Trouble code
Description
Main
code
Sub
code
U5 00 Content RADF 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
and
remedy
Check communication line connector and
harness.
Clear the trouble by turning power supply
On/Off.
U5 01 Content RADF resist sensor defective
Detail RADF resist sensor detection trouble
Cause Sensor defective
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Check
and
remedy
Check resist sensor detection with SIM2-2.
Check sensor harness inside RADF.
U5 02 Content RADF eject/inversion sensor defective
Detail RADF eject/inversion sensor detection
trouble
Cause Defective sensor
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Check
and
remedy
Check eject/inversion sensor detection
with SIM2-2.
Check sensor harness inside RADF.
U5 03 Content RADF timing sensor defective
Detail RADF timing sensor detection trouble
Cause Defective sensor
Improper connection of sensor harness
inside RADF
RADF control PWB defective
Check
and
remedy
Check timing sensor detection with SIM2-2.
Check sensor harness inside RADF.
U5 11 Content Paper feed motor operation error
Detail Paper feed motor driving error
Cause Motor lock
Improper motor speed
Overcurrent to motor
RADF control PWB defective
Check
and
remedy
Check paper feed motor operation with
SIM2-3,4.
U5 12 Content RADF transport motor operation error
Detail RADF transport motor driving error
Cause Motor lock
Improper motor speed
Overcurrent to motor
RADF control PWB defective
Check
and
remedy
Check paper feed motor operation with
SIM2-5,6.
Trouble code
Description
Main
code
Sub
code
U6 00 Content Desk communication trouble
Detail Failed communication with desk
Communication line test error occurs when
power is turned on or after the exit of a
simulation mode.
Cause Improper connection or broken wire of
connector or harness
Desk control PWB defective
Control PWB (PCU) defective
Malfunction due to noise.
Check
and
remedy
Clear the trouble by turning the power
supply On/Off.
Check communication line connector and
harness.
U6 01 ∼
03
Content Desk 1, 2 and 3 CS lift-up trouble
Detail Desk cassette lift-up trouble (1st - 3rd
cassettes).
Cause Defective sensor
RADF control PWB defective
Broken gear
Lift-up motor defective
Check
and
remedy
Check lift-up sensor detection with SIM4-2.
U6 08 Content Desk 24-V power supply error
Detail No supply of DC24V to desk
Cause Improper connection or broken wire of
connector or harness
Desk control PWB defective
Power supply unit defective
Check
and
remedy
Check power supply line connector and
harness.
Check 24-V voltage on power supply unit
and desk control PWB.
U6 10 Content Desk transport motor trouble
Detail Desk transport motor operation trouble
Cause Motor lock
Improper motor speed
Overcurrent to motor
RADF control PWB defective
Check
and
remedy
Check transport motor operation with
SIM4-6.
CC Content Improper adjustment of document detection
Detail Document detection sensor trouble
Cause When SIM1-2 is executed, the sensor’s
light receiving level for each document size
does not agree with the setting.
Check
and
remedy
Clear the trouble by turning the power
supply On/Off.
Check document detection lighting section
height.
9 – 97
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