SC300 (Engine: Charge, Development)

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC300-01	D	Combined High-Voltage Power Supply Board (Charge) Output Error (K)
SC300-02	D	Combined High-Voltage Power Supply Board (Charge) Output Error (C)
SC300-03	D	Combined High-Voltage Power Supply Board (Charge) Output Error (M)
SC300-04	D	Combined High-Voltage Power Supply Board (Charge) Output Error (Y)
		The interrupt that checks the status of the combined high-voltage power supply board (charge) power pack every 10 ms detected SC signals 15 times consecutively. Details: In case of an overcurrent, the charge power pack outputs SC signals. The machine monitors it, and issues an SC when an error occurs.
		High voltage harness shorted. Leakage around the charge roller caused by a conductive object.
		Remove the cause of leakage.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC312-01	D	Charge FB Voltage Error (K)
SC312-02	D	Charge FB Voltage Error (C)
SC312-03	D	Charge FB Voltage Error (M)
SC312-04	D	Charge FB Voltage Error (Y)
		On plotter startup, the charge FB (feed-back) voltage was 0.3V or less for 15 consecutive readings. Details: SC issued when electric current does not pass after charge bias is applied, which can be caused when a harness is disconnected or damaged, or when the charge roller or the drum is not installed.
		High-voltage harness damaged or not connected correctly. Charge roller or OPC drum not installed
		Fix the problem.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC320-01	D	Combined High-Voltage Power Supply Board (Development) Output Error (K)
SC320-02	D	Combined High-Voltage Power Supply Board (Development) Output Error (C)
SC320-03	D	Combined High-Voltage Power Supply Board (Development) Output Error (M)
SC320-04	D	Combined High-Voltage Power Supply Board (Development) Output Error (Y)
		When SC signals are detected 25 times consecutively in 20 ms intervals (500 msec). Details: When the combined high-voltage power supply board (development) is shorted, the combined high-voltage power supply board (development) detects it by means of an SC signal (HIGH level). The IOB monitors the SC signals as explained above.
		Development power pack shorted
		Disconnect the high voltage cable from the output terminal of the combined high-voltage power supply board (development) of the corresponding color, and check the following points. PWM: Check the signal of the corresponding color. If the signal is fixed to HIGH during photocopying process, replace the harness or the IOB. Check the output of the combined high-voltage power supply board (development) of the corresponding color. If the output is fixed to HIGH during photocopying process, replace the combined high-voltage power supply board (charge/development). If the output is normal during photocopying process, test the resistance between the highvoltage cable and the ground. If resistance is “0” or nearly “0”, replace the high-voltage harness or PCDU.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC325-00	D	Development motor: Bk: Lock
		When the unlocked status is detected 20 times in total by referring the status register of the development motor in 100 ms intervals while the development motor is on, the machine recognizes that the development motor does not rotate correctly. When turning OFF the machine or locking the development motor, the total count will be cleared. Details: When the development motor is on, each lock signal is checked every 100 milliseconds. If the High status is detected 20 times in total, the machine determines that the development motor is not running correctly. The machine issues an SC and stops the development motor.
		Development motor defective Connecter disconnected Harness broken IOB defective Unit torque increased.
		Replace the development motor. Reconnect the connector. Replace the harness. Replace the IOB. Replace the development unit. Replace the driven unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC326-00	D	Development motor: C: Lock
		When the unlocked status is detected 20 times in total by referring the status register of the development motor in 100 ms intervals while the development motor is on, the machine recognizes that the development motor does not rotate correctly. When turning OFF the machine or locking the development motor, the total count will be cleared. Details: When the development motor is on, each lock signal is checked every 100 milliseconds. If the High status is detected 20 times in total, the machine determines that the development motor is not running correctly. The machine issues an SC and stops the development motor.
		Development motor defective Connecter disconnected Harness broken IOB defective Unit torque increased.
		Replace the development motor. Reconnect the connector. Replace the harness. Replace the IOB. Replace the development unit. Replace the driven unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC327-00	D	Development motor: M: Lock
		When the unlocked status is detected 20 times in total by referring the status register of the development motor in 100 ms intervals while the development motor is on, the machine recognizes that the development motor does not rotate correctly. When turning OFF the machine or locking the development motor, the total count will be cleared. Details: When the development motor is on, each lock signal is checked every 100 milliseconds. If the High status is detected 20 times in total, the machine determines that the development motor is not running correctly. The machine issues an SC and stops the development motor.
		Development motor defective Connecter disconnected Harness broken IOB defective Unit torque increased.
		Replace the development motor. Reconnect the connector. Replace the harness. Replace the IOB. Replace the development unit. Replace the driven unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC328-00	D	Development motor: Y: Lock
		When the unlocked status is detected 20 times in total by referring the status register of the development motor in 100 ms intervals while the development motor is on, the machine recognizes that the development motor does not rotate correctly. When turning OFF the machine or locking the development motor, the total count will be cleared. Details: When the development motor is on, each lock signal is checked every 100 milliseconds. If the High status is detected 20 times in total, the machine determines that the development motor is not running correctly. The machine issues an SC and stops the development motor.
		Development motor defective Connecter disconnected Harness broken IOB defective Unit torque increased.
		Replace the development motor. Reconnect the connector. Replace the harness. Replace the IOB. Replace the development unit. Replace the driven unit.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC332-01	D	Toner supply motor error (K): bottle
SC332-02	D	Toner supply motor error (C): bottle
SC332-03	D	Toner supply motor error (M):bottle
SC332-04	D	Toner supply motor error (Y): bottle
		Detected a lock signal which indicates overcurrent in the toner supply motor. Error Condition: The toner supply motor current prescribed threshold: 600 mA The lock detection counter When a toner supply motor is on, it is checked every 1s (100 milliseconds) for motor current value. If the value is exceeds the prescribed threshold, the lock counter increases by one. When the motor current value exceeds the prescribed threshold in one sampling: increase the lock counter by one When the lock signal is not detected in one sampling: clear the counter The lock detection counter is cleared when the machine is turned OFF/ON (also when the machine enters sleep mode, in which the plotter is turned off), when the screen of the cartridge re-installation is displayed, or when the SC is issued. The lock number counter The lock number counter increases by one when the lock detection counter exceeds 6 (in case of default value is 0), and when the machine determines If the lock number counter value is 1 to 4, the counter is cleared at the time of the toner end sensor detect the presence of the toner. The lock number counter is cleared when the machine is turned OFF/ON (also when the machine enters sleep mode, in which the plotter is turned off), and when the SC is issued. SC Condition: When the lock number counter is more than 5, the machine issues the following SC.
		Toner bottle not set correctly or the torque is large. Toner bottle broken or defective Toner supply motor defective
		Toner bottle not set correctly, toner bottle broken, or large torque: After the machine stops, ask the user to remove the toner bottle, shake it and set it again. Then cycle the machine off/on to return from SC status. Toner bottle broken or defective: Ask the user to remove the toner bottle and set a normal bottle. Then cycle the machine off/on to return from SC status. Toner supply motor defective: Turn OFF the machine and replace the toner supply motor. Then cycle the machine off/on to return from SC status.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC336-01	D	Developer Set Error (K)
SC336-02	D	Developer Set Error (C)
SC336-03	D	Developer Set Error (M)
SC336-04	D	Developer Set Error (Y)
		When the TD sensor control voltage (Vtcnt) is 4.3V, the TD sensor output (Vt) is less than 0.7V. Details: When executing TD sensor initialization (SP3-030), the machine checks the development unit for the presence of developer. If the error condition is detected at this point, the machine determines that there is no developer and issues the SC.
		There is an extremely low amount of developer.
		Check the developer.

SC No.	Level	Error Name/Error Condition/Major Cause/Solution
SC348-01	D	Toner supply error (K)
SC348-02	D	Toner supply error (C)
SC348-03	D	Toner supply error (M)
SC348-04	D	Toner supply error (Y)
		K: Amount of toner on the ID sensor pattern printed and read between sheets (SP3-300-001) is less than the lower threshold (SP3-301-023) and accumulated toner clutch ON time (SP3-301-041) is greater than the upper threshold (SP3-301-031). CMY: Amount of toner on the ID sensor pattern printed and read between sheets (SP3-300-002 to 004) is less than the lower threshold (SP3-301-024) and accumulated toner clutch ON time (SP3-301-042 to 044) is greater than the upper threshold (SP3-301-031). Details: This SC is issued when the toner end sensor continues detecting the presence of toner falsely.
		Toner end sensor cleaner spring broken Toner end sensor cleaner spring not set correctly Toner end sensor defective
		Replace the toner supply unit.