• Code: U6-84
• Description: Room humidity thermistor breakdown. Humidity thermistor open or short
• Causes: Humidity thermistor harness connection trouble Humidity thermistor trouble A3 2-stage LCT control PWB trouble
• Remedy: Check connection of the harness and the connector of the humidity thermistor. Replace the temperature and humidity sensor. Check the A3 2-stage LCT control PWB.

• Code: U7-50
• Description: MFPC PWB - Vendor machine communication error. Communication error between the MFP and the serial vendor.
• Causes: Improper setting of the vendor machine specifications (SIM26-3). Vendor machine trouble. MFPC PWB trouble. Connector, harness connection trouble. Strong external noises.
• Remedy: Cancel the error by turning OFF/ON the power. Check the connector and the harness in the communication line. Change the specifications of the vendor machine (SIM26-3). Replace the MFPC PWB.

• Code: U7-51
• Description: Vendor machine error. MFP (Notification of a trouble from the serial vendor)
• Causes: Serial vendor machine trouble. Connector, harness connection trouble.
• Remedy: Err.XX is displayed on the operation panel of the vendor. (XX is the detail code.) Repair the vendor machine referring to the detail code. Check the connector and the harness in the communication line.

• Code: U9-01
• Description: Touch panel trouble
• Causes: Harness connection trouble MFP PWB trouble Touch panel trouble
• Remedy: Check the connector and the harness in the touch panel line Replace MFP PWB Replace Touch panel

• Code: UC-02
• Description: CPT - ASIC error
• Causes: SCN Mother PWB trouble. (CPT-ASIC trouble.)
• Remedy: Replace the SCN Mother PWB.

• Code: UC-12
• Description: CPT - ASIC abnormal trouble (DSPF detection). Access abnormality to the CPT - ASIC (when the ASIC operates abnormally)
• Causes: B to B connector connection trouble. DSPF PWB trouble. CPT - ASIC trouble.
• Remedy: Check the B to B connector. Replace the DSPF PWB or the Option PWB.

• Code: UC-20
• Description: DOCC ASIC error
• Causes: SCN Mother PWB trouble. (DOCC-ASIC trouble.)
• Remedy: Replace the SCN Mother PWB.

• Code: UC-30
• Description: Anti-copy MODULE trouble (DSPF detection). Access abnormality to the DOCC-ASIC (when the ASIC operates abnormally)
• Causes: B to B connector connection trouble. DSPF PWB trouble. DOCC-ASIC trouble.
• Remedy: Check the B to B connector. Replace the DSPF PWB or the Option PWB.