• Code: C0350
• Description: Panel PWB communication error (Electronic volume I2C communication error) Since NACK was received during the I2C communication, the retry was repeated 5 times and the initial command was transmitted, and then the retry was repeated 5 times again. After that, NACK was also received.
• Remedy: 1 Resetting the main power The operation of the operation panel main PWB is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Operation panel main PWB - Main PWB Section 8 "PWBs" 3 Replacing the operation panel main PWB The operation panel main PWB is faulty. Replace the panel main PWB. Detaching and reattaching the Operation Panel Main PWB 4 Replacing the main PWB The main PWB is faulty. Replace the main PWB. Detaching and reattaching the Main PWB

• Code: C0361
• Description: Communication error between the engine CPU and the feed ASIC The communication with the feed ASIC failed 10 times continuously.
• Remedy: 1 Resetting the main power The engine PWB does not operate properly. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Feed drive PWB - Engine PWB Section 8 "PWBs" 4 Replacing the feed drive PWB The feed drive PWB is faulty. Replace the feed drive PWB. 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C0362
• Description: Communication error between the engine CPU and the feed ASIC The communication with the feed ASIC failed 10 times continuously.
• Remedy: 1 Resetting the main power The engine PWB does not operate properly. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C0640
• Description: Hard Disk error The HDD cannot be accessed properly.
• Remedy: 1 Releasing the partial operation The partial operation is executed. Execute resetting the partial operation at U906. Maintenanc e Mode List 2 (When abnormal sounds occur) Replacing the HDD The HDD is faulty. Replace the HDD when the abnormal sounds are from the HDD. Detaching and reattaching the HDD 3 Checking the connection The connector is not connected properly. The SATA cable or the wire is faulty. Reconnect the below SATA cable and connector of the wire. If there is no continuity, replace SATA cable or the wire. - HDD - main PWB Section 8 "PWBs" 4 Initializing the HDD The HDD storage data is faulty. Execute U024 [FULL] (HDD Format). Maintenanc e Mode List 5 Replacing the HDD The HDD is faulty. Replace the HDD. Detaching and reattaching the HDD 6 Replacing the main PWB The main PWB is faulty. Replace the main PWB. Detaching and reattaching the Main PWB

• Code: C0660
• Description: Hard Disk encryption key error 1. The encrypted password entered when replacing the main PWB is not correct. 2. Install SSD which is used in the other machine.
• Remedy: 1 (When the issue occurs after replacing the main PWB) Executing U004 The encryption key after replacing the main PWB is faulty. Execute U004 when this issue occurs after replacing the main PWB. Maintenanc e Mode List 2 Replacing the HDD (abnormal sounds) The HDD is faulty. Replace the HDD when the abnormal sounds are from the HDD. Detaching and reattaching the HDD 3 Checking the connection The connector is not connected properly. The SATA cable or the wire is faulty. Reconnect the below SATA cable and connector of the wire. If there is no continuity, replace SATA cable or the wire. - HDD - main PWB Section 8 "PWBs" 4 Initializing the HDD The HDD storage data is faulty. Execute U024 [FULL] (HDD Format). Maintenanc e Mode List 5 Replacing the HDD The HDD is faulty. Replace the HDD. Detaching and reattaching the HDD 6 Replacing the main PWB The main PWB is faulty. Replace the main PWB. Detaching and reattaching the Main PWB

• Code: C0670
• Description: Hard Disk overwriting error The area that cannot be properly overwritten exists in a part of the HDD.
• Remedy: 1 Replacing the HDD (abnormal sounds) The HDD is faulty. Replace the HDD when the abnormal sounds are from the HDD. Detaching and reattaching the HDD 2 Checking the connection The connector is not connected properly. The SATA cable or the wire is faulty. Reconnect the below SATA cable and connector of the wire. If there is no continuity, replace SATA cable or the wire. - HDD - main PWB Section 8 "PWBs" 3 Initializing the HDD The HDD storage data is faulty. Execute U024 [FULL] (HDD Format). Maintenanc e Mode List 4 Replacing the HDD The HDD is faulty. Replace the HDD. Detaching and reattaching the HDD 5 Replacing the main PWB The main PWB is faulty. Replace the main PWB. Detaching and reattaching the Main PWB

• Code: C0680
• Description: SSD error The SSD cannot be accessed, or the error occurs when accessing to the SSD.
• Remedy: 1 Checking the SSD (if lit after replacing the SSD) An SSD out of specification is installed. Install the SSD matching the memory capacity specification. 2 Resetting the main power The SSD is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 3 Reinstalling the SSD The connection with the main PWB is faulty. Reinstall the SSD on the main PWB. Detaching and reattaching the SSD 4 Initializing the SSD The data stored in the SSD is faulty. Retrieve the SSD storage data at U026, and then initialize the SSD at U024. Maintenanc e Mode List 5 Replacing the SSD The SSD is faulty. Retrieve the SSD storage data at U026, and then replace the SSD. Maintenanc e Mode List Detaching and reattaching the SSD 6 Replacing the main PWB The main PWB is faulty. Replace the main PWB. Detaching and reattaching the Main PWB

• Code: C0800
• Description: Image processing error The print sequence jam (J010x) was detected 2 times continuously.
• Remedy: 1 Checking the image data The image data is faulty. When this issue occurs only when handling the certain image data, check if the image data is faulty. 2 Checking the situation The printing operation of the certain file is faulty. Acquire the jobslogifthephenomenoncanbere producedbyspecifyingthejobwhe ntheerrorwasdetected.' Checking Job & Job Operation (Operation Guide - Section 7) 3 Checking the main 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 main PWB, reconnect the connector of the wire, and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace them. If not resolved, replace the main PWB. Section 8 "PWBs" Detaching and reattaching the Main PWB