Remedy: 1 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 2 Resetting the main power The print engine ROM checksum is faulty. Turn off the power switch and the main power switch. After 5 seconds, turn on the main power switch and the power switch. 3 Checking the EEPROM The EEPROM is not properly attached. Reattach the EEPROM. 4 Checking the engine PWB The connector or the FFC is not connected properly. Or, the wire, FFC, the PWB is faulty. Clean the terminal of the connectors on the engine PWB, reconnect the connector of the wire, and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace it. If not resolved, replace the engine PWB.
Code: F052
Description: Panel engine program error
Causes: The panel program cannot start up.
Remedy: 1 Firmware upgrade The firmware is not the latest version. Upgrade the panel firmware to the latest version. 2 Resetting the main power The panel RAM checksum is faulty. Turn off the power switch and the main power switch. After 5 seconds, turn on the main power switch and the power switch. 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the connector on the operation panel main PWB and reconnect the connector. If there is no continuity, replace the wire. 4 Replacing the operation panel main PWB The operation panel main PWB is faulty. Replace the panel main PWB.
Code: F186
Description: Abnormal detection in the Video control section
Causes: There is an error in the communication between the main PWB and the engine PWB.
Remedy: 1 Resetting the main power As the power reset was performed instantly, an error occurred in the communication between the controller and the engine. 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 FFC is not connected properly. Or it is faulty. Clean the following FFC terminal of the FFC and reconnect. If the FFC terminal is deformed or FFC is short circuited, replace FFC. Engine PWB (YC35) - Main PWB (YC43) 3 Firmware upgrade The firmware is not the latest version. Upgrade the main firmware and the engine firmware to the latest version. 4 Replacing the main PWB The main PWB is faulty. Replace the main PWB. 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB.
Code: F278
Description: Error detection of the secondary power supply
Causes: 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. 3 Replacing the low voltage PWB The low voltage PWB is faulty. Replace the low voltage PWB.