• Code: F25X
• Description: Abnormality detecting in a network management department
• Remedy: Initialize HDD and perform an operation check. (FULL of U024) * Carry out U021 Main backup initialization and perform an operation check. Exchange a Main board and perform an operation check. Get USBLOG and packet capture and contact service headquarters. * It may occur according to a visitor's network environment. * Execution of U024 will vanish user data and the software installed. Reinstallation is required.

• Code: F26X
• Description: Abnormality detecting in the system Management Department
• Remedy: Initialize HDD and perform an operation check. (FULL of U024) * Carry out U021 Main backup initialization and perform an operation check. Exchange a Main board and perform an operation check. Exchange HDD and perform an operation check. * Get USBLOG and contact service headquarters. * Execution of U024 will vanish user data and the software installed. Reinstallation is required.

• Code: F278
• Description: Error detection of the secondary power supply The operation became unstable as the primary power supply temporarily drops off and recovers.
• Remedy: 1 Resetting the main power The power reset was performed instantly. Turn off the power switch and the main power switch. After 5 seconds, turn on the main power switch and the power switch. 2 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the connector on the low voltage PWB and reconnect the connector of the wire. If there is no continuity, replace the wire. Section 8 "PWBs" 3 Replacing the low voltage PWB The low voltage PWB is faulty. Replace the low voltage PWB. Detaching and reattaching the Low Voltage PWB

• Code: F2BX, F2CX, F2DX, F2EX
• Description: Abnormality detecting in a network control part
• Remedy: Initialize HDD and perform an operation check. (FULL of U024) * Carry out U021 Main backup initialization and perform an operation check. Exchange a Main board and perform an operation check. Get USBLOG and contact service headquarters. (Depending on an analysis result, it is packet capture acquisition) * Execution of U024 will vanish user data and the software installed. Reinstallation is required.

• Code: F2FX, F30X, F31X, F32X
• Description: Abnormality detecting in a network control part
• Remedy: Initialize HDD and perform an operation check. (FULL of U024) * Carry out U021 Main backup initialization and perform an operation check. Exchange a Main board and perform an operation check. Get USBLOG and contact service headquarters. (Depending on an analysis result, it is packet capture acquisition) * Execution of U024 will vanish user data and the software installed. Reinstallation is required.

• Code: F33X
• Description: Abnormality detecting in the Scan Management Department
• Remedy: Check the harness between Engine/DP<=>Main boards, and the connection state of a connector, and perform an operation check. Initialize HDD and perform an operation check. (FULL of U024) * U021 Controller backup initialization is carried out and an operation check is performed. Exchange a Engine/DP Driver board and perform an operation check. Exchange a Main board and perform an operation check. Get USBLOG and contact service headquarters. * Execution of U024 will vanish user data and the software installed. Reinstallation is required.

• Code: F34X
• Description: Abnormality detecting in the Panel Management Department
• Remedy: Check the harness between Panel<=>Main boards, and the connection state of a connector, and perform an operation check. Initialize HDD and perform an operation check. (FULL of U024) * U021 Controller backup initialization is carried out and an operation check is performed. Exchange a Panel board and perform an operation check. Exchange a Main board and perform an operation check. Get USBLOG and contact service headquarters. * Execution of U024 will vanish user data and the software installed. Reinstallation is required.

• Code: F35X
• Description: Abnormality detecting in the printing controlling Management Department
• Remedy: Initialize HDD and perform an operation check. (FULL of U024) * Carry out U021 Main backup initialization and perform an operation check. Exchange a Main board and perform an operation check. Exchange HDD and perform an operation check. * Get USBLOG and contact service headquarters. * Execution of U024 will vanish user data and the software installed. Reinstallation is required.