• Code: SC373
• Description: TD sensor [M] : Adjustment error During the developer initialization, the output value of the TD sensor is without the adjustment range (3.0 ± 0.1V).
• Causes: • Poor connection (TD sensor outputs is less than 0.5V.) • Defective TD sensor
• Remedy: 1. Turn the main switch off and on. 2. Reset the related color development unit. 3. Replace the related color development unit.

• Code: SC374
• Description: Vt error [K] During the image development, Vt value is less than 0.5V.
• Causes: • Poor connection (TD sensor outputs is less than 0.5V.) • Defective TD sensor
• Remedy: 1. Turn the main switch off and on. 2. Reset the related color development unit. 3. Replace the related color development unit.

• Code: SC375
• Description: Vt error [Y] During the image development, Vt value is less than 0.5V.
• Causes: • Poor connection (TD sensor outputs is less than 0.5V.) • Defective TD sensor
• Remedy: 1. Turn the main switch off and on. 2. Reset the related color development unit. 3. Replace the related color development unit.

• Code: SC376
• Description: Vt error [C] During the image development, Vt value is less than 0.5V.
• Causes: • Poor connection (TD sensor outputs is less than 0.5V.) • Defective TD sensor
• Remedy: 1. Turn the main switch off and on. 2. Reset the related color development unit. 3. Replace the related color development unit.

• Code: SC377
• Description: Vt error [M] During the image development, Vt value is less than 0.5V.
• Causes: • Poor connection (TD sensor outputs is less than 0.5V.) • Defective TD sensor
• Remedy: 1. Turn the main switch off and on. 2. Reset the related color development unit. 3. Replace the related color development unit.

• Code: SC380
• Description: Black development motor error When the motor speed is within the target level, the motor sends a lock signal (High to Low at CN214-5) to the BCU. SC380 is detected under the following conditions: • The Lock signal stays High 2 seconds after the motor turns on. • The Lock signal stays Low 2 seconds after the motor turns off. • The Lock signal stays High for more than 2 seconds while the motor is on.
• Causes: • Defective motor • Defective BCU
• Remedy: 1. Turn the main switch off and on. 2. Replace the motor. 3. Replace the BCU.

• Code: SC381
• Description: Color development motor error When the motor speed is within the target level, the motor sends a lock signal (High to Low at CN214-5) to the BCU. SC380 is detected under the following conditions: • The Lock signal stays High 2 seconds after the motor turns on. • The Lock signal stays Low 2 seconds after the motor turns off. • The Lock signal stays High for more than 2 seconds while the motor is on.
• Causes: • Defective motor • Defective BCU
• Remedy: 1. Turn the main switch off and on. 2. Replace the motor. 3. Replace the BCU.

• Code: SC385
• Description: ID sensor VSG adjustment error Vsg is the out of adjustment range during a process control self-check. Adjustment range: 4.0 ± 0.5V
• Causes: • Defective ID sensor • Dirty ID sensor • ID sensor disconnected • Dirty drum (cleaning incomplete)
• Remedy: 1. Turn the main switch off and on. 2. Clean the ID sensor and adjacent parts. 3. Check the drum cleaning condition. 4. Check the ID sensor connector. 5. Replace the ID sensor.