• Code: SC370-03
• Description: 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)
• Causes: • TM (ID) sensor connector missing/ connection fault • TM (ID) sensor detection window dirt • TM (ID) sensor malfunction • Undulation in the ITB, or belt slippage
• Remedy: • Remove image transfer unit, and check for TM (ID) sensor connector missing. If it is missing, reconnect it. • Check for dirt on the ID sensor detection window. If te detection window is dirty, clean by predetermined method (do not wipe dry). • Check the condition of the ITB. If undulation or belt slippage has occurred, re-install or replace the ITB. • If neither of the above have occurred, perform TM (ID) sensor replacement

• Code: SC396-05
• Description: Drum motor (CMY) Lock Lock signals are observed at 2 sec intervals during motor ON, and a High level is detected at least 20 times.
• Causes: • Motor defective • Connector disconnected • Harness broken • IOB defective • Unit torque increased.
• Remedy: • Replace the motor • Reconnect the connector • Replace the harness • Replace the IOB • Replace the PCDU

• Code: SC441-00
• Description: Drum transfer motor: Lock Lock signals are observed at 2 sec intervals during motor ON, and a High level is detected at least 20 times.
• Causes: • Motor defective • Connector disconnected • Harness broken • IOB defective • Unit torque increased
• Remedy: • Replace the motor • Reconnect the connector • Replace the harness • Replace the IOB • Check the load on the motor (PCDU, Image transfer unit, Paper transfer unit, Waste toner bottle). • Replace the PCDU, Image transfer unit, Paper transfer unit or Waste toner bottle.

• Code: SC442-00
• Description: ITB Lift Error Even though the ITB lift motor (also Toner supply motor (M)) rotates, the ITB lift sensor failed to detect the specified sensor feeler status within specified time. • Contact/separation operation: If not detected in 2000msec • Home position operation: If not detected in 5000msec Signal detection sampling period: 10msec
• Causes: • Image transfer unit not set/faulty setting • Sensor dirt • Sensor defective • Motor defective • Unit load large
• Remedy: • Reset the Image transfer unit • Clean the sensor • Replace the sensor • Replace the contact/separation drive unit • Replace the image transfer unit • Check the harness

• Code: SC443-00
• Description: Image transfer encoder error/Image transfer unit set fault During encoder count of the transfer motor, if there is no effective edge interrupt for 1.5 sec, and there is an overflow for 1.5 seconds consecutively, it is determined that there is an encoder error, SC443-00 is logged, and the system shifts to FG control without stopping the transfer motor. This error does not occur in this machine, because it does not have an encoder.
• Causes: • Encoder defective • Transfer motor defective • Connector disconnected • Harness broken
• Remedy: • Replace the image transfer unit • Replace the transfer motor • Reset the connector • Replace the harness • Ensure that SP2-920-07 to 009 is set to "1(FG)". It must not be set to "0".

• Code: SC444-00
• Description: Image transfer phase sensor error Phase sensor signal does not become L->H or H->L for 1.2 sec (time to perform 1.5 or more rotations even when transfer gear is at minimum speed) during motor ON, an image transfer phase sensor error log SC is displayed.
• Causes: • Sensor dirt • Sensor defective • Connector disconnected • Harness broken
• Remedy: • Clean the sensor • Replace the sensor • Reset the connector • Check the harness

• Code: SC452-00
• Description: Paper transfer contact motor error Paper transfer contact motor: position sensor cannot detect the sensor filler state within the predetermined time (see below) even if the paper transfer contact motor is rotated. • Contact operation: If not detected in 2000msec • Home position operation: If not detected in 5000msec Signal detection sampling period: 10msec
• Causes: • Sensor dirt • Sensor defection • Motor defection • Unit load large
• Remedy: • Replace the contact drive unit • Replace the image transfer unit • Check the harness

• Code: SC491-00
• Description: High voltage power source: charge/development: output error SC detection signal (charge/development) is L (abnormal) for 200 ms consecutively during high voltage (charge/development) output.
• Causes: H/W error • Output contact setting fault • Controller connector set fault • Ground fault of output high voltage path • Surface/air clearance insufficient (arc discharge) • Controller harness disconnection, short-circuit • PCU setting fault • Control board _IOB error (related signal error) • HVP_CB error Load error • Grounding fault of charging output, short-circuit with other outputs • Surface/air clearance insufficient in charging output path (including distance from other outputs) • Abnormal deterioration of drum, and over current due to pinholes • Drum vs charge roller gap error (PCU error). • Over current due to drum surface condensation • Grounding fault of developing output, short-circuit with other outputs • Surface/air clearance insufficient in developing output path (including distance from other outputs) • Other
• Remedy: • Cycle the main power off/on • Reset or replace the harness of high voltage power supply feed path • Reset or replace the harness between IOB-HVP_CB • Reset or replace the PCU • Check the operation of the contact mechanism • Replace the HVP_CB • Replace the IOB