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MX-LCX1  SELF-DIAGNOSIS AND TROUBLE CODES  9 – 1

Service Manual      

 

1)

When you run SIM 4-02 using the keypad on the main unit, the
following screen appears and you can monitor changes in sen-
sor status.

* When a sensor turns ON, the corresponding sensor name is

highlighted. 

* The [

↑] button can be used to move to the previous page.

This button is, however, enabled only when there is one or
more pages that precede the current page. 
When there is no page that precedes the current page, the
[

↑] button is disabled and grayed out. 

The [

↓] button can be used to move to the next page. This

button is, however, enabled only when there is one or more
pages that follow the current page. 
When there is no page that follows the current page, the [

↓]

button is disabled and grayed out. 

* You can exit from SIM mode by pressing the [CA] key. 
* You can return to the SUB number entry screen by pressing the

[SYSTEM SETTING] key. 

< Sensor name list: A4 LCC sensors>

1)

Run SIM 4-03 using the keypad on the main unit.  The follow-
ing screen appears: 

2)

Select one or more loads you want to operate (in this example,
[DPFM]).  When you select the button that corresponds to a
load, the button is highlighted.  The button is unhighlighted
when you press it again. 

3)

Press the [EXECUTE] button to operate the selected load(s).
While the load or loads are operating, the [EXECUTE] button
is highlighted.
* Alternatively, you can press the [EXECUTE] button without

selecting any load; in this case, the [EXECUTE] button is
highlighted to indicate that you are in Execute mode.  When,
in this mode, you press the button that corresponds to a load
you want to operate, the load immediately starts operating.

* While one or more loads are operating, you can stop the

operation or add another load.

* Pressing the [EXECUTE] button stops the currently operat-

ing load(s); the [EXECUTE] button then becomes unhigh-
lighted.

* You can return to the SUB number entry screen by pressing the

[SYSTEM SETTING] key. 

* You can exit from SIM mode by pressing the [CA] key.
<A4 LCC load item list>

1)

Run SIM 4-05 using the keypad on the main unit.  The follow-
ing screen appears (initially, both DTRC and LTRC are OFF): 

2)

Select [LTRC] and press the button. 
The system starts checking the "turn ON" behavior, and dis-
plays the result of the check (the indicator changes to "ON" if
normal, or remains "OFF" if abnormal). 

3)

Select [LTRC] (now highlighted) and press the button. 
The system starts checking the "turn OFF" behavior, and dis-
plays the result of the check (the indicator changes to "OFF" if
normal, or remains "ON" if abnormal). 

* You can exit from SIM mode by pressing the [CA] key. 
* You can return to the SUB number entry screen by pressing the

[SYSTEM SETTING] key. 

<Button description>

1)

Run SIM 15 using the keypad on the main unit. 
The following screen appears. 

 LPFD

 LCC transport sensor

 LUD

 LCC tray upper limit sensor

 LDD

 LCC tray lower limit sensor

 LPED

 LCC paper-on-tray sensor 

 LCD

 LCC tray insertion sensor

 LDSW

 LCC upper door latch switch

 LRE

 LCC lift motor encoder sensor

 L24VM

 LCC24V power supply monitor

 LLSW

 LCC upper limit switch

 LTOD

 LCC main unit connection sensor

0

DSK /LCC SENSOR CHECK

CLOSE

SIMULATION NO.04-02

TEST

1/2

DCSS21

DCSS22

DCSS23

DCSS24

DCSI1

DPFD1

DLUD1

DPED1

DCSPD1

DCSS11

DCSS12

DCSS13

DCSS14

DPWD11

DPWD12

DCSI2

DPFD2

DLUD2

DPED2

DCSPD2

0

SIMULATION NO.04-03

TEST

DSK/LCC LOAD CHECK

EXECUTE

1/1

DPFM

DLUM1

DPUC1

DLUM2

DPUC2

DTRC

CLOSE

LPFM

LCC transport motor

LLM

LCC lift motor

LPFC

LCC paper feed clutch

LPFS

LCC paper feed solenoid

LTRC

LCC transport clutch

LTRC

A4LCC transport clutch

CLOSE

1/1

SIMULATION NO.04-05

DESK/LCC SYNCRONIZING SIGNAL CHECK

DTRC

LTRC

: DTRC OFF

: LTRC OFF

0

TEST

0

SIMULATION NO.15

TEST

LCC TROUBLE CANCELLATION

CLOSE

EXECUTE

ARE YOU SURE?

YES

NO

MX-LCX1  SELF-DIAGNOSIS AND TROUBLE CODES  9 – 2

2)

Press the [EXECUTE] button. 
The [EXECUTE] button is highlighted with the [YES] and [NO]
buttons enabled. 

3)

Press the [YES] button. 
Trouble cancellation is executed.  The [YES] button is high-
lighted, and "side LCC lift motor trouble" is cancelled. 
* If you press the [NO] or [EXECUTE] button, the [EXECUTE]

button is unhighlighted with the [YES] and [NO] buttons dis-
abled (grayed out).

* When trouble cancellation finishes, the [EXECUTE] button is

unhighlighted with the [YES] and [NO] buttons disabled
(grayed out). 

* You can exit from SIM mode by pressing the [CA] key. 
* You can return to the Main screen by pressing the [SYSTEM

SETTING] key. 

<Cancellable Trouble Codes>

* The above trouble state is preserved even after the power has

been turned OFF. 

When a trouble condition occurs in the machine or when there is a
consumable part whose life is nearly or already expired, the
machine's self-diagnosis program detects and analyzes the condi-
tion and issues the appropriate notification on the display panel so
that the user and the serviceperson can take suitable action.  In the
case of a trouble condition (rather than the expiration of a part's
life), the self-diagnosis program not only issues the appropriate
notification but also stops the machine to minimize damage. 

1)

Ensures safety by stopping the machine as soon as a trouble
condition is detected.  

2)

Minimizes damage to the machine by stopping the machine as
soon as a trouble condition is detected.  

3)

Displays the description of the trouble condition so that the
user or serviceperson can quickly and accurately identify the
source of the trouble.  This helps the serviceperson to perform
repair work most effectively and efficiently. 

4)

Issues an alarm when there is a consumable part whose life is
nearly expired so that the user can order the consumable part
before its life is actually expired.  This helps prevent machine
outage due to the absence of a consumable part. 

Self-diagnosis messages can be classified into the following types:

The self-diagnosis program built in the machine is always the mon-
itoring machine function.
When the self-diagnosis program detects a trouble condition, it
stops the machine and displays the appropriate trouble message.
Typically, warning messages are displayed when there is a con-
sumable part whose life is nearly or already expired.
Some warning messages are displayed without machine stoppage,
while other warning messages are displayed at the same time as
machine stoppage.
Trouble and warning messages are displayed on the LCD with one
or more specific indicator lamps lit or flashing.
Some trouble messages are automatically cleared upon recovery
from the trouble, while other trouble messages must be cleared
using the corresponding SIM.
Also, some of warning messages associated with consumable
parts are automatically cleared upon replacement or refill of the
consumable part, while other messages must be cleared using the
corresponding SIM.

U6-09

Side LCC lift motor trouble

Classification 
1

User

This type includes user-recoverable 
trouble or warning conditions (such as 
paper jam or consumable part life 
expiration). 

Service

This type includes serviceperson-
recoverable trouble or warning 
conditions (such as motor trouble or 
maintenance).

Miscellaneous

—

Classification 
2

Warning

This type includes those messages that 
are primarily intended to warn the user 
and not directly related with machine 
trouble (such as a warning message 
issued when there is a consumable 
part whose life is nearly expired). 

Trouble

This type includes those messages that 
are directly related with machine 
trouble and issued at the same time as 
machine stoppage. 

Miscellaneous

—

Repair

Monitor machine function

Detect and analyze trouble

Trouble/warning

Trouble/warning

Stop the machine

Identify the cause

Cancel self-diagnosis

message using "diag"

(test command), etc.

Standby

Consumable part

life expired?

Replace or refill the

consumable part

Recovery

Display the trouble

description

Trouble

Trouble

Warning

Warning

YES

NO

MX-LCX1  SELF-DIAGNOSIS AND TROUBLE CODES  9 – 3

 

 

 

 

 

1

U6

9

LCC lift motor trouble

LCC

Tray is being lifted.

Check connections, etc.

2

20

LCC communication trouble

LCC

LCC communication is 
made.

Turn OFF and back ON 
the power.

3

21

LCC transport motor trouble

LCC

Paper is fed. 

Check connections, etc.

4

22

LCC 24V power supply abnormal

LCC

The power is turned ON.

Check connections, etc.

5

51

LCC incompatibility trouble

LCC

The power is turned ON.

Check connections, etc.

Content

Lift motor trouble

Description

LCC lift motor malfunctioning;  tray lift failure

Case 1

Cause

Defective connection or disconnection of 
connector and harness

Check and 
Remedy

Check the connector and the harness in the 
motor line.  Connect the connector properly.  
Replace the harness.

Case 2

Cause

Motor lock, motor rpm abnormality, motor 
overcurrent, LRE failure, intrusion of foreign 
material

Check and 
Remedy

Use SIM 4-2 to select LRE and check the 
operation of the single unit.  Use SIM 4-3 to 
select LLM and check the operation of the 
single unit.  Check for intrusion of any foreign 
material in the drive system.

Case 3

Cause

LCC main PWB failure;  lift motor 
malfunctioning

Check and 
Remedy

Replace the LCC main PWB or the lift motor.  
Use SIM.15 to perform trouble cancellation.

Content

Communication trouble

Description

Communication error with LCC;  communication line test 
error after turning on the power or canceling an exclusive 
simulation.

Case 1

Cause

Defective connection or disconnection of 
connector and harness

Check and 
Remedy

Check the connector and the harness in the 
communication line.  Connect the connector 
properly.  Replace the harness.

Case 2

Cause

LCC main PWB failure;  control PWB (PCU) 
failure

Check and 
Remedy

Replace the LCC main PWB.  Replace the 
control PWB (PCU).

Case 3

Cause

Malfunction caused by electrical noise

Check and 
Remedy

Cancel by turning OFF/ON the power.

Content

Transport motor trouble

Description

LCC transport motor malfunctioning

Case 1

Cause

Defective connection or disconnection of 
connector and harness

Check and 
Remedy

Check the connector and the harness in the 
motor line.  Connect the connector properly.  
Replace the harness.

Case 2

Cause

Motor lock, motor rpm abnormality, motor 
overcurrent, intrusion of foreign material

Check and 
Remedy

Use SIM 4-3 to select LPFM and check the 
operation of the single unit.  Check for 
intrusion of any foreign material in the drive 
system.

Case 3

Cause

LCC main PWB failure;  Transport motor 
malfunctioning

Check and 
Remedy

Replace the LCC main PWB or the transport 
motor.

Content

LCC 24V power supply abnormal

Description

24V trouble

Case 1

Cause

Defective connection or disconnection of 
connector and harness

Check and 
Remedy

Check the connector and the harness which 
connect LCC and the main unit.  Connect the 
connector properly.  Replace the harness.

Case 2

Cause

Power source fuse blown.

Check and 
Remedy

Check for short circuit between 24V and 
GND.  Check for pinched harness and the 
LCC main PWB trouble.  Replace the fuse, 
the harness, and the LCC main PWB.

Case 3

Cause

Power supply abnormality in the main unit.

Check and 
Remedy

Check the 24V output of the main unit side 
power supply.

Content

Incompatibility trouble

Description

User attempted to connect an LCC incompatible with MX-
LCX1.

Case 1

Cause

User attempted to connect an MX-LCX1 with 
an incompatible device such as AR-LC5.

Check 
and 
Remedy

Connect MX-LCX1.

MX-LCX1  ELECTRICAL SECTION  10 – 1

Service Manual      

 

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

㪣㪚㪚㩷㪤㪘㪠㪥㩷㩷㪧㪮㪙㩷㪚㪩

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

12

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