• Code: C1800
• Description: Paper Feeder communication error Object: Paper feeder or Large capacity feeder 1. Communication error was detected 10 times continuously. 2. The ready signal is not notified from the paper feeder or the large capacity feeder within 6s after communication starts
• Remedy: 1 Checking the connection The cable is not properly connected to the main unit. Reconnect the cable into the main unit. 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. . PF PWB - Engine PWB Section 8 "PWBs" 3 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 4 Replacing the PF PWB The PF PWB is faulty. Replace the PF PWB. Detaching and reattaching the PF PWB 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C1820
• Description: Side deck communication error Object: Side deck 1. Communication error was detected 10 times continuously. 2. The ready signal is not notified from the side deck within 6s after communication starts.
• Remedy: Checking the connection It is not properly connected to the main unit. Reconnect to the main unit. 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. . PF PWB - PF PWB (Side deck) Section 8 "PWBs" 3 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 4 Checking the PF PWB (side deck) The PF PWB (in the side deck) is faulty. Replace PF PWB (Side deck). Detaching and reattaching the PF PWB (Side deck) 5 Replacing the PF PWB The PF PWB is faulty. Replace the PF PWB. Detaching and reattaching the PF PWB 6 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C1900
• Description: Paper Feeder EEPROM error Object: Paper feeder or Large capacity feeder For internal count The writing data and the reading data mismatch 3 times continuously when writing.
• Remedy: 1 Reconnecting the paper feeder It is not properly connected to the main unit. Reinstall the paper feeder to the main unit. PF-7100 / PF-7110 Installation Guide 2 Checking the connection The connector is not connected properly, or the wire is faulty. Reconnect the connector of the wire between the engine PWB and the PF PWB. If the wire is faulty, repair or replace it. If not resolved, replace the PF PWB. Section 8 "PWBs" Detaching and reattaching the PF PWB 3 Replacing the PF PWB The PF PWB is faulty. Replace the PF PWB. Detaching and reattaching the PF PWB 4 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C1920
• Description: Side deck EEPROM error Object: Side deck For internal count The writing data and the reading data mismatch 3 times continuously when writing.
• Remedy: 1 Reconnecting the side deck It is not properly connected to the main unit. Reinstall the side deck to the main unit. PF-7120 Installation Guide 2 Checking the connection The connector is not connected properly, or the wire is faulty. Reconnect the connector of the wire between the engine PWB and the PF PWB (side deck). If the wire is faulty, repair or replace it. If not resolved, replace the PF PWB. Section 8 "PWBs" 3 Replacing the PF PWB The PF PWB is faulty. Replace PF PWB (Side deck). Detaching and reattaching the PF PWB (Side deck) 4 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C1950
• Description: Primary transfer unit EEPROM error 1. Five times consecutive detection of no response from the device for more than 5ms on reading / writing. 2. Data read in 2 places does not match 8 consecutive times. 3. Writing data and reading data does not match 8 consecutive times.
• Remedy: 1 Reinstalling the primary transfer unit The primary transfer unit is not properly installed. Reinstall the primary transfer unit. Detaching and reattaching the Primary Transfer Unit 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. . Primary transfer unit - Transfer PWB . Transfer PWB - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 3 Primary transfer unit replacement The primary transfer unit is faulty. Replace the primary transfer unit. Detaching and reattaching the Primary Transfer Unit 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: C2102
• Description: Developer motor CY error 1. After the developer motor CY drive starts, the ready signal does not reach to L level even passing 2s. 2. After the developer motor CY stabilizes, the ready signal shows H level for 2s continuously.
• Remedy: 1 Checking the developer drive section The developer drive section is faulty. Replace the developer unit drive gear if it is faulty. 2 Checking the developer roller The developer roller is faulty. Check if the developer roller rotates, and replace the developer unit if not rotating. Detaching and reattaching the Developer Unit 3 Checking the drive parts The drive from the developer motor is not transmitted properly. Execute U030 [DLP(CMY)] to check the developer motor CY operation. Check if the drive gears rotate and have no excessive load, and apply the grease (EM-LP, Part no: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly. Maintenance Mode List 4 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. . Developer motor CY - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 5 Checking the developer motor The developer motor is faulty. Reattach developer motor CY. If not repaired, replace it. 6 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 7 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 8 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C2103
• Description: Developer motor M error 1. After the developer motor M drive start, the ready signal does not reach to L level even passing 2s. 2. After the developer motor M stabilize, the ready signal shows H level for 2s continuously.
• Remedy: 1 Checking the developer drive section The developer drive section is faulty. Replace the developer unit drive gear if it is faulty. 2 Checking the developer roller The developer roller is faulty. Check if the developer roller rotates, and replace the developer unit if not rotating. Detaching and reattaching the Developer Unit 3 Checking the drive parts The drive from the developer motor is not transmitted properly. Execute U030 [DLP(CMY)] to check the developer motor M operation or the developer motor M operation. Check if the drive gears rotate and have no excessive load, and apply the grease (EM-LP, Part no: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly. Maintenanc e Mode List 4 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. . Developer motor M - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 5 Checking the developer motor The developer motor is faulty. Reattach developer motor M. If not repaired, replace them. Maintenanc e Mode List 6 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 7 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 8 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB

• Code: C2201
• Description: Drum motor K steady-state error The ready signal is at the H level for 2s continuously after drum motor K becomes stable.
• Remedy: 1 Checking drum motor K The drum motor K drive is faulty. Execute U030 [Drum K] to check the drum motor K operation. Check if the drive gears rotate and have no excessive load, and apply the grease (EM-LP, Part no: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly. Maintenance Mode List 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. . Drum motor K - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 3 Checking drum unit K The drum unit is faulty. Check if the drum or the drum screw is rotated manually, and replace the drum unit if not rotated. Detaching and reattaching the Drum Unit 4 Checking drum motor K Drum motor K is faulty. Replace drum motor K. 5 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 6 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 7 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB