Sharp AR-5316 Service Manual page 27

Main Sub
code code
F5 02 Content Copy lamp lighting abnormality
Detail The copy lamp does not turn on.
Cause Copy lamp abnormality
Copy lamp harness abnormality
CCD PWB harness abnormality.
Check Use SIM 5-3 to check the copy lamp
and operations.
remedy
When the copy lamp lights up.
Check the harness and the connector between
the CCD unit and the MCU PWB.
When the copy lamp does not light up.
Check the harness and the connector between
the copy lamp unit and the MCU PWB.
Replace the copy lamp unit.
Replace the MCU PWB. "
H2 00 Content Thermistor open
Detail The thermistor is open.
The fusing unit is not installed.
Cause Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection
The fusing unit is not installed.
Check Check the harness and the connector between
and the thermistor and the PWB.
remedy Use SIM 14 to clear the self diagnostic display.
H3 00 Content Heat roller high temperature detection
Detail The fusing temperature exceeds 240C°.
Cause Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection.
Check Use SIM 5-02 to check the heater lamp blinking
and operation.
remedy
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp keeps ON.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic display.
Details of trouble
AR-5316 TROUBLE CODE LIST 9-3
Main Sub
code code
H4 00 Content Heat roller low temperature detection
Detail When the fusing temperature is lower than
150C° after 55sec from the start of warming
up.
When the warming up complete temperature is
not reached in 30sec from reaching 150C°.
When the fusing temperature is lower than
100C° after 20sec from ready start.
When the fusing temperature is lower than
145C° when printing."
Cause Thermistor abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality
Check Use SIM 5-02 to check the heater lamp blinking
and operation.
remedy
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and
the thermostat. Check the interlock switch.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic display.
L1 00 Content Scanner feed trouble
Detail The scanner does not complete feeding in the
specified time.
Cause Mirror unit abnormality
The scanner wire is disconnected.
The origin detection sensor abnormality
Mirror motor harness abnormality
Check Use SIM 1-1 to check the mirror reciprocating
and operations.
remedy
When the mirror does not feed.
Check for disconnection of the scanner wire.
Check the harness and the connector between
the mirror motor and the MCU PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use SIM 1-2 to check the mirror home position
sensor."
L3 00 Content Scanner return trouble
Detail The scanner does not complete returning in
the specified time.
The mirror is not in the home position when OC
copying is started with the mirror standby in the
home position.
Cause Mirror unit abnormality
Scanner wire disconnection
Origin detection sensor abnormality
Mirror motor harness abnormality
Check Use SIM 1-1 to check the mirror reciprocating
and operations.
remedy
When the mirror does not return.
Check for disconnection of the scanner wire.
Check the harness and the connector between
the mirror motor and the MCU PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use SIM 1-2 to check the mirror home position
sensor.
Details of trouble