SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC551-01

A

Thermopile (Edge) Disconnection

Below -50 degrees C (or below CB) is detected for 0.1sec. continuously.

  • Thermopile disconnection
  • Connector disconnected
  • Harness disconnection inside the main machine
  • BCU defective
  1. Reconnect the connectors (main machine side, BCU side).
  2. Replace the thermopile (edge).
  3. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  4. Replace the BCU.

SC551-02

A

Non-contact Thermistor (Edge) Disconnection

  

Above 3F6B is detected for 1 sec. continuously (NC sensor center: detection & compensation NC sensor edge: detection & compensation).

Detection period: 100 ms, detection frequency: 10 times or more.

  
  • Non-contact thermistor disconnection
  • Connector disconnected
  • Harness disconnection in the fusing unit
  • Harness disconnection inside the main machine
  • BCU defective
  
  1. Reconnect the connectors (between the fusing unit and the BCU). 
  2. Replace the non-contact thermistor with the harness.
  3. Replace the fusing unit.
  4. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  5. Replace the BCU.

SC551-03

A

Non-contact Thermistor (Edge) Short-circuit

  

AD value: Below 8 is detected for 1 sec. continuously.

Detection period: 100 ms, detection frequency: 10 times or more.

  
  • Non-contact thermistor disconnection
  • Connector disconnected
  • Harness disconnection in the fusing unit
  • Harness disconnection inside the main machine
  • BCU defective
  
  1. Reconnect the connectors (between the fusing unit and the BCU).
  2. Replace the non-contact thermistor with the harness.
  3. Replace the fusing unit.
  4. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  5. Replace the BCU.

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC552-02

A

Thermopile (Edge) Does Not Reload

65 degrees C not reached after fusing lamp 1 ON for 14 sec..

SC552-03

A

Thermopile (Edge) Does Not Reload

Heating edge reload permission temperature not reached after fusing lamp 1 ON for 28 sec..

SC552-05

D

Thermopile (Edge) Does Not Reload (Low Power)

  65 degrees C not reached after fusing lamp 1 ON for 14 sec..
SC552-06DThermopile (Edge) Does Not Reload (Low Power)
  

Heating edge reload permission temperature not reached after fusing lamp 1 ON for 28 sec..

  
  • Outside input voltage guarantee
  • Jammed paper between the thermopile and fusing unit
  • Thermopile lens dirt
  • Thermopile deformed or not installed (or mounted) properly
  • After excessive temperature rise prevention unit operation
  • Fusing lamp disconnection
  • Harness disconnection inside the main machine
  • BCU defective
  • AC controller board defective
  1. Check the power supply voltage and reconnect the cable to the outlet.
  2. Remove the jammed paper between the thermopile and fusing unit.
  3. Clean or replace the thermopile (edge).
  4. Replace the fusing sleeve thermostat
  5. Replace the fusing sleeve belt unit.
  6. Reconnect or replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  7. Replace the BCU.
  8. Replace the PSU (AC controller board).

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC553-00

A

Thermopile (Edge) High Temperature Detection (software)

240 degrees C detected for 1 sec. continuously.

Detection period: 100ms, detection count: 10 times or more.

  • Fusing sleeve belt defective

  • Paper setting misdetection

  • Incorrect paper position in the paper feed tray

  • Gear abrasion

  • Thermopile failure

  • Harness disconnection inside the main machine

  • Triac defective (short-circuit)
  • BCU failure
  • AC controller board failure
  1. Inspect the fusing sleeve belt unit, and replace if damaged.
  2. Check the paper settings.

  3. Check the paper position in the paper feed tray.

  4. Reconnect the connectors (between the fusing unit and the BCU).
  5. Inspect or replace the gears inside the main machine or fusing unit.
  6. Replace the thermopile (edge).
  7. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  8. Replace the BCU.

  9. Replace the PSU (AC controller board).

    If the problem cannot be solved after performing the above steps, replace the fusing unit.

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC554-01

A

Thermopile (Edge) high temperature detection (hardware)

In the event of an error

  • Fusing sleeve belt defective

  • Paper setting misdetection

  • Incorrect paper position in the paper feed tray

  • Gear abrasion

  • Pressure roller HP sensor disconnected

  • Thermopile failure

  • Harness disconnection inside the main machine
  • Triac defective (short-circuit)
  • BCU failure
  • AC controller board failure
  1. Inspect the fusing sleeve belt unit, and replace if damaged.
  2. Check the paper settings.

  3. Check the paper position in the paper feed tray.

  4. Reconnect the connectors (between the fusing unit and the BCU).
  5. Inspect or replace the gears inside the main machine or fusing unit.
  6. Inspect the pressure roller HP sensor with SP5-803-047.
  7. Replace the thermopile (edge).
  8. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  9. Replace the BCU.

  10. Replace the PSU (AC controller board).

    If the problem cannot be solved after performing the above steps, replace the fusing unit.

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC554-02

A

Non-contact Thermistor (Edge) high temperature detection (hardware)

In the event of an error

  • Fusing sleeve belt defective

  • Paper setting misdetection

  • Incorrect paper position in the paper feed tray

  • Jammed paper between the thermopile and fusing unit
  • Thermopile lens dirt
  • Thermopile deformed or not installed (or mounted) properly
  • Pressure roller HP sensor disconnected
  • Harness disconnection inside the main machine
  • Triac defective (short-circuit)
  • BCU failure
  • AC controller board failure
  1. Inspect the fusing sleeve belt unit, and replace if damaged.
  2. Check the paper settings.

  3. Check the paper position in the paper feed tray.

  4. Reconnect the connectors (between the fusing unit and the BCU).
  5. Remove the jammed paper between the thermopile and fusing unit.
  6. Clean or replace the thermopile (edge).
  7. Replace the fusing unit.
  8. Inspect the pressure roller HP sensor with SP5-803-047.
  9. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  10. Replace the BCU.

  11. Replace the PSU (AC controller board).

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC555-01

A

Fusing Edge Lamp Continuously Heat

SC555-05DFusing Edge Lamp Continuously Heat (Low Power)
  

After waiting for full power for more than 5 sec. continuously.

  • Definition of fusing lamp full power
    Continuously heating rate set point (maximum heating rate)
  • Measurement start point
    After reload (after fusing lamp extinguished, after rotation complete) below the standby temperature (target temperature), measurement starts after a fusing lamp heat-up request is issued.
  • Measurement stop condition
    Rotation started due to a print signal during measurement or other
  • Maximum heat-up Duty (SP interlinked value) 0% is excluded
  
  • Outside input voltage guarantee
  • Jammed paper between the thermopile and fusing unit
  • Thermopile lens dirt
  • Thermopile deformed or not installed (or mounted) properly
  • After excessive temperature rise prevention unit operation
  • Fusing lamp disconnection
  • BCU defective
  • AC controller board defective
  
  1. Check the power supply voltage and reconnect the cable to the outlet.
  2. Remove the jammed paper between the thermopile and fusing unit.
  3. Clean or replace the thermopile (edge).
  4. Replace the fusing sleeve thermostat.
  5. Replace the fusing sleeve belt unit.
  6. Reconnect or replace the harness between the fusing unit and the BCU or the PSU (AC controller board).
  7. Replace the BCU.
  8. Replace the PSU (AC controller board).

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC557-00

C

Zero Cross Frequency Exceeded

  

In the event of an error

  

Frequency instability of mains power supply /Noise

  

-

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC558-01

C

Low Input Voltage

  

Input voltage below the specification is detected on the mains power supply

  

Low input of mains power supply

  

-

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC559-00

A

Fusing Jam Detected for 3 Times Consecutively

  

Fusing jam (does not reach fusing exit sensor) is detected for 3 times consecutively.

  • Detection conditions
    Displays the SC559-00 at the time of integrating the counter each time fusing jam occurs, became fusing jam counter value = 3.
    The counter value is retained without fusing jam also reset by OFF/ON the power supply.
  • Control ON/OFF
    And enables ON / OFF is this SC, the default is set to OFF, then ON at the time of customer requirements.
    SP1-142-001 0: OFF (default), 1: ON (Set at the time of customer requirements)
  • Counter reset condition occurs fusing jam
    1. Normal paper exit has been done during this continuous fusing jam, fusing jam counter is reset.
    2. When "1" is changed to "0" SP1-142-001, to reset the (SP9-912-001) fusing jam counter.
    3. When after displaying SC559, SC release is made, reset the (SP9912-001) fusing jam counter.
  
  • Stripper plate not mounted properly
  • Gear abrasion
  • Fusing motor failure
  
  1. Inspect or replace the stripper plate.
  2. Replace the gears inside the main machine or fusing unit.
  3. Replace the fusing motor.
  4. Replace the fusing unit.