Sharp AR-280 Service Manual page 176

Trouble code
Main Sub
code code
U4 02 Content ADU alignment plate operation
abnormality
Detail The plate won't move from home
position more than 1 second after
sending the command to leave home
position. Or the plate won't return to
home position within 5 seconds after
sending the command to return to home
position.
Cause Home position sensor defective
Alignment shift motor defective
Improper connection of harness between
PCU PWB, motor and sensor.
Control PWB (PCU) defective
Alignment plate driving belt or gear
damaged or improperly adjusted
Check Check home position sensor detection
and with SIM9-2.
remedy Check alignment plate operation with
SIM9-4.
Check connection between PCU, motor
and sensor.
Remove ADU and check gear and belt
for damage.
03 Content ADU rear edge plate operation
abnormality
Detail When the plate is not shifted from the
home position for 1 sec or more or when
returning to the home position is not
detected for 5 sec or more.
Cause Home position sensor defect
Rear edge plate shift motor defect
Control PWB (PCU) defect
Rear edge plate operation belt/gear
damage or adjustment error
Check Check the home position sensor
and operation with SIM 9-21.
remedy Check the rear edge plate operation with
SIM 9-31.
Check between the PCU PWB, the
motor, and the sensor.
Remove the ADU and check the gear
and the belt.
U5 00 Content RADF/SPF/RSPF communication trouble
Detail Communication line test error occurs
when power is turned on or after the exit
of a simulation mode.
Improper communication with RADF
Cause Improper connection or broken wire of
connector or harness
RADF control PWB defective
Control PWB (PCU) defective
Malfunction due to noise
Check Check communication line connector
and and harness.
remedy Clear the trouble by turning power
supply On/Off.
01 Content RADF resist sensor trouble
Detail RADF resist sensor detection trouble
Cause Sensor defective
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Check Check resist sensor detection with
and SIM2-2.
remedy Check sensor harness inside RADF.
7/13/2000
Description
Trouble code
Main Sub
code code
U5 02 Content RADF eject/inversion sensor trouble
Detail
Cause
Check
and
remedy
03 Content RADF timing sensor trouble
Detail
Cause
Check
and
remedy
06 Content RSPF post-separation sensor trouble
Detail
Cause
Check
and
remedy
07 Content RSPF read sensor trouble
Detail
Cause
Check
and
remedy
08 Content RSPF SB sensor trouble
Detail
Cause
Check
and
remedy
11 Content RADF paper feed motor operation
Detail
Cause
Check
and
remedy
9 – 8
Description
RADF eject/inversion sensor detection
trouble
Defective sensor
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Check eject/inversion sensor detection
with SIM2-2.
Check sensor harness inside RADF.
RADF timing sensor detection trouble
Defective sensor
Improper connection of sensor harness
inside RADF
RADF control PWB defective
Check timing sensor detection with
SIM2-2.
Check sensor harness inside RADF.
RSPF post-separation sensor detection
trouble (in auto adjustment).
Sensor trouble.
Bad connection of sensor harness in
RSPF.
RSPF control PWB trouble.
Erroneous detection by paper dust.
Check detection of post-separation
sensor with SIM2-2.
Check RSPF sensor harness.
Clean and remove paper dust.
RSPF read sensor detection trouble (in
auto adjustment)
Sensor trouble.
Bad connection of sensor harness in
RSPF.
RSPF control PWB trouble.
Erroneous detection by paper dust.
Check detection of read sensor with
SIM2-2.
Check RSPF sensor harness.
Clean and remove paper dust.
RSPF SB sensor detection trouble (in
auto adjustment)
Sensor trouble.
Bad connection of sensor harness in
RSPF.
RSPF control PWB trouble.
Erroneous detection by paper dust.
Check detection of SB sensor with
SIM2-2.
Check RSPF sensor harness.
Clean and remove paper dust.
abnormality
Paper feed motor driving error
Motor lock
Improper motor speed
Overcurrent to motor
RADF control PWB defective
Check paper feed motor operation with
SIM2-3,4.