MX-M260/M310/M260N/M310N  SELF DIAG AND TROUBLE CODE 7 - 6
F9 00 Content Printer PWB communication trouble
Details Communication trouble between MCU and 
printer PWB
Cause Printer PWB connector disconnection.
Harness trouble between the printer PWB 
and the MCU PWB.
Motherboard connector pin breakage.
Printer PWB ROM defect/Data failure.
Check 
and 
remedy
Check the connectors and the harness of 
the printer PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on printer PWB.
10 Content Printer PWB trouble
Details Printer PWB abnormality
Cause Printer PWB defect
Check 
and 
remedy
Replace the printer PWB
80 Content Printer PWB communication trouble 
(Protocol)
Details Communication trouble between MCU and 
printer PWB (Protocol error)
Cause Printer PWB connector disconnection.
Harness trouble between the printer PWB 
and the MCU PWB.
Motherboard connector pin breakage.
Printer PWB ROM defect/Data failure.
Check 
and 
remedy
Check the connectors and the harness of 
the printer PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on printer PWB.
81 Content Printer PWB communication trouble 
(Parity)
Details Communication trouble between MCU and 
printer PWB (Parity error)
Cause Printer PWB connector disconnection.
Harness trouble between the printer PWB 
and the MCU PWB.
Motherboard connector pin breakage.
Printer PWB ROM defect/Data failure.
Check 
and 
remedy
Check the connectors and the harness of 
the printer PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on printer PWB.
82 Content Printer PWB communication trouble 
(Overrun)
Details Communication trouble between MCU and 
printer PWB (Overrun error)
Cause Printer PWB connector disconnection.
Harness trouble between the printer PWB 
and the MCU PWB.
Motherboard connector pin breakage.
Printer PWB ROM defect/Data failure.
Check 
and 
remedy
Check the connectors and the harness of 
the printer PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on printer PWB.
Trouble 
code
Details of trouble
Main 
code
Sub 
code
F9 84 Content Printer PWB communication trouble 
(Framing)
Details Communication trouble between MCU and 
printer PWB (Framing error)
Cause Printer PWB connector disconnection.
Harness trouble between the printer PWB 
and the MCU PWB.
Motherboard connector pin breakage.
Printer PWB ROM defect/Data failure.
Check 
and 
remedy
Check the connectors and the harness of 
the printer PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on printer PWB.
88 Content Printer PWB communication trouble 
(Time-out)
Details Communication trouble between MCU and 
printer PWB (Time-out error)
Cause Printer PWB connector disconnection.
Harness trouble between the printer PWB 
and the MCU PWB.
Motherboard connector pin breakage.
Printer PWB ROM defect/Data failure.
Check 
and 
remedy
Check the connectors and the harness of 
the printer PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on printer PWB.
96 Content MCU and PCL PWB communication 
versions discrepancy error
Details Incompatible PCL PWB was installed to 
the copier
Cause Different PCL PWB was installed.
Check 
and 
remedy
Install the MX-PB12 to the copier
99 Content Printer PWB language error
Details The machine language setup does not 
coincide with the PCL board language 
setup.
Cause PCL board connection error.
SIM setup error.
Check 
and 
remedy
Check combination between the firmware 
on PCL board and the panel screen data, 
and download the correct version, if 
necessary. 
Check the machine language information. 
(Machine language setup: SIM 26-22)
Trouble 
code
Details of trouble
Main 
code
Sub 
code