• Code: 361-03
• Description: TD sensor (Vt) upper limit error 1: Ma. The machine detects that Vt (TD sensor output, SP3-210-001) is higher than the upper limit threshold (specified in SP3-211-002) for the specified consecutive times in SP3-211-003.
• Causes: • TD sensor connector is disconnected
• Remedy: To check if the issue is resolved: 1. Cycle the power off/on. 2. Feed one sheet of paper. 3. Check Vt with SP3-210-001 through -004. 4. Check if Vt is higher than the upper threshold (specified in SP3-211-002). Incorrect: Vt is higher than the upper threshold Correct: Vt is equal to or lower than the upper threshold Troubleshooting procedure: 1. Check all the connectors are firmly connected. If not, reconnect the connectors. Check if the SC reoccurs by cycling the power off/on. If the SC reoccurs, go to the next step. 2. Check the development unit (e.g. Gear/harness disconnected? Heat protection seal removed? Using an old PCDU?). If not good, replace the PCDU. If the SC reoccurs, go to the next step. 3. Check the TD sensor. If not good, replace the TD sensor. If the SC reoccurs, go to the next step. 4. Check the parameters (e.g. SP3-030-061 through -064 should be changed from its initial value, but could be not changed due to possible NVRAM clearing). If not good, replace the PCDU and initialize the developer. This corrects the TD sensor settings. 5. Check the toner supply unit, especially if the image density is too low. If the toner bottle is empty, the toner supply route is clogged, and/or the toner supply motor operates incorrectly, then correct the problem. If the SC reoccurs, go to the next step. 6. Check the harness connection. If not good, replace the harness between BiCU and PCDU. 7. Replace the BiCU.

• Code: 361-04
• Description: TD sensor (Vt) upper limit error 1: Ye. The machine detects that Vt (TD sensor output, SP3-210-001) is higher than the upper limit threshold (specified in SP3-211-002) for the specified consecutive times in SP3-211-003.
• Causes: • TD sensor connector is disconnected
• Remedy: To check if the issue is resolved: 1. Cycle the power off/on. 2. Feed one sheet of paper. 3. Check Vt with SP3-210-001 through -004. 4. Check if Vt is higher than the upper threshold (specified in SP3-211-002). Incorrect: Vt is higher than the upper threshold Correct: Vt is equal to or lower than the upper threshold Troubleshooting procedure: 1. Check all the connectors are firmly connected. If not, reconnect the connectors. Check if the SC reoccurs by cycling the power off/on. If the SC reoccurs, go to the next step. 2. Check the development unit (e.g. Gear/harness disconnected? Heat protection seal removed? Using an old PCDU?). If not good, replace the PCDU. If the SC reoccurs, go to the next step. 3. Check the TD sensor. If not good, replace the TD sensor. If the SC reoccurs, go to the next step. 4. Check the parameters (e.g. SP3-030-061 through -064 should be changed from its initial value, but could be not changed due to possible NVRAM clearing). If not good, replace the PCDU and initialize the developer. This corrects the TD sensor settings. 5. Check the toner supply unit, especially if the image density is too low. If the toner bottle is empty, the toner supply route is clogged, and/or the toner supply motor operates incorrectly, then correct the problem. If the SC reoccurs, go to the next step. 6. Check the harness connection. If not good, replace the harness between BiCU and PCDU. 7. Replace the BiCU.

• Code: 362-01
• Description: TD sensor (Vt) lower limit error: Bk. The value of Vt (SP3-210-003) is lower than the threshold (SP3-211-004) for times specified in SP3-211-005.
• Causes: • TD sensor connector is disconnected.
• Remedy: • Check the connection of the TD sensor connector. • Check if the TD sensor harness is connected firmly. • Replace the TD sensor if any abnormality is found.

• Code: 362-02
• Description: TD sensor (Vt) lower limit error 1: Cy. The value of Vt (SP3-210-003) is lower than the threshold (SP3-211-004) for times specified in SP3-211-005.
• Causes: • TD sensor connector is disconnected.
• Remedy: • Check the connection of the TD sensor connector. • Check if the TD sensor harness is connected firmly. • Replace the TD sensor if any abnormality is found.

• Code: 362-03
• Description: TD sensor (Vt) lower limit error 1: Ma. The value of Vt (SP3-210-003) is lower than the threshold (SP3-211-004) for times specified in SP3-211-005.
• Causes: • TD sensor connector is disconnected.
• Remedy: • Check the connection of the TD sensor connector. • Check if the TD sensor harness is connected firmly. • Replace the TD sensor if any abnormality is found.

• Code: 362-04
• Description: TD sensor (Vt) lower limit error 1: Ye. The value of Vt (SP3-210-003) is lower than the threshold (SP3-211-004) for times specified in SP3-211-005.
• Causes: • TD sensor connector is disconnected.
• Remedy: • Check the connection of the TD sensor connector. • Check if the TD sensor harness is connected firmly. • Replace the TD sensor if any abnormality is found.

• Code: 370-00
• 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: To check if the issue is resolved: • Do Vsg adjustment (SP3-320). • Check the result in SP3-323-001. Correct: The result is “1” Incorrect: The result is not “1” Troubleshooting procedure: 1. Check all the connectors are firmly connected. If not, reconnect the connectors. Check if the SC reoccurs by cycling the power off/on. If the SC reoccurs, go to the next step. 2. Clean the detecting part of the ID sensor • Do not wipe with a dry cloth. (page 191 "Maintenance Tables") If the SC reoccurs, go to the next step. 3. Check the ID sensor shutter. If the shutter does not move correctly, replace the shutter solenoid. If the SC reoccurs, go to the next step. 4. Replace the drum and/or ITB if the following is found: Scratches, toner filming, wavy belt, or insufficient cleaning 5. Replace the ID sensor. If the SC reoccurs, go to the next step. 6. Check and connect the related harness if it is disconnected. 7. Replace the BiCU.

• Code: 396-00
• Description: Bk drum motor error. The motor LOCK signal is not detected for more than 2 seconds while the motor START signal is on.
• Causes: • PCDU overload • Drum motor (K) failure (SC396) • Drum motor (CMY) failure (SC397)
• Remedy: • Replace the PCDU. • Replace the drum motor (K) (SC396) • Replace the drum motor (CMY) (SC397)