Sharp MXM623U

• Code: U6-51
• Description: LCC - Main unit combination trouble
• Causes: Improper combination between the main unit and the LCC. LCC control PWB trouble.
• Remedy: Install a LCC which is proper for the main unit mode. Replace the LCC control PWB.

• Code: U7-50
• Description: MFP PWB - Vendor machine communication error
  Communication error between the MFP and the serial vendor.
• Causes: Improper setting of the vendor machine specifications (SIMI26-3). Vendor machine trouble. MFP 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 MFP 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: UC-02
• Description: IPD/DOCC ASIC IPD section error
• Causes: SCU PWB trouble (IPD/DOCC ASIC trouble).
• Remedy: Replace the SCU PWB.

• Code: UC-20
• Description: IPD/DOCC ASIC DOCC section error
• Causes: SCU PWB trouble (IPD/DOCC ASIC trouble).
• Remedy: Replace the SCU PWB.