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Trouble code

Description

Main
code

Sub

code

F1

02

Content Finisher transport motor error

Detail

Transport motor drive trouble

Cause

Motor lock

Check
and
remedy

Check transport motor operation with
SIM3-3.

04

Content Finisher indexer lower limit detected

Detail

Indexer has exceeded lower limit.

Cause

Sensor defective
Finisher control PWB defective

Check
and
remedy

Check sensor with SIM3-2.

05

Content Finisher indexer upper limit detected

Detail

Indexer has exceeded upper limit

Cause

Sensor defective
Finisher control PWB defective

Check
and
remedy

Check sensor with SIM3-2.

06

Content Finisher bin shift motor error

Detail

1) Bin shift is not completed within 2.5
seconds after bin shift request

Cause

Motor lock
Improper motor speed
Overcurrent to motor
Finisher control PWB defective

Check
and
remedy

Check bin shift motor operation with
SIM3-4.

10

Content Staple unit operation trouble

Detail

Staple operation trouble

Cause

Motor lock
Motor rpm abnormality
Motor overcurrent
Finisher control PWB trouble

Check
and
remedy

Check the staple motor operation with
SIM 3-3.

11

Content Pusher motor trouble

Detail

Pusher motor trouble

Cause

Motor lock
Motor rpm abnormality
Motor overcurrent
Finisher control PWB trouble

Check
and
remedy

Check the pusher motor operation with
SIM 3-3.

15

Content Finisher elevator motor trouble

Detail

Elevator motor trouble

Cause

Motor lock
Motor rpm abnormality
Motor overcurrent
Finisher control PWB trouble

Check
and
remedy

Check the elevator motor operation with
SIM 3-3.

Trouble code

Description

Main
code

Sub

code

F1

80

Content Finisher power trouble

Detail

24V power is not supplied to the finisher
PWB.

Cause

Connector harness improper connection
or disconnection
Finisher control PWB trouble
Power unit trouble

Check
and
remedy

Check the sensor operation with SIM 3-2.

F2

00

Content Toner control sensor open

Detail

Toner control sensor output open

Cause

Connector harness trouble
Connector unconnected.

Check
and
remedy

Check connection of the toner control
sensor.
Check connection of the connector
harness with the main PWB.
Check for disconnection of the harness.

02

Content Toner motor connector disconnected

Detail

Connection detection signal with toner
motor is OFF

Cause

Connector harness defective
Connector disconnected

Check
and
remedy

Check toner motor connector for
connection.
Check connector harness to main PWB
for connection.
Check harness for broken wire.

31

Content Process control trouble (OPC base

surface reflection factor is improper)

Detail

Usually the sensor gain is adjusted so
that the output is a certain value, by
reading the drum base surface with the
image density sensor before starting
process control.
However, a certain output is not obtained
by adjusting the sensor gain.

Cause

Image density sensor defective

Check
and
remedy

Check process control sensor output with
SIM44-2. (Do not adjust)
If the result is far different from the
specified value, it suggests the sensor is
defective. Check the sensor and
harness.
If the deviation is relatively small, check
the sensor and drum surface for
contamination.

11 – 3

Trouble code

Description

Main
code

Sub

code

F2

32

Content Process control trouble (drum marking

sensor defective)

Detail

Usually the sensor gain is adjusted so
that the output is a certain value, by
reading the drum base surface with the
drum marking sensor before starting
process control.
However, a certain output is not obtained
by adjusting the sensor gain.

Cause

Drum marking sensor defective
Improper connection of harness between
PCU PWB and drum marking sensor
Drum marking sensor contaminated
OPC drum cleaning improper
Charging voltage improper

Check
and
remedy

Check process control output with
SIM44-02. (Do not adjust.)
If the result is far different from the
specified value, it suggests the sensor is
defective. Check the sensor and
harness.
If the deviation is relatively small, check
the sensor and drum surface for
contamination.

37

Content Drum marking sensor gain adjustment

error

Detail

When the drum marking area surface is
scanned with the drum marking sensor
before starting process control and the
sensor gain ia adjusted until a constant
output is provided, the output is not be
constant though the sensor gain is
changed.

Cause

Drum marking sensor trouble
Improper connection between PCU PWB
and drum marking sensor
Drum marking sensor is dirty
OPC drum cleaning trouble

Check
and
remedy

Perform the gain adjustment of process
control sensor with SIM 44-2.
If ERROR is displayed, it may be a
breakdown. Check the sensor and the
harness.
When the adjustment is completed,
check the drum surface conditions.

F3

12

Content Upper cassette lift-up trouble

Detail

UPED does not turn on within the
specified time.
ULUD does not turn on within the
specified time.

Cause

UPED or ULUD defective
Upper cassette lift-up motor defective
Improper connection of harness between
PCU PWB, lift-up unit, and paper feed
unit.

Check
and
remedy

Check UPED, ULUD and their harness
and connector.
Check lift-up unit.

Trouble code

Description

Main
code

Sub

code

F3

22

Content Lower cassette lift-up trouble

Detail

LPED does not turn on within the
specified time.
LLUD does not turn on within the
specified time.

Cause

LPED or LLUD defective
Lower cassette lift-up motor defective
Improper connection of harness between
PCU PWB, lift-up unit, and paper feed
unit.

Check
and
remedy

Check LPED, LLUD, their harnesses and
connectors.
Check lift-up unit.

H2

00

…

HL1

01

…

HL2

Content Thermister open

Fusing unit not installed

Detail

Thermister is open (more than 4.6-V
input voltage is detected).
Fusing unit not installed

Cause

Thermister defective
Control PWB defective
Improper connection of fusing connector
AC power supply defective
Fusing unit not installed

Check
and
remedy

Check harness and connector between
thermister and control PWB.
Clear the display of self-diagnostics with
SIM14.

H3

00

…

HL1

01

…

HL2

Content Too hot fusing section

Detail

The fusing temperature is over 241.5° C
(less than 1.3-V input voltage is
detected.)

Cause

Thermister defective
Control PWB defective
Improper connection of fusing unit
connector
AC power supply defective

Check
and
remedy

Check heater lamp operation with
SIM5-2.
If lamp blinks properly:
  Check thermister and its harness.
 Check 

thermister 

input 

circuit 

of 

control

PWB.
If lamp lights and stays lit:
  Check lamp control circuits of AC PWB
and control PWB.
Clear the trouble with SIM14.

11 – 4

Trouble code

Description

Main
code

Sub

code

H4

00

…

HL1

01

…

HL2

Content Too cold fusing section

Detail

The temperature does not reach the
preset value within the specified time (3
min. in usual modes; 5 min. in curl
correction mode.) after the power relay is
turned on.

Cause

Thermister defective
Heater lamp defective
Control PWB defective
Thermostat defective
AC power supply defective
Interlock switch defective

Check
and
remedy

Check heater lamp for blinking with
SIM5-2.
If lamp blinks properly:
  Check thermister and its harness.
  Check thermister input circuit of control
PWB.
If lamp does not light:
  Check heater lamp for broken wire and
thermostat for operation.
  Check interlock switch.
  Check lamp control circuit of AC PWB
and control PWB.
Clear the trouble with SIM14.

H5

01

Content 3 continuous POD1 not-reaching JAM

detection

Detail

3 continuous POD1 not-reaching JAM
detection

Cause

Check that the fusing JAM is completely
cancelled. (Jam paper may be
remained.)
POD1 sensor trouble or improper
harness connection
Improper installation of the fusing
harness.

Check
and
remedy

Check JAM paper in the fusing section.
(Winding, etc.)
Check POD1 sensor harness. Check the
fusing unit installation.
Cancel the trouble with SIM 14.

L1

00

Content Scanner field trouble

Detail

Scanner field is not finished within the
specified time. (timer is change by
magnification)

Cause

Mirror unit defective
Scanner wire disconnected

Check
and
remedy

Check scanning operation with SIM1-1.

L3

00

Content Scanner return trouble

Detail

Scanner return is not finished within the
specified time. (timer is change by
magnification)

Cause

Mirror unit defective
Scanner wire disconnected

Check
and
remedy

Check scanning operation with SIM1-1.

Trouble code

Description

Main
code

Sub

code

L4

01

Content Main motor lock detected

Detail

Motor lock signal is detected for 1.5
seconds during main motor rotation

Cause

Main motor defective
Improper connection of harness between
PCU PWB and main motor
Control circuit defective

Check
and
remedy

Check main motor operation with
SIM25-1.
Check harness and connector between
PCU PWB and main motor.

L6

10

Content Polygon motor lock detected

Detail

It was judged that there is no output of
polygon motor lock signal of LSU.
The lock signal was checked at about
10-second intervals after the polygon
motor started rotating. As result, it was
judged that the polygon motor failed to
operate normally.

Cause

Disconnected connecter to LSU or
detached harness inside LSU or broken
wire.
Polygon motor defective

Check
and
remedy

Check polygon motor operation with
SIM61-1.
Check harness and connector for
connection. Replace LSU if needed.

L8

01

Content No full-wave signal

Detail

Full-wave signal is not detected.

Cause

PCU PWB trouble
Power unit trouble

Check
and
remedy

Check connection of the harness and the
connector.
Replace the PCU PWB. 
Replace the power unit.

02

Content Full-wave signal abnormality

Detai

Full-wave signal frequency abnormality
detected.
(The detected frequency: 69Hz or above
or 42.5Hz or below)

Cause

Check for disconnection or improper
connection of the connector of the PCU
PWB and the power PWB harness.
PCU PWB trouble
Power unit trouble

Check
and
remedy

Check connection of the harness and
connector.
Replace the power unit.

11 – 5

Trouble code

Description

Main
code

Sub

code

U4

02

Content ADU alignment plate operation error

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
and
remedy

Check home position sensor detection
with SIM9-2.
Check alignment plate operation with
SIM9-4.
Check connection between PCU, motor
and sensor.
Remove ADU and check gear and belt
for damage.

U5

00

Content RADF/SPF 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.

Trouble code

Description

Main
code

Sub

code

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.

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.

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.

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.

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.

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.

11 – 6