SC300 (Engine: Charge, Development)

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC312-01	D	Charge Roller HVP_CB Output Error (K)
SC312-02	D	Charge Roller HVP_CB Output Error (C)
SC312-03	D	Charge Roller HVP_CB Output Error (M)
SC312-04	D	Charge Roller HVP_CB Output Error (Y)
		Charging AC is set to ON at the standard speed, and the FB voltage of the charging AC of each color is monitored for 200 ms at 20ms intervals (10 times) after 80ms of charge AC_ON, and below 0.3V is detected continuously for 200ms (10 times), the SC of the corresponding color lights up, and machine operation is suspended.
		High voltage harness defective or shorted. PCU setting fault or damage HVP_CB fault Connector disconnected Harness broken
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check the PCU for the following points and repair or replace the PCDU if there are any defects. Check for contaminants on the Charge Roller terminal [A] Check for damage or deformation of the Charge Roller terminal [A] Check for continuity with the Charge Roller terminal core bar [B] Check if all connectors related to the PCDU are connected securely. Replace the connectors if they are disconnected, or loose. Repair or replace the parts of the main machine if there are any defects after checking the following points. Check for contaminants on the charged power supplying plate [C] Check for damage or deformation of the charged power supplying plate [C] Check for continuity between the Charge Roller terminal core bar and the HVP (CB) Replace the HVP (CB). If the SC occurs again, replace the BCU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC324-01	D	Development motor: Bk: Lock
		Motor status is observed at 100ms intervals during motor ON, and the unlock status is detected at least 20 times
		Motor defective Connector disconnected Harness broken IOB defective Development unit torque increased
		Replace the motor Reconnect the connector Replace the harness Replace the Imaging IOB. Replace the PCDU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC324-05	D	Development motor: CMY: Lock
		Motor status is observed at 100ms intervals during motor ON, and the unlock status is detected at least 20 times.
		Motor defective Connector disconnected Harness broken IOB defective Development unit torque increased
		Replace the motor Reconnect the connector Replace the harness Replace the Imaging IOB. Replace the PCDU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC360-01	D	TD sensor adjustment error (K)
SC360-02	D	TD sensor adjustment error (C)
SC360-03	D	TD sensor adjustment error (M)
SC360-04	D	TD sensor adjustment error (Y)
		Mu count is higher than the threshold which detects no developer. Mu count is lower than the upper/lower target thresholds three consecutive times.
		TD sensor defective Loose connection Harness broken
		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors related to the TD sensor are connected securely. Replace the connectors if they are disconnected, or loose. Check the Development Unit for the following points and repair or replace the PCDU if there are any defects. Gear came off PCDU seal was not removed Check the TD sensor and repair or replace it if there are any defects. Check the harness for the TD sensor. Replace the harness if it is disconnected, or damaged. Replace the BCU if the SC cannot be repaired even after executing steps 1 to 4.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC361-01	D	TD sensor output error: Upper Limit (K)
SC361-02	D	TD sensor output error: Upper Limit (C)
SC361-03	D	TD sensor output error: Upper Limit (M)
SC361-04	D	TD sensor output error: Upper Limit (Y)
		TD sensor output: Vt (SP3-210-001 to 004) > output upper limit error threshold (SP3-211-002) continuously exceeded the upper limit occurrence threshold value (SP3-211-003).
		TD sensor connector dropout (connection fault) Development unit defective TD sensor defective Parameter error (Mu count value is cleared) Toner supply operation error (When the image density is excessively low, the supply unit may have a possibility of abnormality)
		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors related to the TD sensor are connected securely. Replace the connectors if they are disconnected, or loose. Check the Development Unit for the following points and repair or replace the PCDU if there are any defects. Gear comes off PCDU not set correctly Check the TD sensor and repair or replace it if there are any defects. Replace the PCDU with a new one to initialize the TD sensor (Mu count). Check the Toner Supply Unit and repair or replace it if there are any defects. Toner bottle is empty Toner bottle drive error Clogged supply path Check the harness for the TD sensor. Replace the harness if it is disconnected, or damaged. Replace the BCU if the SC cannot be repaired even after executing steps 1 to 6.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC362-01	D	TD sensor output error: Lower limit (K)
SC362-02	D	TD sensor output error: Lower limit (C)
SC362-03	D	TD sensor output error: Lower limit (M)
SC362-04	D	TD sensor output error: Lower limit (Y)
		TD sensor output: Vt (SP3-210-001 - 004) < output lower limit error threshold (SP3-211-004) is continuously below the lower limit occurrence threshold value (SP3-211-005)
		TD sensor connector dropout (connection fault) Development unit defective TD sensor defective Parameter error (Mu count value is cleared) Toner supply operation error (When the image density is excessively low, the supply unit may have a possibility of abnormality)
		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors related to the TD sensor are connected securely. Replace the connectors if they are disconnected, or loose. Check the Development Unit for the following points and repair or replace the PCDU if there are any defects. Gear comes off PCDU not set correctly Check the TD sensor and repair or replace it if there are any defects. Replace the PCDU with a new one to initialize the TD sensor (Mu count). Check the Toner Supply Unit and repair or replace it if there are any defects. Toner bottle driving error (left rotating) Check the harness for the TD sensor. Replace the harness if it is disconnected, or damaged. Replace the BCU if the SC cannot be repaired even after executing steps 1 to 6.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC370-01	D	TM (ID) sensor calibration error (F)
SC370-02	D	TM (ID) sensor calibration error (C)
SC370-03	D	TM (ID) sensor calibration error (R)
		Regular reflection optical output voltage of the Front or Center or Rear TM (ID) sensor: Vsg_reg cannot be adjusted to within target range. Upper limit (SP3-320-013: initial value 4.5V) Lower limit (SP3-320-014: initial value 3.5V)
		For details about cause and solution, refer to When SC370 (TM (ID) Sensor Calibration Error) is Displayed.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC396-05	D	PCU motor (CMY) Lock
		Motor status is observed at 100ms intervals during motor ON, and the unlock status is detected at least 20 times
		Motor defective Connector disconnected Harness broken IOB defective Unit torque increased.
		Replace the motor Reconnect the connector Replace the harness Replace the Imaging IOB. Replace the PCDU