SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC571-01

A

Pressure Roller Thermistor (Edge) Disconnection

SC571-05

D

Pressure Roller Thermistor (Edge) Disconnection (Low Power)

 

 

In Machine Condition A, after turning the fusing lamp on, the pressure roller thermistor (edge) (TH4) has detected the temperature of 0°C or below continuously for 40 seconds.

Machine Condition A refers to any of the following conditions:

  • In Warm-up mode
  • At start-up and restart-up
  • Rotation after reload
  • Before/while/after printing
  • In Ready mode
  • In Panel Off mode
  • In Low Power mode
  • Thermopile disconnection
  • Thermistor disconnection
  • Connector error (disconnected, loose)
  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 BICU or the PSU (AC controller board).
  3. Replace the pressure roller thermistor (edge) (TH4).
  4. Replace the fusing unit.
  5. Replace the harness between the fusing unit and the BICU or the PSU (AC controller board).
  6. Replace the BICU (PCB10).
  7. Replace the fusing sleeve belt unit.
  8. Replace the PSU (AC controller board) (PCB9).

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC572-04

A

Pressure Roller Thermistor (Edge) Does Not Reload

SC572-05

D

Pressure Roller Thermistor (Edge) Does Not Reload ( Low Power)

 

 

After starting to print a job with the paper width of 257 mm or more, the pressure roller thermistor (edge) (TH4) has failed to reach 0°C in 100 seconds.

  • Thermistor dirt
  • Thermistor modification/float
  • Outside input voltage guarantee
  • After excessive temperature rise prevention unit operation
  1. Check the power supply voltage and reconnect the cable to the outlet.
  2. Replace the fusing sleeve thermostat.
  3. Replace the fusing sleeve belt unit.
  4. Replace the thermistor.
  5. Replace the BICU (PCB10) or PSU (AC controller board).

SC No.

Type

Error Name/Error Condition/Major Cause/Solution

SC573-00

A

Pressure Roller Thermistor (Edge) High Temperature Detection (software)

The pressure roller thermistor (edge) (TH4) has detected the temperature of 230°C or higher continuously for 1 second.

  • Triac short-circuit
  • IOB board defective
  • BICU board defective
  1. Reconnect the connector.
  2. Clean or replace the thermopile (edge) (TH2).
  3. Replace the harness between the fusing unit and the BICU or the PSU (AC controller board).
  4. Replace the BICU (PCB10).
  5. 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

SC574-00

A

Pressure Roller Thermistor (edge) High Temperature Detection (hardware)

Above 240 degrees C detected

  • Triac short-circuit
  • IOB board defective
  • BICU board defective
  1. Reconnect the connector.
  2. Clean or replace the thermopile (edge) (TH2).
  3. Replace the harness between the fusing unit and the BICU or the PSU (AC controller board).
  4. Replace the BICU (PCB10).
  5. If the problem cannot be solved after performing the above steps, replace the fusing unit.