SC501-01 to SC589-02

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC501-01	B	1st Tray Lift Error
		The machine detects the error of the 1st paper feed tray lift motor 3 times consecutively when the 1st paper feed tray is lifted. (The message of resetting the tray is displayed when the machine detects the error consecutively 2 times or less.)
		1st paper feed tray limit sensor connector disconnection, malfunction or sensor's dirt. 1st paper feed tray lift motor connector disconnection, malfunction Foreign matter, such as paper scrap, is caught between the paper feed tray and the paper feed tray lift motor. Paper set fault
		Reset the paper. Remove the foreign matter (1st paper feed tray limit sensor, 1st paper feed tray lift motor). Check the harness. Reset or replace the connector. Replace the 1st paper feed unit and 1st paper feed tray. Replace the BCU.
SC501-02	B	1st Tray Lowering Error
		The machine detects the error of the 1st paper feed tray lift motor 5 times consecutively when the 1st paper feed tray is lowered. (The message of resetting the tray is displayed when the machine detects the error consecutively 4 times or less.)
		1st paper feed tray limit sensor connector disconnection, malfunction or sensor's dirt. 1st paper feed tray lift motor connector disconnection, malfunction Foreign matter, such as paper scrap, is caught between the paper feed tray and the paper feed tray lift motor. Paper set fault Paper overload
		Reset the paper. Remove the foreign matter (1st paper feed tray limit sensor, 1st paper feed tray lift motor). Check the harness. Reset or replace the connector. Replace the 1st paper feed unit, 1st paper feed tray. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC502-01	B	2nd Tray Lift Error
		The machine detects the error of the 2nd paper feed tray lift motor 3 times consecutively when the 2nd paper feed tray is lifted. (The message of resetting the tray is displayed when the machine detects the error consecutively 2 times or less.)
		2nd paper feed tray limit sensor connector disconnection, malfunction, dirt 2nd paper feed tray lift motor connector disconnection, malfunction Foreign matter, such as paper scrap, is caught between the paper feed tray and the paper feed tray lift motor Paper set fault
		Reset the paper. Remove the foreign matter (2nd paper feed tray limit sensor, 2nd paper feed tray lift motor). Check the harness. Reset or replace the connector. Replace the 2nd paper feed unit, 2nd paper feed tray. Replace the BCU.
SC502-02	B	2nd Tray Lowering Error
		The machine detects the error of the 2nd paper feed tray lift motor 5 times consecutively when the 2nd paper feed tray is lowered. (The message of resetting the tray is displayed when the machine detects the error consecutively 4 times or less.)
		The 2nd paper feed tray limit sensor connector disconnection, malfunction, and dirt 2nd paper feed tray lift motor connector disconnection, malfunction Foreign matter, such as paper scrap, is caught between the paper feed tray and the paper feed tray lift motor Paper set fault Paper overload
		Reset the paper. Remove the foreign matter (2nd paper feed tray limit sensor, 2nd paper feed tray lift motor). Check the harness. Reset or replace the connector. Replace the 2nd paper feed unit, 2nd paper feed tray. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC503-01	B	3rd Tray Lift Error (D694)
		The machine detects the lift error of the tray lift motor for the PFU (D694) 3 times consecutively when the 3rd paper feed tray is lifted at the machine’s initialization. (The message of resetting the tray is displayed when the machine detects the error consecutively 2 times or less.)
		Tray lift motor connector disconnected Limit sensor harness disconnected or broken Control board defective Foreign matter, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set fault
		Reset the paper. Remove the foreign matter. Replace the tray lift motor. Reset the connector. Replace the harness. Replace the limit sensor. Replace the control board for the optional PFU (D694). Replace the tray. Replace the paper feed roller. Replace the pick-up arm.
SC503-02	B	3rd Tray Lowering Error (D694)
		The machine detects the lowering error of the tray lift motor for the PFU (D694) 5 times consecutively when the 3rd tray is lowered at the machine’s initialization. (The message of resetting the tray is displayed when the machine detects the error consecutively 4 times or less.)
		Tray lift motor connector disconnected Limit sensor harness disconnected or broken Controller board defective Paper overload Foreign matter, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set fault
		Reset the paper. Remove the foreign matter. Replace the tray lift motor. Reset the connector. Replace the harness. Replace the limit sensor. Replace the controller board for the optional PFU (D694). Replace the tray. Replace the paper feed roller. Replace the pick-up arm.
SC503-11	B	3rd Tray Lift Error (D787)
		The machine detects the lift error of the tray lift motor for the PFU (D787) 3 times consecutively when the 3rd tray is lifted at the machine’s initialization. (The message of resetting the tray is displayed when the machine detects the error consecutively 2 times or less.)
		Tray lift motor connector disconnected Upper limit sensor harness disconnected or broken Controller board defective Foreign matter, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set fault
		Reset the paper. Remove the foreign matter. Replace the tray lift motor. Reset the connector. Replace the harness. Replace the upper limit sensor. Replace the controller board for the optional PFU (D787). Replace the tray. Replace the paper feed roller. Replace the pick-up arm.
SC503-12	B	3rd Tray Lowering Error (D787)
		The machine detects the lowering error of the tray lift motor for the PFU (D787) 3 times consecutively when the 3rd tray is lowered at the machine’s initialization. (The message of resetting the tray is displayed when the machine detects the error 2 times consecutively.)
		Tray lift motor connector disconnected Upper limit sensor harness disconnected or broken Controller board defective Paper overload Foreign matter, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set fault
		Reset the paper. Remove the foreign matter. Replace the tray lift motor. Reset the connector. Replace the harness. Replace the upper limit sensor. Replace the controller board for the optional PFU (D787). Replace the tray. Replace the paper feed roller. Replace the pick-up arm.
SC503-31	B	3rd Tray Lift Error (LCIT: D695)
SC503-31	B	The machine detects the lift error of the tray lift motor for the LCIT (D695) 3 times consecutively when the 3rd tray is lowered at the machine’s initialization. The machine detects the lift error of the tray lift motor for the LCIT (D695) 3 times consecutively when the 3rd tray is lifted at the machine’s initialization. (The message of resetting the tray is displayed when the machine detects the error consecutively 2 times or less.)
		Tray lift motor connector disconnected Limit sensor harness disconnected or broken Controller board defective Foreign matter, such as paper scrap, is caught between the right tray and the tray lift motor. Paper set fault Timing belt damage or dropout Timing pulley damage or dropout Base plate damaged or plate horizontality fault Paper feed roller missing Pickup arm damage Foreign matter, such as paper scrap, is caught inside the right tray.
		Reset the paper. Remove the foreign matter. Replace the tray lift motor. Reset the connector. Replace the harness. Replace the limit sensor. Replace the controller board for the optional LCIT (D695). Replace the tray. Replace the paper feed roller. Replace the pick-up arm. Replace the timing belt. Replace the timing pulley. Replace the base plate.
SC503-32	B	3rd Tray Lowering Error (LCIT: D695)
SC503-32	B	The machine detects the lift error of the tray lift motor for the LCIT (D695) 3 times consecutively when the 3rd tray is lowered at the machine’s initialization. The machine detects the lift error of the tray lift motor for the LCIT (D695) 3 times consecutively when the 3rd tray is lifted at the machine’s initialization. (The message of resetting the tray is displayed when the machine detects the error consecutively 2 times or less.)
		Tray lift motor connector disconnected Lower limit sensor harness disconnected or broken Controller board defective Foreign matter, such as paper scrap, is caught between the right tray and the tray lift motor. Paper set fault Timing belt damage or dropout Timing pulley damage or dropout Base plate damaged or plate horizontality fault Foreign matter, such as paper scrap, is caught inside the right tray.
		Reset the paper. Remove the foreign matter. Replace the tray lift motor. Reset the connector. Replace the harness. Replace the lower limit sensor. Replace the controller board for the LCIT (D695). Replace the tray. Replace the timing belt. Replace the timing pulley. Replace the base plate.
SC503-33	B	3rd Tray Paper Overload Error (LCIT: D695)
		Both of the upper limit sensor and lower limit sensor detects the base plate 3 times consecutively at the machine’s initialization. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Paper overload Paper set fault Upper limit sensor harness disconnected or broken Lower limit sensor harness disconnected or broken Control board defective Foreign matter, such as paper scrap, is caught inside the right tray.
		Reset the paper. Remove the foreign matter. Reset the connector. Replace the harness. Replace the upper limit sensor. Replace the lower limit sensor. Replace the controller board for the LCIT (D695).
SC503-34	B	3rd Tray Paper Position Error (LCIT: D695)
		During left/right tray set, or when power is switched ON, or when transfer is complete, "open" is detected 5 times consecutively by end fence open/close detection. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 4 times or less.)
		Paper set fault (paper is offset from position for pushing end fence) Foreign matter entry (foreign matter is caught in the position for pushing end fence) Paper transport cover open/close switch error, connector missing Harness broken Bank controller board defective
		Reset the paper. Remove the foreign matter. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional paper feed tray.
SC503-35	B	3rd Tray Transfer Error (LCIT: D695)
		Transfer end detection error At right tray paper end (right tray lower limit detection, left tray paper detection), left tray paper is transferred to the right tray, but the left tray paper sensor is detected although a predetermined time elapsed (transfer paper missing is not detected), for 3 times consecutively. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Paper transfer motor error/connector missing Left tray paper sensor error/connector missing Harness broken Bank control board defective Paper overload Foreign matter, such as paper scrap, is caught between the left tray and the paper tray transfer motor Paper set fault Timing belt damage/dropout Timing pulley damage/dropout Transfer fence defective Foreign matter, such as paper scrap, is caught inside the left tray
		Replace the motor. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional paper feed tray. Reset the paper. Remove the foreign matter. Replace the tray. Replace the timing belt. Replace the timing pulley. Replace the end fence of the left tray.
SC503-36	B	3rd Tray Transfer HP Error (LCIT: D695)
SC503-36	B	HP detection error (during transfer start) At right tray paper end (right tray lower limit detection, left tray paper detection), left tray paper is transferred to the right tray, but the transfer fence home position sensor is detected although a predetermined time elapsed (home position sensor missing cannot be detected). HP detection error (during transfer fence HP return) During transfer fence HP not detected (stop after paper transfer, during power supply ON, during left tray set), the transfer fence is moved to HP, but the transfer fence home position sensor is not detected although a predetermined time elapsed. *If an error occurs 3 times consecutively: LCIT transmits "3rd paper feed tray transfer HP error" to the main machine. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Paper transfer motor error/connector missing Transfer fence home position sensor error/connector missing Harness broken Bank controller board defective Paper overload Foreign matter, such as paper scrap, is caught between the left tray and the paper transport motor Paper set fault Timing belt damage/dropout Timing pulley damage/dropout Transfer fence defective Foreign matter, such as paper scrap, is caught inside the left tray
		Replace the motor. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional paper feed tray. Reset the paper. Remove the foreign matter. Replace the tray. Replace the timing belt. Replace the timing pulley. Replace the end fence of the left tray.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC504-21	B	4th Tray Lift Error (D787)
		Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, but the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Tray lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank controller board defective Foreign matter, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set fault
		Reset the paper. Remove the foreign matter. Replace the motor. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional paper feed tray. Replace the tray. Replace the paper feed roller. Replace the pick-up arm.
SC504-22	B	4th Tray Lowering Error (D787)
		Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position, but the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Tray lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank controller board defective Paper overload Foreign matter, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set fault
		Reset the paper. Remove the foreign matter. Replace the motor. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional paper feed tray. Replace the tray. Replace the paper feed roller. Replace the pick-up arm.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC505-41	B	Side LCIT Limit Detection Error (D696)
SC505-41	B	Upper limit detection error (during descent) During tray initialization (upper limit detection/lower limit not detected), the tray base plate is lowered to check the tray base plate position, but the upper limit sensor is detected although a predetermined time elapsed. Upper limit detection error (during ascent) During tray initialization (upper limit not detected /lower limit detection), the tray base plate is raised to check the tray base plate position, but the upper limit sensor is not detected although a predetermined time elapsed. *If an error occurs for 3 times consecutively: the side LCIT transmits a "5th paper feed tray upper limit detection error" to the main machine. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Tray lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank controller board defective Paper set fault Timing belt damage/dropout Timing pulley damage/dropout Base plate damage/horizontality fault Paper feed roller missing item Pickup arm defective Foreign matter, such as paper scrap, is caught inside the tray
		Reset the paper. Remove the foreign matter. Replace the motor. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional side LCT. Replace the tray. Replace the paper feed roller. Replace the pick-up arm. Replace the timing belt. Replace the timing pulley. Replace the base plate.
SC505-42	B	Side LCIT Lower Limit Detection Error (D696)
SC505-42	B	Lower limit detection error (during descent) During tray initialization (upper limit not detected /lower limit eject detection), the tray base plate is lowered to check the tray base plate position, but the lower limit sensor is not detected although a predetermined time elapsed. Alternatively, at paper end, the tray base plate is lowered, but the lower limit sensor is not detected although a predetermined time elapsed. Lower limit detection error (during ascent) During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, but the lower limit sensor is detected although a predetermined time elapsed. *If an error occurs for 3 times consecutively: the side LCIT transmits a "5th paper feed tray upper limit detection error" to the main machine. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Tray lift motor error/connector missing Lower limit sensor error/connector missing Harness broken Bank control board defective Paper set fault Timing belt damage/dropout Timing pulley damage/dropout Base plate damage/horizontality fault Foreign matter, such as paper scrap, is caught inside the tray
		Reset the paper. Remove the foreign matter. Replace the motor. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional side LCT. Replace the tray. Replace the timing belt. Replace the timing pulley. Replace the base plate.
SC505-43	B	Side LCIT Paper Overload Error (D696)
		During tray initialization, both the upper limit and lower limit are detected for 3 times consecutively. (The message of resetting the tray is displayed when the both sensors detect the error consecutively 2 times or less.)
		Paper overload Paper set fault Upper Limit sensor error/connector missing Lower limit sensor error/connector missing Harness broken Bank control board defective Foreign matter, such as paper scrap, is caught inside the tray
		Reset the paper. Remove the foreign matter. Reset the connector. Replace the harness. Replace the sensor. Replace the controller board for the optional side LCT.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC508-00	B	Bypass Tray Size Detection Error
		The paper size detected on the bypass tray is different from any of the pattern of automatic size detection.
		Bypass Length Sensor or Bypass Width Sensor malfunction Bypass Length Sensor or Bypass Width Sensor harness disconnected
		Replace the Bypass Length Sensor, or Bypass Width Sensor. Replace the harness for Bypass Length Sensor, or Bypass Width Sensor.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC520-01	C	Registration Motor: Lock
SC520-02	C	Paper feed Motor: Lock
SC520-03	C	Vertical Transport Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 500msec, the error state of either register was detected at least 5 times.
		Motor defective Connector disconnected Harness broken BCU defective Encoder defective
		Replace the motor. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC521-01	C	Duplex Entrance Motor: Lock
SC521-02	C	Duplex By-pass Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 500msec, the error state of either register was detected at least 5 times.
		Motor defective Connector disconnected Harness broken BCU defective Encoder defective
		Replace the motor. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC522-00	C	Paper Exit Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 500msec, the error state of either register was detected at least 5 times.
		Motor defective Connector disconnected Harness broken BCU defective Encoder defective
		Replace the motor. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC530-00	D	Fusing Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken BCU defective
		Replace the fusing fan. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC531-00	D	Development Bearing Cooling Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken BCU defective
		Replace the development bearing cooling fan Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC533-00	D	PSU Cooling Fan Lock
SC533-01	D	Development Bearing Cooling Fan
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken BCU defective
		Replace the development bearing cooling fan. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC534-00	D	Development Exhaust Fan
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken BCU defective
		Replace the development exhaust fan. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC535-00	D	Paper Exit Cooling Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken BCU defective
		Replace the paper exit cooling fan. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC540-00	D	Fusing/paper Exit Motor: Lock
		During motor ON, after checking lock signals for 2sec, a High level was detected at least 20 times.
		Motor defective Connector disconnected Harness broken BCU defective Unit torque increased
		Replace the fusing/paper exit motor. Reset the connector. Replace the harness. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC541-01	A	Fusing Thermopile (Center) Disconnection
		Below a predetermined temperature (or below CB) is detected for specified seconds continuously. Detection frequency: 10 times or more.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Replace the thermopile (center). Replace the harness between the fusing unit and the BCU. Replace the BCU.
SC541-02	A	NC Sensor (Center) Disconnection
		3ED - 3FF (FB voltage: 3.243V-3.300V) is detected for specified seconds continuously (NC sensor (center): detection & compensation, NC sensor (end): detection & compensation). Detection period: 100 ms, detection frequency: 10 times or more.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Replace the NC sensor (center). Replace the harness between the fusing unit and the BCU. Replace the BCU.
SC541-03	A	NC Sensor (Center) Short-circuit
		AD value: 0-13 (FB voltage: 0.000V-0.041V) is detected for specified seconds continuously. Detection period: 100 ms, detection frequency: 10 times or more.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Replace the NC sensor (center). Replace the harness between the fusing unit and the BCU. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC542-02	A	Fusing Thermopile (Center) Thermopile Does Not Reload
SC542-02	A	When the thermopile (center) does not reach a predetermined temperature for 7 seconds consecutively.
SC542-03	A	Fusing Thermopile (Center) Does Not Reload
SC542-03	A	When the thermopile (center) does not reach the permission temperature of heat central reloading for specified seconds continuously.
SC542-05	C	Fusing Thermopile (Center) Does Not Reload (Low Voltage)
SC542-05	C	When the thermopile (center) does not reach a predetermined temperature for 7 seconds consecutively.
SC542-06	C	Fusing Thermopile (Center) Does Not Reload (Low Voltage)
SC542-06	C	When the thermopile (center) does not reach the permission temperature of heat central reloading for specified seconds continuously.
		Thermopile (center) lens dirt Thermopile (center) installed incorrectly Thermopile (center) deformed or not installed (or mounted) properly Outside input voltage guarantee After excessive temperature rise prevention unit operation
		Remove the jammed paper in the fusing unit. Check and replace the thermopile (center). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC543-00	A	Fusing Thermopile (Center) High Temperature Detection (Software)
		When the thermopile (center) detects a predetermined temperature or above for specified seconds consecutively. Detection period 100ms, detection count: 10 times or more.
		Triac short-circuit Engine controller defective Fusing roller temperature sensor (center) defective Fusing control software defective
		Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU board. Replace the fusing unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC544-01	A	Fusing High Temperature Detection (hardware) (Fusing Thermopile (Center) High Temperature Error)
		In the event of an error
		Triac defective (short-circuit) Engine controller defective Fusing roller temperature sensor (center) defective Fusing control software: out of control
		Check the sensor temperature with the following SPs. If the temperature is lower than 250°C, replace the thermopile or thermistor. SP1-141-101 (Thermopile (center)) SP1-141-102 (Thermopile (edge)) SP1-141-103 (Thermistor (center)) SP1-141-104 (Thermistor (edge)) SP1-141-151 (Thermopile (center): 200 msec before the SC is generated) SP1-141-152 (Thermopile (edge): 200 msec before the SC is generated) SP1-141-153 (Thermistor (center): 200 msec before the SC is generated) SP1-141-154 (Thermistor (edge): 200 msec before the SC is generated) Note: The high temperature state of the fusing unit is detected when the temperature detected by the sensor is 250°C or more. Therefore, if the temperature of the above SPs is lower than 250°C, the thermopile or thermistor may be defective or out of position. Check the fusing unit. Check the triac of the AC controller on the PSU and replace the PSU. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU board. Turn the power off/on.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC544-02	A	Fusing High Temperature Detection (hardware) (Non-Contact thermistor High Temperature Error)
		In the event of an error
		Triac defective (short-circuit) Engine controller defective Fusing roller temperature sensor (center) defective Fusing control software: out of control
		Check the sensor temperature with the following SPs. If the temperature is lower than 250°C, replace the thermopile or thermistor. SP1-141-101 (Thermopile (center)) SP1-141-102 (Thermopile (edge)) SP1-141-103 (Thermistor (center)) SP1-141-104 (Thermistor (edge)) SP1-141-151 (Thermopile (center): 200 msec before the SC is generated) SP1-141-152 (Thermopile (edge): 200 msec before the SC is generated) SP1-141-153 (Thermistor (center): 200 msec before the SC is generated) SP1-141-154 (Thermistor (edge): 200 msec before the SC is generated) Note: The high temperature state of the fusing unit is detected when the temperature detected by the sensor is 250°C or more. Therefore, if the temperature of the above SPs is lower than 250°C, the thermopile or thermistor may be defective or out of position. Check the fusing unit. Check the triac of the AC controller on the PSU and replace the PSU. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU board. Turn the power off/on.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC545-01	A	Fusing Central Heater Continuously Heat
		After waiting for full power for more than specified seconds continuously, not detected for specified seconds. Definition of heater full power Continuously heating rate set point (maximum heating rate) Measurement start point After reload (after heater extinguished, after rotation complete) below the standby temperature (target temperature), measurement starts after a heater 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.
		Thermopile (center) lens dirt Thermopile (center) installed incorrectly Thermopile bracket deformation Heater disconnection After excessive temperature rise prevention unit operates Outside input voltage guarantee
		Remove the jammed paper in the fusing unit Check and replace the thermopile (center). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the BCU board.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC545-05	C	Fusing Central Heater Continuously Heat (Low Voltage)
		After waiting for full power for more than specified seconds continuously, not detected for specified seconds. Definition of heater full power Continuously heating rate set point (maximum heating rate) Measurement start point After reload (after heater extinguished, after rotation complete) below the standby temperature (target temperature), measurement starts after a heater 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.
		Thermopile (center) lens dirt Thermopile (center) installed incorrectly Thermopile bracket deformation Heater disconnection After excessive temperature rise prevention unit operates Outside input voltage guarantee
		Remove the jammed paper in the fusing unit Check and replace the thermopile (center). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the BCU board.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC547-01	D	Zero cross Error (relay-contact soldering)
		In the event of an error
		Fusing relay defective (contact soldering) Fusing relay drive circuit fault
		Turn the main power supply switch OFF/ON If the fusing relay is damaged, replace the PSU. Check the connection between PSU and controller board, and replace harness and board if necessary.
SC547-02	D	Zero cross Error (relay contact fault)
		In the event of an error
		Fusing relay damage (contact open) Fusing relay drive circuit fault PSU fuse (24VS) blowout
		Turn the main power supply switch OFF/ON. If the fusing relay is damaged, replace the PSU. Check the connection between PSU and controller board, and replace harness and board if necessary. If the PSU fuse (24VS) blows out, replace the fuse.
SC547-03	D	Zero cross Error (low-frequency error)
		In the event of an error
		Frequency instability of commercial power line
		Turn the main power supply switch OFF/ON. Check the power source. Check the connection between PSU and controller board, and replace harness and board if necessary.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC551-01	A	Fusing Thermopile (Edge) Disconnection
		When the thermopile (edge) detects a predetermined temperature or less for specified seconds consecutively.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Replace the thermopile (edge). Replace the harness between the fusing unit and the BCU. Replace the BCU.
SC551-02	A	NC Sensor (End) Disconnection
		3ED - 3FF (FB voltage: 3.243V-3.300V) is detected for specified seconds continuously (NC sensor (center): detection & compensation, NC sensor (end): detection & compensation). Detection period: 100 ms, detection frequency: 10 times or more.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Reset the NC sensor. Replace the harness between the fusing unit and the BCU. Replace the BCU.
SC551-03	A	NC Sensor (End) Short-circuit
		AD value: 0-13 (FB voltage: 0.000V-0.041V) is detected for specified seconds continuously. Detection period: 100 ms, detection frequency: 10 times or more.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Reset the NC sensor. Replace the harness between the fusing unit and the BCU. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC552-02	A	Fusing Thermopile (Edge) Does Not Reload
SC552-02	A	When the thermopile (edge) does not reach a predetermined temperature for specified seconds consecutively.
SC552-03	A	Fusing Thermopile (Edge) Does Not Reload
SC552-03	A	Heating edge reload permission temperature not reached after heater 1 ON for specified seconds.
SC552-05	C	Fusing Thermopile (Edge) Does Not Reload (Low Voltage)
SC552-05	C	When the thermopile (edge) does not reach a predetermined temperature for specified seconds consecutively.
SC552-06	C	Fusing Thermopile (Edge) Does Not Reload (Low Voltage)
SC552-06	C	When the thermopile (edge) does not reach the permission temperature of heat edge reloading for specified seconds continuously.
		Thermopile (edge) lens dirt Thermopile (edge) installed incorrectly Thermopile modification Outside input voltage guarantee After excessive temperature rise prevention unit operation
		Remove the jammed paper in the fusing unit. Check and replace the thermopile (edge). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC553-00	A	Fusing Thermopile (Edge) High Temperature Detection (software)
		Above a predetermined temperature detected for specified seconds continuously. Detection period: 100ms, detection count: 10 times or more.
		Triac short-circuit Engine controller defective Fusing roller temperature sensor (center) defective Fusing control software defective
		Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Reconnect the following connectors CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU board. Replace the fusing unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC554-01	A	Fusing Thermopile (Edge) High Temperature Detection (hardware)
		In the event of an error
		Triac defective (short-circuit) Engine controller defective Fusing roller temperature sensor (center) defective Fusing control software: out of control
		Check the sensor temperature with the following SPs. If the temperature is lower than 250°C, replace the thermopile or thermistor. SP1-141-101 (Thermopile (center)) SP1-141-102 (Thermopile (edge)) SP1-141-103 (Thermistor (center)) SP1-141-104 (Thermistor (edge)) SP1-141-151 (Thermopile (center): 200 msec before the SC is generated) SP1-141-152 (Thermopile (edge): 200 msec before the SC is generated) SP1-141-153 (Thermistor (center): 200 msec before the SC is generated) SP1-141-154 (Thermistor (edge): 200 msec before the SC is generated) Note: The high temperature state of the fusing unit is detected when the temperature detected by the sensor is 250°C or more. Therefore, if the temperature of the above SPs is lower than 250°C, the thermopile or thermistor may be defective or out of position. Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Replace the PSU. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU board. Turn the power off/on.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC554-02	A	NC Sensor (End) High Temperature Detection (hardware)
		In the event of an error
		Triac defective (short-circuit) Engine controller defective Fusing roller temperature sensor defective (rear) Fusing control software: out of control
		Check the sensor temperature with the following SPs. If the temperature is lower than 250°C, replace the thermopile or thermistor. SP1-141-101 (Thermopile (center)) SP1-141-102 (Thermopile (edge)) SP1-141-103 (Thermistor (center)) SP1-141-104 (Thermistor (edge)) SP1-141-151 (Thermopile (center): 200 msec before the SC is generated) SP1-141-152 (Thermopile (edge): 200 msec before the SC is generated) SP1-141-153 (Thermistor (center): 200 msec before the SC is generated) SP1-141-154 (Thermistor (edge): 200 msec before the SC is generated) Note: The high temperature state of the fusing unit is detected when the temperature detected by the sensor is 250°C or more. Therefore, if the temperature of the above SPs is lower than 250°C, the thermopile or thermistor may be defective or out of position. Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Replace the PSU. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU board. Turn the power off/on.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC555-01	A	Fusing Edge Heater Continuously Heat
SC555-05	C	Fusing Edge Heater Continuously Heat (Low Voltage)
		After waiting for full power for more than specified seconds continuously, not detected for specified seconds. Definition of heater full power Continuously heating rate set point (maximum heating rate) Measurement start point After reload (after heater extinguished, after rotation complete) below the standby temperature (target temperature), measurement starts after a heater 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
		Thermopile (edge) lens dirt Thermopile (edge) installed incorrectly Thermistor deformation Heater disconnection After excess temperature rise prevention unit operation Outside input voltage guarantee
		Remove the jammed paper in the fusing unit. Check and replace the thermopile (edge). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC557-00	C	Zero Cross Frequency Exceeded
		In the event of an error
		Frequency instability of commercial power line/Noise
		-

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC558-00	C	Low Input Voltage
		On the mains power supply, detected the input voltage that is less than the specification and is more than 50V.
		Low input of mains power supply
		-

SC No.	Level	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 Normal paper exit has been done during this continuous fusing jam, fusing jam counter is reset. When "1" is changed to "0" SP1-142-001, to reset the (SP9-912-001) fusing jam counter. When after displaying SC559, SC release is made, reset the (SP9912-001) fusing jam counter.
		Fusing unit paper jam
		Remove the jam.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC561-00	A	Pressure Roller Thermistor (Center) Disconnection
		When the pressure roller thermistor (center) detects a predetermined temperature or less for specified seconds consecutively. Detection period 100ms, detection count: 10 times or more.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Replace the pressure roller thermistor (center). Replace the harness between the fusing unit and the BCU. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC562-02	A	Pressure Roller Thermistor (Center) Does Not Reload
		When the pressure roller thermistor (center) does not reach a predetermined temperature for specified seconds consecutively.
		Thermistor dirt Thermopile deformed or not installed (or mounted) properly Outside input voltage guarantee After excess temperature rise prevention unit operation
		Remove the jammed paper in the fusing unit. Check and replace the pressure roller thermistor (center). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the thermopile. Replace the BCU.
SC562-05	C	Pressure Roller Thermistor (Center) Does Not Reload (Low Voltage)
		When the pressure roller thermistor (center) does not reach a predetermined temperature for specified seconds consecutively.
		Thermistor dirt Thermopile deformed or not installed (or mounted) properly Outside input voltage guarantee After excess temperature rise prevention unit operation
		Remove the jammed paper in the fusing unit. Check and replace the pressure roller thermistor (center). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the thermopile. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC563-00	A	Pressure Roller Thermistor (Center) High Temperature Detection (software)
		Above a predetermined temperature detected for specified seconds continuously. Detection period: 100ms, detection count: 10 times or more.
		Triac short-circuit Engine controller defective Pressure roller thermistor (end) defective Fusing control software defective
		Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU. Replace the fusing unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC564-00	A	Fusing High Temperature Detection (hardware) (Pressure Roller Thermistor Error)
		In the event of an error
		Triac short-circuit Engine controller defective Pressure roller thermistor (end) defective Fusing controller software defective
		Check the sensor temperature with the following SPs. If the temperature is lower than 250°C, replace the thermopile or thermistor. SP1-141-101 (Thermopile (center)) SP1-141-102 (Thermopile (edge)) SP1-141-103 (Thermistor (center)) SP1-141-104 (Thermistor (edge)) SP1-141-151 (Thermopile (center): 200 msec before the SC is generated) SP1-141-152 (Thermopile (edge): 200 msec before the SC is generated) SP1-141-153 (Thermistor (center): 200 msec before the SC is generated) SP1-141-154 (Thermistor (edge): 200 msec before the SC is generated) Note: The high temperature state of the fusing unit is detected when the temperature detected by the sensor is 250°C or more. Therefore, if the temperature of the above SPs is lower than 250°C, the thermopile or thermistor may be defective or out of position. Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Replace the PSU. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit. Replace the BCU. Turn the power off/on.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC571-00	A	Pressure Roller Thermistor (End) Disconnection
		When the pressure roller thermistor (end) detects a predetermined temperature or less for specified seconds consecutively. Detection period: 100 ms, detection counts: 10 times or more.
		Harness broken Connector disconnected
		Reconnect the connectors between the fusing unit and the BCU. Replace the pressure roller thermistor (end). Replace the harness between the fusing unit and the BCU. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC572-02	A	Pressure Roller Thermistor (End) Does Not Reload
		When the temperature does not reach 40 degrees Centigrade for 100 seconds consecutively.
		Thermistor dirt Thermopile deformed or not installed (or mounted) properly Outside input voltage guarantee After excess temperature rise prevention unit operation
		Remove the jammed paper in the fusing unit. Check and replace the pressure roller thermistor (end). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the thermopile. Replace the BCU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC573-00	A	Pressure Roller Thermistor (End) High Temperature Detection (software)
		When the pressure roller thermistor (end) detects a predetermined temperature or above for specified second consecutively.
		Triac short-circuit Engine controller defective Pressure roller thermistor (end) defective Fusing controller software defective
		Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU. Replace the fusing unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC574-00	A	Pressure Roller Thermistor (End) High Temperature Detection (hardware)
		In the event of an error
		Triac short-circuit Engine controller defective Pressure roller thermistor (end) defective Fusing control: out of control
		Check the sensor temperature with the following SPs. If the temperature is lower than 250°C, replace the thermopile or thermistor. SP1-141-101 (Thermopile (center)) SP1-141-102 (Thermopile (edge)) SP1-141-103 (Thermistor (center)) SP1-141-104 (Thermistor (edge)) SP1-141-151 (Thermopile (center): 200 msec before the SC is generated) SP1-141-152 (Thermopile (edge): 200 msec before the SC is generated) SP1-141-153 (Thermistor (center): 200 msec before the SC is generated) SP1-141-154 (Thermistor (edge): 200 msec before the SC is generated) Note: The high temperature state of the fusing unit is detected when the temperature detected by the sensor is 250°C or more. Therefore, if the temperature of the above SPs is lower than 250°C, the thermopile or thermistor may be defective or out of position. Check the fusing unit. Check that the triac of the AC controller on the PSU does not short-circuit. Replace the PSU. Reconnect the following connectors: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the following harness: CN115 of BCU, connectors between the fusing unit and the BCU, connectors connected to the fusing unit Replace the BCU. Turn the power off/on.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC589-01	D	Fusing center: Low Temperature Detection
		When the thermopile (center) detects the temperature which is 180 degrees Centigrade lower than target Temperature for 12 seconds consecutively.
		Central heater harness disconnected Connector defective After excess temperature rise prevention unit (thermostat) operation
		Replace the jammed paper in the fusing unit. Check and replace the thermopile (center). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the BCU.
SC589-02	D	Fusing edge: Low Temperature Detection
		When the thermopile (edge) detects the temperature which is 180 degrees Centigrade lower than target Temperature for 12 seconds consecutively.
		Edge heater harness disconnected Connector defective After excess temperature rise prevention unit (thermostat) operation
		Replace the jammed paper in the fusing unit. Check and replace the thermopile (edge). Check the power supply voltage and reconnect the cable to the outlet. Replace the thermostat. Replace the BCU.