• Code: SC381-04
• Description: Potential sensor output high error (Y). Vd(700) greater than 800[-V] Details: In Vd detection, which is done at the beginning of process control, the measured potential (Vd) is converted to the potential when -700 V is applied to the drum (Vd700) and used to check the potential sensor.
• Causes: Potential sensor dirty (foreign object, such as toner, entering the probe window) / potential sensor probe connector disconnected
• Remedy: • Check if the potential sensor probe is clean. If it is dirty, blow it with air and then check again. If this does not work, replace the potential sensor. • Potential sensor probe connector is disconnected.

• Code: SC382-01
• Description: Potential sensor output low error (K). Vd(700) lesser than 500[-V] Details: In Vd detection, which is done at the beginning of process control, the measured potential (Vd) is converted to the potential when -700 V is applied to the drum (Vd700) and used to check the potential sensor.
• Causes: • Potential sensor defective (probe, PWB, connector)
• Remedy: • Connecter between IOB and potential sensor board disconnected • Replace the potential sensor board.

• Code: SC382-02
• Description: Potential sensor output low error (C). Vd(700) lesser than 500[-V] Details: In Vd detection, which is done at the beginning of process control, the measured potential (Vd) is converted to the potential when -700 V is applied to the drum (Vd700) and used to check the potential sensor.
• Causes: • Potential sensor defective (probe, PWB, connector)
• Remedy: • Connecter between IOB and potential sensor board disconnected • Replace the potential sensor board.

• Code: SC382-03
• Description: Potential sensor output low error (M). Vd(700) lesser than 500[-V] Details: In Vd detection, which is done at the beginning of process control, the measured potential (Vd) is converted to the potential when -700 V is applied to the drum (Vd700) and used to check the potential sensor.
• Causes: • Potential sensor defective (probe, PWB, connector)
• Remedy: • Connecter between IOB and potential sensor board disconnected • Replace the potential sensor board.

• Code: SC382-04
• Description: Potential sensor output low error (Y). Vd(700) lesser than 500[-V] Details: In Vd detection, which is done at the beginning of process control, the measured potential (Vd) is converted to the potential when -700 V is applied to the drum (Vd700) and used to check the potential sensor.
• Causes: • Potential sensor defective (probe, PWB, connector)
• Remedy: • Connecter between IOB and potential sensor board disconnected • Replace the potential sensor board.

• Code: SC390-00
• Description: Black drum drive FF control error. Error detected by the TDCU. If a command sent from the TDCU indicates an error, the engine issues an SC. ASAP command: 0x58_0x08
• Causes: • Black drum motor defective • Black sensor connector disconnected or harness broken • Black drum encoder sensor defective • Black drum encoder smudged or defective
• Remedy: • Replace the black drum encoder sensor. • Replace the black drum encoder. • Replace the black drum drive unit. • Replace the black drum motor. • Reconnect the connector or replace the harness.

• Code: SC391-00
• Description: Cyan drum drive FF control error. Error detected by the TDCU. If a command sent from the TDCU indicates an error, the engine issues an SC. ASAP command: 0x58_0x02
• Causes: • Cyan drum motor defective • Cyan sensor connector disconnected or harness broken • Cyan drum encoder sensor defective • Cyan drum encoder smudged or defective
• Remedy: • Replace the cyan drum encoder sensor. • Replace the cyan drum encoder. • Replace the cyan drum drive unit. • Replace the cyan drum motor. • Reconnect the connector or replace the harness.

• Code: SC392-00
• Description: Magenta drum drive FF control error. Error detected by the TDCU. If a command sent from the TDCU indicates an error, the engine issues an SC. ASAP command: 0x58_0x04
• Causes: • Magenta drum motor defective • Magenta sensor connector disconnected or harness broken • Magenta drum encoder sensor defective • Magenta drum encoder smudged or defective
• Remedy: • Replace the magenta drum encoder sensor. • Replace the magenta drum encoder. • Replace the magenta drum drive unit. • Replace the magenta drum motor. • Reconnect the connector or replace the harness.