AR-5726/5731 SELF DIAG AND TROUBLE CODE 7 - 6
F9 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.
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.
H2 00 Content Main heater lamp thermistor open hard
detection
Details Main heater lamp thermistor open
detection.
Fusing unit not installed.
Cause Main thermistor defect.
Control PWB failure.
Fusing section connector contact failure.
Fusing unit not installed.
Check
and
remedy
Check the harness and the connector of
the thermistor and the MCU.
Trouble
code
Details of trouble
Main
code
Sub
code
H2 01 Content Sub heater lamp thermistor open hard
detection
Details Fusing sub thermistor open detection.
Fusing unit not installed.
Cause Sub thermistor defect.
Control PWB failure.
Fusing section connector contact failure.
Fusing unit not installed.
Check
and
remedy
Check the harness and the connector of
the thermistor and the MCU.
H3 00 Content Main heater lamp abnormally high
temperature hard detection trouble
Details The fusing main heater thermistor causes
abnormally high temperature
Cause Main thermistor defect.
Control PWB failure.
Fusing section connector contact failure.
Check
and
remedy
Check the main heater lamp blinking with
SIM 5-2-1.
When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
If lamp lights and stays lit:
Check the power circuit and the lamp
control circuit on MCU PWB.
Clear the display of self-diagnostics with
SIM 14.
01 Content Sub heater lamp abnormally high
temperature hard detection trouble
Details The fusing sub thermistor causes
abnormally high temperature
Cause Sub thermistor defect.
Control PWB failure.
Fusing section connector contact failure.
Check
and
remedy
Check the sub heater lamp blinking with
SIM 5-2-2.
When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
If lamp lights and stays lit:
Check the power circuit and the lamp
control circuit on MCU PWB.
Clear the display of self-diagnostics with
SIM 14.
10 Content Main heater lamp abnormally high
temperature soft detection trouble
Details A/D value the fusing main thermistor
causes abnormally high temperature (over
230°C).
Cause Main heater lamp thermistor defect.
Control PWB failure.
Fusing section connector contact failure.
Check
and
remedy
Check the main heater lamp blinking with
SIM 5-2-1.
When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
If lamp lights and stays lit:
Check the power circuit and the lamp
control circuit on MCU PWB.
Clear the display of self-diagnostics with
SIM 14.
Trouble
code
Details of trouble
Main
code
Sub
code
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