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MX-M182 TROUBLE CODE LIST 8-5

H5

01

Content

5 continuous POUT not-reached error

Detail

When 5 continuous not-reached jams to the 
paper exit sensor (POUT) occur. 
The jam counter is backed up and it is used in 
a job after turning on the power.

Cause

Jam paper is not removed from the fusing unit. 
(Jam paper remains.)
Paper exit sensor breakdown or harness 
connection trouble
Fusing unit installation trouble

Check 
and 
remedy

Check for jam paper remaining in the fusing 
unit. (winding, etc.)
Check the POUT sensor harness, and check 
installation of the fusing unit. 
Use SIM14 to clear the self diag display.

L1

00

Content

Scanner feed trouble

Detail

Though the specified steps of motor pulses are 
outputted, the mirror home position sensor 
remains ON. 

Cause

Mirror unit abnormality
The scanner wire is disconnected. 
The origin detection sensor abnormality
Mirror motor harness abnormality

Check 
and 
remedy

Use SIM 1-1 to check the mirror reciprocating 
operations. 

Check for disconnection of the scanner wire. 
Check the harness and the connector between 
the mirror motor and the MCU PWB. 
Replace the mirror unit. 
Replace the MCU PWB. 

When the mirror does feed. 
Use SIM 1-2 to check the mirror home position 
sensor.

L3

00

Content

Scanner return trouble

Detail

Though the specified steps of motor pulses are 
outputted, the mirror home position sensor 
does not turn ON. 

Cause

Mirror unit abnormality
Scanner wire disconnection
Origin detection sensor abnormality
Mirror motor harness abnormality

Check 
and 
remedy

Use SIM 1-1 to check the mirror reciprocating 
operations. 

When the mirror does not return.
Check for disconnection of the scanner wire. 
Check the harness and the connector between 
the mirror motor and the MCU PWB. 
Replace the mirror unit. 
Replace the MCU PWB. 
When the mirror does feed. 

Use SIM 1-2 to check the mirror home position 
sensor. 

Main 
code

Sub 

code

Details of trouble

L4

01

Content

Main motor lock detection

Detail

The main motor does not rotate. 
After rotation of the main motor, the motor lock 
signal is detected for 1 sec or more. 
During rotation of the main motor, the motor 
lock signal is detected for 1 sec. 
When the main motor is stopped, the motor 
lock signal is not detected for 5sec or more. 
(Though the motor is stationary, it is judged as 
stable rotation.)

Cause

Main motor unit abnormality
Improper connection or disconnection the main 
motor and the harness. 
MCU PWB abnormality

Check 
and 
remedy

Use SIM 25-01 to check the main motor 
operations. 
Check connection of the main motor harness/
connector.
Replace the main motor. 
Replace the MCU PWB.

11

Content

Shifter motor trouble.

Detail

The shifter home position detection signal is 
not detected when initializing the shifter. 

Cause

Shifter motor abnormality, improper connection 
or disconnection of the harness, shifter home 
position sensor abnormality.

Check 
and 
remedy

Use SIM 03-11 to check the shifter motor 
operations. 
Check connection of the harness/connector of 
the shifter motor. 
Replace the shifter motor. 
Replace the MCU PWB. 

32

Content

PSFAN lock detection 

Detail

The PSFAN does not rotate. 
Sampling is performed in 50msec interval, and 
the normal signal cannot be detected 5 times 
continuously in 1 sec.

Cause

Fan trouble or harness contact trouble and 
disconnection 

Check 
and 
remedy

Check connection of the fan harness and the 
connector. 
Replace the fan. 
Replace the MCU PWB.

L6

10

Content

Polygon motor lock detection

Detail

The polygon motor does not rotate
After beginning to rotate the polygon motor, the 
motor lock signal is detected for 20sec or more. 
During rotation of the polygon motor, the motor 
lock signal is detected for 1sec.

Cause

Polygon motor unit abnormality
Improper connection or disconnection of the 
polygon motor and the harness. 
MCU PWB abnormality

Check 
and 
remedy

Use SIM 61-3 to check the polygon motor 
operations. 
Check connection of the polygon motor 
harness/connector.
Replace the LSU unit.
Replace the MCU PWB.

Main 
code

Sub 

code

Details of trouble

MX-M182 TROUBLE CODE LIST 8-6

Described on the communication report table, the communication man-
agement table, and the protocol communication report table when com-
munication is completed.

Communication result  X X  (X X X X)

Upper 2 digits of a communication result code:  Communication report 
code of 00 - 90 (Refer to the list of communication report codes.)

Lower 4 digits of a communication result code:  Codes used by service-
man.

Note) Communication report sub code 1 and sub code 2 are in hexadec-

imal. (The others are in decimal.)

L8

01

Content

No full wave signal.

Detail

The zero cross signal is not detected.

Cause

Power unit abnormality.
MCU PWB abnormality.

Check 
and 
remedy

Check connection of the harness and 
connectors. 
Replace the MCU PWB. 
Replace the power unit. 

U1

03

Content

FAX board battery error.

Detail

FAX board backup battery error.

Cause

The voltage of the backup battery of SRAM 
which is installed to the FAX board falls below a 
certain level. 

Check 
and 
remedy

Replace the battery.

U2

04

Content

EEPROM read/write error (Serial 
communication error)

Detail

EEPROM access process error

Cause

EEPROM abnormality

Check 
and 
remedy

Check that the EEPROM is properly set. 
Use SIM 16 to cancel the trouble. 
Replace the MCU PWB.

11

Content

Counter check sum error (EEPROM)

Detail

Check sum error of the counter area in the 
EEPROM

Cause

EEPROM abnormality

Check 
and 
remedy

Check that the EEPROM is properly set. 
Use SIM 16 to cancel the trouble. 
Replace the MCU PWB.

U9

00

Content

Panel board communication trouble.

Detail

Communication trouble with the panel board.

Cause

No command can be sent from the MCU to the 
panel. 

Check 
and 
remedy

MCU PWB - Panel PWB harness trouble.
Replace the panel or the MCU PWB.
Machine reset (Power OFF/ON).

80

Content

Panel board communication trouble (Protocol).

Detail

An error occurs in communication between 
MCU -Panel PWB. 

Cause

MCU PWB - Panel PWB harness trouble/ 
Garbled data.

Check 
and 
remedy

MCU PWB - Panel PWB harness trouble.
Replace the panel or the MCU PWB. 
Machine reset (Power OFF/ON).

81

Content

Panel board communication trouble (Parity).

Detail

A parity error occurs in communication 
between the MCU and the Panel PWB. 

Cause

MCU PWB - Panel PWB harness trouble/ 
Garbled data.

Check 
and 
remedy

MCU PWB - Panel PWB harness trouble.
Replace the panel or the MCU PWB. 
Machine reset (Power OFF/ON). 

82

Content

Panel board communication trouble (Overrun).

Detail

An overrun error occurs in communication 
between the MCU and the panel board. 

Cause

MCU PWB - Panel PWB harness trouble/ 
Garbled data.

Check 
and 
remedy

MCU PWB - Panel PWB harness trouble.
Replace the panel or the MCU PWB. 
Machine reset (Power OFF/ON).

Main 
code

Sub 

code

Details of trouble

U9

84

Content

Panel board communication trouble (Framing).

Detail

A framing error occurs in communication 
between the MCU and the Panel PWB. 

Cause

MCU PWB - Panel PWB harness trouble/ 
Garbled data.

Check 
and 
remedy

MCU PWB - Panel PWB harness trouble.
Replace the panel or the MCU PWB. 
Machine reset (Power OFF/ON).

88

Content

Panel board communication trouble (Time out).

Detail

A time-out error occurs in communication 
between the MCU and the Panel PWB. 

Cause

A command is completely  sent from the MCU 
to the panel.

Check 
and 
remedy

MCU PWB - Panel PWB harness trouble.
Replace the panel or the MCU PWB. 
Machine reset (Power OFF/ON).

99

Content

Panel language error.

Detail

Language discrepancy error.

Cause

Discrepancy between the machine language 
and the panel language.

Check 
and 
remedy

Replace the panel or the MCU PWB. 
Reset the machine. (Power OFF/ON).

CH 
ON

None Content

Side door open

Detail

The side door is open. 

Cause

Side door sensor abnormality
MCU PWB abnormality

Check 
and 
remedy

Check that all the side doors are closed. 
Replace the MCU PWB.

CH 

Blink

None Content

Developing cartridge not installed

Detail

The developing cartridge is not installed. 
Communication with the CRUM cannot be 
made in initial check of the CRUM. 

Cause

Developing unit disconnection 
MCU PWB abnormality
CRUM chip abnormality

Check 
and 
remedy

Check installation of the developing unit. 
Replace the MCU PWB.

Top 2 digits

Communication report sub code 1 (Refer to 
the list of communication sub code 1.)

Bottom 2 digits

Communication report sub code 2 (Refer to 
the list of communication sub code 2.)

Main 
code

Sub 

code

Details of trouble

MX-M182 TROUBLE CODE LIST 8-7

(Note)  For result codes 16 - 31, V.34 mode communication.

For 32 or later, refer to the table below.

Result 

code

Final reception signal

(Transmitting side)

Final reception signal

(Receiving side)

0

Abnormal signal

Abnormal signal

1

NSF, DIS

(SID), (SUB), NSS, DCS

2

CFR

(PWD), (SEP), NSC, DTC

3

FTT

EOP

4

MCF

EOM

5

PIP, PIN

MPS

6

RTN, RTP

PRI-Q

7

No signal, DCN

DCN

8

PPR

PPS-EOP

9

PPS-EOM

10

PPS-MPS, PPS-NULL

11

RNR

RR

12

CTR

CTC

13

ERR

EOR-Q

14

PPS-PRI-Q

15

16

Abnormal signal

Abnormal signal

17

NSF, DIS

SID, SUB, NSS, DCS

18

CFR

PWD, SEP, NSC, DTC

19

FTT

PPS-EOP

20

MCF

PPS-EOM

21

PIP, PIN

PPS-MPS, PPS-NULL

22

RTN, RTP

PRI-Q

23

No signal, DCN

DCN

24

PPR

25

RNR

RR

26

CTR

CTC

27

ERR

EOR-Q

28

PPS-PRI-Q

29

V.8 Phase-1

V.8 Phase-1

30

V.8 Phase-2

V.8 Phase-2

31

V.8 Phase-3

V.8 Phase-3

Result code 

(Communica-

tion result)

Communica-

tion report 

result column

Communication interruption 

content

0 – 31

Refer to the 
previous table.

Depends on the communication 
disconnection position. For 16 or 
later, V.34 mode communication.

33

Busy

The calling side cannot connect the 
line with the other party.

34

Cancel

When a communication 
interruption command is delivered 
during transmission or reception, 
<Send/Receive/Poll/Bulletin>

When the operation is interrupted 
by the stop key.

35

Power OFF

When the power is cur off during 
sending or receiving, <Send/
Receive/Poll/Bulletin>

38

Reception 
memory over

When memory is over during 
reception, <Receive/Poll>.

When printing cannot be performed 
during reception due to inhibition of 
proxy reception, <Receive/Poll>

42

Reception 
length over

When the received data length of 
one page exceeds the range during 
reception, <Receive/Poll>

44

Document 
error

When a document jam occurs 
during direct transmission, <Send>

46

No response 
from the other 
party

When the FAX signal from the 
other party is not detected within 
T1 time, <Send/Poll>

48

OK

Communication normal end

49

The other 
party has no 
polling 
function.

When the called side has no polling 
function in polling reception, <Poll>

When the called side has no 
transmission data, <Bulletin>

50

Polling is not 
accepted.

When DCN is received for DTC in 
polling reception, <Poll>

When there is no transmission data 
in polling transmission, <Bulletin>

51

Polling allow 
number 
discrepancy

When the allow number does not 
coincide in polling transmission, 
<Bulletin>
When the system number does not 
coincide in polling transmission, 
<Bulletin>

56

Interface not 
accepted

1) When DCN is received for NSS 

in transmission of the relay 

instruction, <Send>

2) When a receiving station 

number that is not registered is 
instructed in reception of the 

relay instruction, <Receive>

3) When F code relay instruction 

is received during F code relay 
broadcasting, <Receive>

59

The other 
party has no 
function of F 
code bulletin 
board.

When the other party machine 
does not have DIS bit 47 (Selective 
polling function) in F code polling 
(ringing), <Poll>

60

F code polling 
is not 
accepted.

When DCN is received for SEP in F 
code polling (ringing), <Poll>
When there is no transmission data 
for SEP in bulletin board, 
<Bulletin>

61

F code bulletin 
board number 
discrepancy

When the sub address (bulletin 
board number (SEP)) does not 
coincide in bulletin board, 
<Bulletin>

62

F code bulletin 
board 
password 
discrepancy

When the pass code (PWD) does 
not coincide in bulletin board, 
<Bulletin>

63

The other 
party has no 
function of F 
code.

When the other party machine 
does not have DIS bit 49 (sub 
address capacity) in F code 
transmission, <Send>. Check that 
the other party machine conforms 
to F code.

Result code 

(Communica-

tion result)

Communica-

tion report 

result column

Communication interruption 

content

MX-M182 TROUBLE CODE LIST 8-8

• When communication result is OK, the communication result sub code 

1 and sub code 2 are 0000.

• <  > indicates the communication means. <Send>, send; <Receive>, 

receive; <Poll>, polling; <Bulletin>, bulletin board

The status code from the modem in V.34 mode is indicated with the com-
munication result sub code 1 (top 2 digits). However, the communication 
sub code 1 is 00 in communication other than V.34 mode.

64

F code is not 
accepted.

When F code is transmitted, 
<Send>

1) When DCN is received for 

SUB, check the BOX number.

2) When DCN is received for SID, 

check BOX number and the 
pass code.

When F code is received, 
<Receive>
When the F code relay broadcast 
function or the F code confidential 
reception function is inhibited with 
soft switches.

67

F code 
password 
discrepancy

When the pass code (SID) does 
not coincide in F code reception, 
<Receive>

68

BOX NO. NG

When a BOX number that is not 
registered is instructed (SUB 
discrepancy) in F code reception, 
<Receive>

69

Memory over

Memory over in quick online 
sending

Result 

code 2

Communication interruption content

Transmission/

Reception

02

EOL time over

Reception

03

Carrier detection time over

Reception

06

Memory image decoding error

Reception

07

Memory image decoding error

Transmission

08

Time up between frames in phase C

Transmission/
Reception

11

Polarity reversion detection

Reception

12

Invalid command reception

Reception

13

Time over (1min timer/6sec timer)

Reception

14

PUT error

Reception

15

In V.34 mode, time up is generated 
when shifting from Primary to Control.

Reception

16

In V.34 mode, time up is generated 
when shifting from Control to Primary.

Reception

20

Polarity reversion detection

Transmission

21

Invalid command reception

Transmission

22

Fall back retry number over

Transmission

23

Resend over of the number of times of 
command retry

Transmission

24

Time over (T5 timer)

Transmission

25

Time over (T5 timer) in V.34 mode

Transmission

26

Time over occurrence during shift from 
Primary to Control in V.34 mode

Transmission

28

Modem chip answering NG

Transmission/
Reception

Result code 

(Communica-

tion result)

Communica-

tion report 

result column

Communication interruption 

content