• Code: 370
• Description: ID sensor calibration error
  The reflection light output voltage of the ID sensor (Vsg_reg) is not adjusted within the target range. Upper limit: SP3320-013 (default: 4.5 V) Lower limit: SP3320-014 (default: 3.5 V)
• Causes: Disconnected ID sensor connectors. Dirty or defective ID sensor. Defective image transfer belt
• Remedy: 1. Check the connection of the connectors of the ID sensor. 2. Clean or replace the ID sensor. Note: After replacing the ID sensor, input the ID sensor correction coefficient with SP3331. For details, refer to "ID sensor board" in the Replacement and Adjustment section. 3. Replace the image transfer belt unit.

• Code: 372
• Description: TD sensor adjustment error: Bk
  During TD sensor initialization, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of the value specified with SP3238-001 to -004 (default: 2.5V) +-.2 V.
• Causes: Heat seal not removed from a new developer pack. TD harness sensor disconnected, loose or defective. TD sensor defective. Harness between TD sensor and drawer disconnected, defective.
• Remedy: 1. Remove the heat seal from each PCDU. 2. Replace the defective PCDU.

• Code: 373
• Description: TD sensor adjustment error: Ma
  During TD sensor initialization, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of the value specified with SP3238-001 to -004 (default: 2.5V) +-.2 V.
• Causes: Heat seal not removed from a new developer pack. TD harness sensor disconnected, loose or defective. TD sensor defective. Harness between TD sensor and drawer disconnected, defective.
• Remedy: 1. Remove the heat seal from each PCDU. 2. Replace the defective PCDU.

• Code: 374
• Description: TD sensor adjustment error: Cy
  During TD sensor initialization, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of the value specified with SP3238-001 to -004 (default: 2.5V) +-.2 V.
• Causes: Heat seal not removed from a new developer pack. TD harness sensor disconnected, loose or defective. TD sensor defective. Harness between TD sensor and drawer disconnected, defective.
• Remedy: 1. Remove the heat seal from each PCDU. 2. Replace the defective PCDU.

• Code: 375
• Description: TD sensor adjustment error: Ye
  During TD sensor initialization, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of the value specified with SP3238-001 to -004 (default: 2.5V) +-.2 V.
• Causes: Heat seal not removed from a new developer pack. TD harness sensor disconnected, loose or defective. TD sensor defective. Harness between TD sensor and drawer disconnected, defective.
• Remedy: 1. Remove the heat seal from each PCDU. 2. Replace the defective PCDU.

• Code: 396
• Description: Drum/Development motor error: Bk
  The machine detects a High signal from the drum/development motor for 2 seconds after the drum/development motor turned on.
• Causes: Overload on the drum/development motor. Defective drum/development motor. Defective harness. Shorted 24 V fuse on the PSU. Defective interlock system.
• Remedy: 1. Check or replace the harness. 2. Replace the drum/development motor. 3. Replace the 24V fuse on the PSU.

• Code: 397
• Description: Drum/Development motor error: Cy, Ma, Ye
  The machine detects a High signal from the drum/development motor for 2 seconds after the drum/development motor turned on.
• Causes: Overload on the drum/development motor. Defective drum/development motor. Defective harness. Shorted 24 V fuse on the PSU. Defective interlock system.
• Remedy: 1. Check or replace the harness. 2. Replace the drum/development motor. 3. Replace the 24V fuse on the PSU.

• Code: 442
• Description: Image transfer belt contact motor error
  The image transfer belt contact motor drives beyond the specified time during home position detection or contact operation.
• Causes: Broken harness or defective connectors. Disconnected connector of image transfer belt contact sensor or motor. Defective image transfer belt contact motor. Image transfer belt unit not installed.
• Remedy: 1. Check and replace the harness and connectors. 2. Replace the image transfer belt contact motor. 3. Reinstall the image transfer belt unit.