELP-03V
2
3
2
1
1
3
2
2
1
3
N.C.
+5V
LLM
5
GND2
6
9
N.C.
7
B14B-PHDSS-B
2
8
3
GND2
/LPFM-EN
LCD
4
LPFM-T
10
LLM(GND)
11
/LPFM-CLK
CN-E
1
GND1
1 2
GND1
13
+24V(LOSW)
14
7
12
11
10
9
3
5
2
SMR-18V-N
2
3
6
8
1
4
1
2
1
2
1
GND2
1
/LPED
2
LUD
+5V
1
GND2
2
3
1
+5V
3
3
2
13
14
15
16
17
18
SMP-03V-NC
SMR-02V-N
SMP-02V-NC
SMR-03V-N
GND2
1
3
+5VR
2
/LPFD
SMR-03V-N
SMP-03V-NC
3
2
1
2
1
3
/LTRC
3
2
1
+24V
N.C.
PHR-3
CZHR-03V-S
PHR-3
PHR-3
2 1
3
4
5
6
+24V(L24VM)
+24V(LLSW)
GND2
CN-D
B10B-PHDSS-B
7
9
10
GND2 GND2
8
+24V(LDSW)
GND2
GND2
+24V(LLSW)
+24V(L24VM)
NC
3
2
1
COM
ON
NC
3
2
1
COM
ON
1
2
1
2
ELR-04NV
ELP-04NV
4
3
4
3
PS-187-3V
FPS-187
LRE
LDD
LTOD
LTRC
LUD
LPED
LLSW
LDSW
LLM
LPFM
LCD
LPFS
LPFC
LPFD
LCC MAIN PWB CR
MX-LCX6  ELECTRICAL SECTION  11 – 2
2. Block diagram
LPFM
LLM
CPU
(H8/3687HV)
EEPROM
LCC
M
AIN
PWB
CR
MX-LCX6
GND2
Xtal 7.37MHz
LUD
LDD
LPED
LPFD
LTOD
LCD
LRE
LTRC
LPFC
LPFS
LLSW
LDSW
+24V
+24V
+24V
+5V
+5V
+5V
+5V+5V
+5V
+5V
+5V
(TD62003AP)
+24V
-
-
/LPFM /LPFM-CLK LPFM-T
/RXD-LCC
/TXD-LCC
/DSR-LCC
/DTR-LCC
RES-LCC
/TRC-LCC
+5V
GND2
+24V
GND1
AC-L
AC-N
Heater
Ground
On-board
wr
ite
circuit
Output
bu
ffer
Output
bu
ffer
+24V
+5V
Input
bu
ffer
Input
bu
ffer
Input
bu
ffer
Input
bu
ffer
Tr
ansistor
arr
ay
Sensor
input
circuit
Current
control
circuit
Lift
m
otor
dr
iv
e
circuit
Po
ly
sw
itch
1.1A
L24VM
LDSW
LLSW
Upper
limit
monitoring
circuit
Upper
door
monitoring
circuit
24V
m
onitoring
circuit
Upper
door
latch
switch
Upper
limit
switch
LCC
lift
m
otor
MX-2300/2700
F
F
Tray
upper
limit
sensor
Transport
sensor
Tray
lower
limit
sensor
Paper-on-tray
sensor
Main
unit
connection
sensor
Tray
insertion
sensor
Lift
motor
encoder
sensor
LCC
paper
feed
clutch
LCC
transport
clutch
LCC
paper
feed
solenoid
MX-LCX6  ELECTRICAL SECTION  11 – 3
3. Wiring diagram
8
7
6
5
5
6
7
8
D
C
B
A
+5V
B8B-PH-K-S
CN-B
GND2
3
1
6
4
8
2
7
5
(/LTLS)
+24V
+5V
GND2
LRE
LDD
LCC
N.C.
LCC MAIN PWB CR
+5V
LLM
5
GND2
6
9
N.C.
7
B14B-PHDSS-B
2
8
3
GND2
/LPFM-EN
LCD
4
LPFM-T
10
LLM(GND)
11
/LPFM-CLK
CN-E
1
N.C.
B12B-PHDSS-B
11
/DSR-LCC
RES-LCC
9
GND1
4
1
3
+5V
/TRC-LCC
5
2
CN-A
12
N.C.
7
/DTR-LCC
6
+24V
8
10
/RXD-LCC
GND2
/TXD-LCC
S
10
16
14
1
18
12
5
+5V
GND1
11
17
/LTRC
7
GND2 GND2
/LPFS
+24V
CN-C
+24V
15
+5V
4
13
/LTOD
20
22
9
B24B-PHDSS-B
2
8
/LPED
+5V
23
+5VR
24
3
/LPFD
+5V
19
GND2
/LPFC
21
GND2
< Paper feed unit >
2 1
3
4
5
6
+24V(L24VM)
+24V(LLSW)
GND2
CN-D
B10B-PHDSS-B
7
9
10
GND2 GND2
8
+24V(LDSW)
GND2
GND2
E
GND2
GND2
+5V
EXIN2 EXIN1
+24V(LLSW)
+24V(L24VM)
GND
B14B-PHDSS-B
11
9
/TXD_LCC
4 3
+5V
5
2
CN-F
7
P85
6
RES_LCC
8
10
/NMI
+5V
/RES_LCC
1
GND1
12
GND1
13
+24V(LOSW)
14
Main unit
LUD
6
TXD_LCC
RXD_LCC
N.C.
12
13
14
GND
P86
P87
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