• Code: U7-51
• Description: Serial vendor operation trouble. Serial vendor breakdown
• Causes: Serial vendor breakdown3
• Remedy: "Err.XX" (XX: Section code) is displayed on the vendor operation panel. The error generating condition and the cancel method differ depending on the detail code. Refer to the operation manual of the vendor.

• Code: U9-00
• Description: Communication trouble between the controller and the operation. Communication establishment error / Framing / Parity / Protocol error
• Causes: Slave unit PWB connector connection trouble. Harness trouble between the slave unit PWB and the ICU PWB. Connector pin breakage of the mother board of the slave unit PWB.
• Remedy: Check connection of the connector and the harness between the slave unit PWB and the ICU PWB. Check the earth wire of the machine.

• Code: UC-02
• Description: CPT-ASIC abnormality. Access error to the CPT-ASIC (The ASIC does not operate normally)
• Causes: B to B connector connection abnormality. SCU PWB abnormality. CPT-ASIC abnormality.
• Remedy: Check the B to B connector. Replace the SCU PWB, or replace the option PWB.

• Code: UC-12
• Description: CPT-ASIC abnormality (DSPF detection)
• Causes: B to B connector connection abnormality. DSPF PWB abnormality. CPT-ASIC abnormality
• Remedy: Check the B to B connector. Replace the DSPF PWB, or replace the option PWB.

• Code: UC-20
• Description: Anti copy module trouble. Communication error between the SCU and the DOCC. Communication test error when turning on the power or after canceling the exclusive simulation.
• Causes: Contact trouble or disconnection of the connector and the harness. Control PWB (SCU) trouble or DOCC PWB trouble. Malfunction due to noises.
• Remedy: Turn OFF /ON the power to cancel. Check the connector and the harness of the communication line. Replace the SCU PWB or replace the DOCC PWB.

• Code: UC-21
• Description: The DOCC (Document control) PWB is not detected
• Causes: The DOCC (Document control) PWB is not installed in the DSK model. Connection detection signal trouble.
• Remedy: Check the connection detection signal of the DOCC (Document control) PWB, or replace the PWB.

• Code: UC-22
• Description: CPT PWB is not detected. The CPT PWB is not detected under the color kit enable state
• Causes: The CPT PWB is not installed under the color kit enable state, or the connection detection signal trouble.
• Remedy: Check the connection detection signal of the CPT PWB, or replace the PWB.

• Code: UC-30
• Description: Anti copy module trouble (DSPF detection)
• Causes: B to B connector connection abnormality. DSPF PWB abnormality, DOCC-ASIC abnormality.
• Remedy: Check the B to B connector. Replace the DSPF PWB, or replace the option PWB.