Sharp AR-5127 Service Manual page 73

Trouble
code
Main Sub
code code
F9 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 trouble/Data
disturbance
Check Check the connectors and harness of the
and printer PWB and MCU PWB.
remedy 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 trouble/Data
disturbance
Check Check the connectors and harness of the
and printer PWB and MCU PWB.
remedy Check the grounding of the copier.
Check ROM on printer PWB.
88 Content Printer PWB communication trouble
(Timeout)
Details Communication trouble between MCU and
printer PWB (Timeout error)
Cause Printer PWB connector disconnection
Harness trouble between the printer PWB
and the MCU PWB
Motherboard connector pin breakage
Printer PWB ROM trouble/Data
disturbance
Check Check the connectors and harness of the
and printer PWB and MCU PWB.
remedy Check the grounding of the copier.
Check ROM on printer PWB.
99 Content Machine-PCL board 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 Check the firmware of the PCL board and
and the combination of the panel screen data,
remedy and download the correct version, if
necessary.
Check the machine language information.
(Machine language setup: SIM 26-22)
H2 00 Content Thermistor open detection
Details Thermistor open detection
Fusing unit not installed
Cause Thermistor defect
Control PWB failure
Fusing section connector contact failure
Fusing unit not installed
Check Check the harness and the connector of
and the thermistor and the MCU.
remedy Clear the display of self-diagnostics with
SIM 14.
Remarks Thermistor open
Details of trouble
AR-5127 TROUBLE CODE LIST 9 - 6
Trouble
code
Main Sub
code code
H3 00 Content Heat roller abnormally high temperature
Details The fusing temperature is over 220°C.
Cause Thermistor defect
Control PWB failure
Fusing section connector contact failure
Check Check the heater lamp blinking with SIM 5-
and 2.
remedy 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 PWB and the MCU PWB
lamp control circuit.
Clear the display of self-diagnostics with
SIM 14.
H4 00 Content Heat roller abnormally low temperature
Details The setup temperature (about 90°C is not
reached within the specified time (about
35sec) from turning on the power ON SW.
(When the temperature falls below 120°C
in the standby mode.)
Cause Thermistor defect
Heater lamp failure
Thermostat failure
Control PWB failure
Check Check the heater lamp blinking with SIM 5-
and 2.
remedy When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
When the lamp does not light:
Check for disconnection of the heater
lamp and thermostat.
Check the interlock switch.
Check the power PWB and the MCU PWB
lamp control circuit.
Clear the display of self-diagnostics with
SIM 14.
H5 01 Content 5 continuous T10D(T20D) not-reaching
JAM
Details T10D(T20D) not-reaching JAM was
detected 5 continuous times.
Cause The fusing JAM is not completely
removed. (Jam paper remains.)
T10D or T20D sensor breakdown or
harness connection trouble
Fusing unit installation failure
Check Check for jam paper in the fusing section.
and (paper winding, etc.)
remedy Check fusing unit installation
Clear the trouble with SIM 14.
02 Content Fusing thermistor abnormality detect
Details Fusing thermistor temperature transient
abnormality (Paper winding)
Cause Paper wound around the fusing roller.
Fusing pawl abnormality
Fusing unit installation failure
Check Check for jam paper in the fusing section.
and (paper winding, etc.)
remedy Check installation of the fusing unit. Check
the fusing pawl.
Clear the trouble with SIM 14.
Details of trouble