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MX-7000N  SELF DIAG AND TROUBLE CODE  8 – 3

{

: Operation enabled, ✕: Operation disabled

U 1: The operation is enabled in a line other than the trouble line.
U 3: When detected during other than a job, the operation is enabled with a tray other than the trouble tray.
U 4: When detected during other than a job, the operation is enabled in a section other than the trouble paper exit section.
U 5: When detected during other than a job, the operation is enabled in a section other than the inserter connection paper exit port.
U 6: When detected during other than a job, the operation is enabled in the OC mode.
U 7: When detected during other than a job, the operation is enabled in the single surface scan mode.
* 9: When the color mode is set to Disable in the "Color mode disable setting" of the system setting, the operation is enabled in the Black
mode. 
* 10: Since communication is enabled, reception can be transferred.
* 12: Trouble display message is displayed in 2 lines. (Example: Ready to copy. F2 trouble)
* 13: When FIERY option is installed, PCL will not operate. (Machine specifications) (Exclusive)
* 14: Only FIERY option list print (self print) is disabled.
* Trouble mode process
• Machine operation enabled under some conditions.

The operations excluding the trouble mode are enabled (READY). For the mode where operations are disabled, only setting is enabled and
the operation disable message is made.
(NOT READY)
(Display) A dialog is displayed when a trouble occurs. For the mode where operations are enabled, [OK] button is added to the message.
When operations are disabled, [OK] button is not displayed, and the message is displayed until the trouble is cancelled.
* For U 1, 3, 5, 6, 7, perform the following procedures. (In order to avoid patent interference.)
• When a trouble is detected during a job, the machine operation is terminated. (Trouble display/without [OK] key)
• When a trouble is detected during other than a JOB, the trouble display is not made and the trouble position cannot be selected. (The dis-

play is not turned off. Machine/Button)

• Troubles which disable the machine operations

The trouble display is always made, and all the modes cannot be set.

• Writing to the trouble memory

Writing of a same trouble to the trouble memory can be selected with SIM26-35. When this simulation is set, any trouble is written to the trou-
ble memory unconditionally.
(Sim26-35)
0: Only once. If same as the previous one, it is not saved. (Default)
1: Any time. Though same as the previous one, it is saved.

Connection trouble (SCU 
detection)

SCU

E7 (70, 75), 
A0 (22)

✕

✕

✕

✕

✕

✕

✕

✕

✕

SCU color system 
troubles

UC (02)

✕

✕

✕

✕

✕

{

{

{

{

Document control trouble

UC (20)

✕

✕

✕

✕

✕

{

{

{

{

EEPROM system

U2 (80, 81)

✕

✕

✕

✕

✕

{

{

{

{

Scanner section troubles 
(mirror motor, lens, copy 
lamp)

L1, L3

✕

✕

✕

✕

✕

{

{

{

{

CCD troubles (shading, 
etc.)

E7 (10, 11, 14)

✕

✕

✕

✕

✕

{

{

{

{

DSPF trouble

U5

U 6

U 6

U 6

U 6

U 6

{

{

{

{

DSPF back surface CCD 
troubles (shading, etc.)

E6 (10, 11, 14)

U 7

U 7

U 7

U 7

U 7

{

{

{

{

Process control trouble 
(Only history is left.) (MFP 
detection)

MFP

F2 (80 – 87, 90)

{

{

{

{

{

{

{

{

{

Process control trouble 
(Only history is left.) (PCU 
detection)

PCU

F2 (92 – 94)

{

{

{

{

{

{

{

{

{

MX-7000N  SELF DIAG AND TROUBLE CODE  8 – 4

• When the power is turned ON and each trouble of H3, H4, H5, U1, U2, U6 (09) is stored, it is judged as a trouble immediately.
* For A0 and E7 troubles (connection troubles), only the connection trouble information is saved, and they are not regarded as save troubles.

(There is no way to delete the communication trouble information.) (Detected every time when the power is turned ON.)

A0

01

PCU ROM abnormality

MFP

●

02

SCU ROM abnormality

MFP

●

10

Controller ROM error

MFP

●

11

IF version discrepancy (CTL-PCU)

MFP

●

12

IF version discrepancy (CTL-SCU)

MFP

●

20

Machine level error (CTL detection)

MFP

●

21

Machine level error (PCU detection)

PCU

●

22

Machine level error (SCU detection)

SCU

●

C1

01

Charger cleaner trouble

PCU

●

02

Charger cleaner motor lock

PCU

●

C4

00

PTC (Pre-Transfer Charger) high voltage output trouble

PCU

●

01

PTC (Pre-Transfer Charger) cleaner trouble

PCU

●

CE

00

Communication error other than CE-01 – 08

The trouble 
code is not 
displayed, 
but only the 
message for 
each trouble 
is displayed.

MFP

●

01

Network controller trouble

MFP

●

02

Not-specified mail/FTP server error

MFP

●

03

Communication error in image send 

MFP

●

04

FTP server account name or authentication password input 
error

MFP

●

05

FTP server directory input error

MFP

●

06

POP3 server access error

MFP

●

07

POP3 server authentication check error 

MFP

●

08

POP3 server timeout error 

MFP

●

E6

10

Back-face shading trouble (Black correction) (DSPF)

SCU

●

11

Shading trouble (White correction) (DSPF)

SCU

●

14

Back-face SCAN-ASIC trouble (DSPF)

SCU

●

E7

00

System memory access error

MFP

●

01

System data trouble

MFP

●

03

HDD trouble

MFP

●

04

HDD-ASIC trouble (DSK model only)

MFP

●

05

Local memory access error

MFP

●

(To the corresponding
block)

MFP event

manager

Communication of trouble status
[Trouble code] [Trouble status]

sim task

Trouble cancel command

Trouble cancel status is communicated.

Each block

When the power is turned on,
check is made in each block.

Trouble cancel
(The trouble memory is
initialized.)

·

H3, H4, U1, U2, U6 trouble check

·

When executing SIM 13, 14, 15, 16

Trouble check is made in each block when initializing
and data are sent to the MFPcnt.

H3, H4, H5: Saved in the MFPcnt.
U1: Saved in the MFPcnt.
U2: Saved in each block.
U6-09: Saved in the PCU.

SIM 13: U1 trouble cancel
SIM 14: H3, H4, H5 (Color mode

cancel)

SIM 15: LCC (U6) trouble cancel
SIM 16: U2 trouble cancel

MX-7000N  SELF DIAG AND TROUBLE CODE  8 – 5

E7

06

Decode error trouble: Compression decode error 
(A compression file cannot decompressed.)

MFP

●

09

Local memory combination error

MFP

●

10

Shading trouble (Black correction)

SCU

●

11

Shading trouble (White correction)

SCU

●

14

SCAN-ASIC trouble

SCU

●

20

LSU BD detection trouble

PCU

●

21

LSU LD deterioration trouble

PCU

●

28

LSU control ASIC connection abnormality

PCU

●

29

LSU-ASIC frequency abnormality

PCU

●

50

Engine connection trouble

PCU

●

60

Controller connection trouble (Engine detection)

MFP

●

61

Controller connection trouble (Engine)

MFP

●

62

Controller connection trouble (Scanner)

MFP

●

65

PWB information sum error (Controller detection)

MFP

●

70

Scanner connection trouble

SCU

●

75

PWB information sum error (Scanner detection)

SCU

●

80

Communication trouble between the MFP and the scanner 
(MFP detection)

MFP

●

90

Communication trouble between the MFP and the PCU 
(MFP detection)

MFP

●

EE

EC

Auto developer adjustment trouble (The sample level for 
every rotation is other than 128 

± 10.)

PCU

●

EL

Auto developer adjustment trouble (Overtoner abnormality)

PCU

●

EU

Auto developer adjustment trouble (Under-toner 
abnormality)

PCU

●

F1

00

Finisher communication trouble (Machine side detection)

PCU

●

03

Finisher oscillation motor trouble

PCU

●

08

Finisher stapler shift motor trouble

PCU

●

10

Finisher staple motor abnormality

PCU

●

15

Finisher tray lift motor abnormality

PCU

●

19

Finisher pre-alignment motor abnormality

PCU

●

20

Finisher after-alignment motor abnormality

PCU

●

21

Finisher interface fan motor abnormality

PCU

●

22

Finisher rear edge assist motor trouble

PCU

●

23

Shutter trouble

PCU

●

30

Communication trouble between the finisher and the saddle

PCU

●

31

Finisher folding motor trouble

PCU

●

32

Communication trouble between the finisher and the punch 
unit

PCU

●

33

Finisher punch shift motor trouble

PCU

●

34

Finisher punch motor trouble

PCU

●

37

Finisher backup RAM trouble

PCU

●

38

Finisher punch backup RAM trouble

PCU

●

41

Positioning plate motor trouble

PCU

●

42

Guide motor trouble

PCU

●

43

Side alignment motor trouble

PCU

●

44

Stitch motor rear trouble

PCU

●

45

Stitch motor front trouble

PCU

●

46

Paper pushing motor trouble

PCU

●

50

Finisher incompatibility trouble

PCU

●

51

Sensor connector connection trouble

PCU

●

52

Micro SW trouble

PCU

●

60

Communication trouble between the finisher and the 
inserter

PCU

●

61

Inserter EEPROM trouble

PCU

●

62

Inserter reverse sensor trouble

PCU

●

F2

02

Toner supply abnormality (K2)

PCU

●

04

Toner cartridge improper (K2)

PCU

●

05

Toner cartridge CRUM error (K2)

PCU

●

39

Process thermistor trouble

PCU

●

40

Toner empty sensor abnormality (K)

PCU

●

41

Toner empty sensor abnormality (C)

PCU

●

42

Toner empty sensor abnormality (M)

PCU

●

43

Toner empty sensor abnormality (Y)

PCU

●

44

Black exclusive image density sensor trouble (Transfer belt 
surface reflection ratio abnormality)

PCU

●

45

Color exclusive image density sensor trouble (Calibration 
plate surface reflection ratio abnormality)

PCU

●

49

LSU thermistor trouble

PCU

●

MX-7000N  SELF DIAG AND TROUBLE CODE  8 – 6

F2

50

K phase sensor sensing trouble

PCU

●

51

CL phase sensor sensing trouble (C)

PCU

●

52

CL phase sensor sensing trouble (M)

PCU

●

53

CL phase sensor sensing trouble (Y)

PCU

●

58

Process humidity sensor trouble

PCU

●

64

Toner supply abnormality (K)

PCU

●

65

Toner supply abnormality (C)

PCU

●

66

Toner supply abnormality (M)

PCU

●

67

Toner supply abnormality (Y)

PCU

●

70

Toner cartridge improper (K)

PCU

●

71

Toner cartridge improper (C)

PCU

●

72

Toner cartridge improper (M)

PCU

●

73

Toner cartridge improper (Y)

PCU

●

74

Toner cartridge CRUM error (K)

PCU

●

75

Toner cartridge CRUM error (C)

PCU

●

76

Toner cartridge CRUM error (M)

PCU

●

77

Toner cartridge CRUM error (Y)

PCU

●

78

Registration exclusive image density sensor trouble 
(Transfer belt surface reflection ratio abnormality)

PCU

●

80

Half tone process control 1st patch reference value trouble 
(K)

MFP

●

81

Half tone process control 1st patch reference value trouble 
(C)

MFP

●

82

Half tone process control 1st patch reference value trouble 
(M)

MFP

●

83

Half tone process control 1st patch reference value trouble 
(Y)

MFP

●

84

Half tone process control 2nd patch reference value trouble 
(K)

MFP

●

85

Half tone process control 2nd patch reference value trouble  
(C)

MFP

●

86

Half tone process control 2nd patch reference value trouble 
(M)

MFP

●

87

Half tone process control 2nd patch reference value trouble 
(Y)

MFP

●

92

High-density process control density correction error (C)

PCU

●

93

High-density process control density correction error (M)

PCU

●

94

High-density process control density correction error (Y)

PCU

●

F3

12

Tray 1 lift-up trouble

PCU

●

22

Tray 2 lift-up trouble

PCU

●

32

Tray 3 lift-up trouble

PCU

●

42

Tray 4 lift-up trouble

PCU

●

F6

00

Communication trouble between the MFP and the FAX

Refer to FAX manual for details

01

FAX board EEPROM read/write error

04

FAX MODEM operation trouble

21

Combination error between the TEL/LIU PWB and the FAX 
soft switch

30

Access error to power controller on the FAX board (FAX 
detection)

97

FAX PWB incompatibility trouble

98

Combination error between the FAX-BOX PWB destination 
information and the machine destination information.

F9

00

Communication trouble between the controller and the 
printer controller (FIERY option)

MFP

●

H2

00

Detection thermistor open (TH1_AD2) of the non-contact 
thermistor

PCU

01

Lower thermistor open (TH_LM)

PCU

●

02

Sub thermistor open (TH_US)

PCU

●

03

Non-contact thermistor compensation thermistor open 
(TH1_AD1)

PCU

●

04

External heating thermistor open (TH_EX1)

PCU

●

05

Fusing external heating thermistor open (TH_EX2)

PCU

●

H3

00

Fusing section high temperature trouble (TH_UM)

PCU

●

01

Fusing section high temperature trouble (TH_LM)

PCU

●

02

Sub thermistor fusing section high temperature trouble 
(TH_US)

PCU

●

04

External heating thermistor high temperature trouble 
(TH_EX1)

PCU

●

05

Fusing external thermistor high temperature trouble 
(TH_EX2)

PCU

●

H4

00

Fusing section low temperature trouble (TH_UM_AD2)

PCU

●