SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC581-01

A

Pressure Roller Thermistor (Full-bleed edge) Thermistor Disconnection

SC581-05

D

Pressure Roller Thermistor (Full-bleed edge) Disconnection (Low Power)

Below 0 degree C detected for 40 sec. continuously. Detection period: 0.1 sec, detection count: 10 times or more.

 Thermistor disconnection

 Connector disconnected

 Harness disconnection in the fusing unit

 Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board)

 BCU defective

 Fusing lamp defective

 AC controller board defective

1. Check the power supply voltage and reconnect the cable to the outlet. (-05 only)

2. Reconnect the connectors (between the fusing unit and the BCU or the PSU (AC controller board).

3. Replace the thermistor.

4. Replace the fusing unit.

5. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).

6. Replace the BCU.

7. Replace the fusing sleeve belt unit.

8. Replace the PSU (AC controller board).

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC582-04

A

Pressure Roller Thermistor (Full-bleed edge) Does Not Reload

SC582-05

D

Pressure Roller Thermistor (Full-bleed edge) Does Not Reload (Low Power)

After starting continuous job with paper width of 257 mm or more, does not reach 0 degrees C after 100 sec.

 Outside input voltage guarantee

 Thermistor dirt

 Thermistor modification/float

 After excessive temperature rise prevention unit operation

 Fusing lamp disconnection

 Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board)

 Thermopile defective

 BCU defective

 AC controller board defective

1. Check the power supply voltage and reconnect the cable to the outlet.

2. Clean or replace the thermistor.

3. Replace the fusing sleeve thermostat.

4. Replace the fusing sleeve belt unit.

5. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board).

6. Replace the thermopile (edge).

7. Replace the BCU.

8. Replace the PSU (AC controller board).

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC583-00

A

Pressure Roller Thermistor (Full-bleed edge) High Temperature Detection (software)

Above 230 degrees C detected for 1 sec continuously. Detection period: 0.1 sec, detection count: 10 times or more.

 Paper setting misdetection

 Incorrect paper position in the paper feed tray

 Jammed paper between the thermopile and fusing unit

 Thermopile lens dirt.

 Thermopile modification/float

 Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board)

 Triac defective (short-circuit)

 BCU failure

 AC controller board failure

1. Check the paper settings.

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

3. Reconnect the connectors (main machine side, BCU side).

4. Remove the jammed paper between the thermopile and fusing unit.

5. Clean or replace the thermopile (edge).

6. 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).

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

SC584-00

A

Pressure Roller Thermistor (Full-bleed edge) High Temperature Detection (hardware)

Above 240 degrees C detected

 Paper setting misdetection

 Incorrect paper position in the paper feed tray

 Jammed paper between the thermopile and fusing unit

 Thermopile lens dirt

 Thermopile modification/float

 Pressure roller HP sensor disconnected

 Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board)

 Triac defective (short-circuit)

 BCU failure

 AC controller board failure

1. Check the paper settings.

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

3. Reconnect the connectors (main machine side, BCU side).

4. Remove the jammed paper between the thermopile and fusing unit.

5. Clean or replace the thermopile (edge).

6. Inspect the pressure roller HP sensor with SP5-803-047.

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.