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Main
Sub
code
code
L8
01
Content
No full wave signal.
Detail
The zero cross signal is not detected.
Cause
Power unit abnormality.
MCU PWB abnormality.
Check
Check connection of the harness and
and
connectors.
remedy
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
Replace the battery.
and
remedy
U2
04
Content
EEPROM read/write error (Serial
communication error)
Detail
EEPROM access process error
Cause
EEPROM abnormality
Check
Check that the EEPROM is properly set.
and
Use SIM 16 to cancel the trouble.
remedy
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
Check that the EEPROM is properly set.
and
Use SIM 16 to cancel the trouble.
remedy
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
MCU PWB - Panel PWB harness trouble.
and
Replace the panel or the MCU PWB.
remedy
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
MCU PWB - Panel PWB harness trouble.
and
Replace the panel or the MCU PWB.
remedy
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
MCU PWB - Panel PWB harness trouble.
and
Replace the panel or the MCU PWB.
remedy
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
MCU PWB - Panel PWB harness trouble.
and
Replace the panel or the MCU PWB.
remedy
Machine reset (Power OFF/ON).
Details of trouble
MX-M182 TROUBLE CODE LIST 8-6
Main
Sub
code
code
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
MCU PWB - Panel PWB harness trouble.
and
Replace the panel or the MCU PWB.
remedy
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
MCU PWB - Panel PWB harness trouble.
and
Replace the panel or the MCU PWB.
remedy
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
Replace the panel or the MCU PWB.
and
Reset the machine. (Power OFF/ON).
remedy
CH
None Content
Side door open
ON
Detail
The side door is open.
Cause
Side door sensor abnormality
MCU PWB abnormality
Check
Check that all the side doors are closed.
and
Replace the MCU PWB.
remedy
CH
None Content
Developing cartridge not installed
Blink
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
Check installation of the developing unit.
and
Replace the MCU PWB.
remedy
3.Communication result code
Described on the communication report table, the communication man-
agement table, and the protocol communication report table when com-
munication is completed.
A. Composition of communication report code
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.
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.)
Note) Communication report sub code 1 and sub code 2 are in hexadec-
imal. (The others are in decimal.)
Details of trouble
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