• Code: 820-0001-05
• Description: Developer Upper Cooling Fan error
• Causes: The Fan stop signal is detected for 5 seconds or longer and retry is failed 4 times in a row although the Developer Upper Cooling Fan is turned ON.
• Remedy: [Related parts] - Harnesses from the Main Driver PCB to the Developer Upper Cooling Fan 1. Main Driver PCB (UN78/J130) to Relay Connector (17P) (Unit of replacement: CABLE, MAIN DRIVER, REAR UPPER) 2. Relay Harness (17P) (Unit of replacement: CABLE, RELAY, FRONT, CABLE, MAIN DRIVER, FRONT) 3. Relay Connector (17P) to Developer Upper Cooling Fan (FM31/J2171) (Unit of replacement: CABLE, FAN) - Developer Upper Cooling Fan (FM31) - Main Driver PCB (UN78) (Unit of replacement: MAIN DRIVE DRIVER PCB ASS'Y) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 820-0002-05
• Description: Duplex Driver Cooling Fan error
• Causes: The Fan stop signal is detected for 5 seconds or longer and retry is failed 4 times in a row although the Duplex Driver Cooling Fan is turned ON.
• Remedy: [Related parts] - Harnesses from the Duplex Driver PCB to the Transfer Cleaner Cooling Fan 1. Duplex Driver PCB (UN80/J340) to Relay Connector (3P) (Unit of replacement: CABLE, FIXING/ FEEDER DRAWER) 2. Relay Connector (3P) to Transfer Cleaner Cooling Fan (FM08/J2121) (Unit of replacement: CABLE, DUPLEXING FEED FAN) - Transfer Cleaner Cooling Fan (FM08) - Duplex Driver PCB (UN80) (Unit of replacement: DUPLEXING DRIVER PCB ASSEMBLY) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 824-0000-05
• Description: Primary Charging Air Supply Fan error
• Causes: The Fan stop signal is detected for 5 seconds or longer and retry is failed 4 times in a row although the Primary Charging Air Supply Fan is turned ON.
• Remedy: [Related parts] - Harnesses from the Main Driver PCB to the Primary Charging Air Supply Fan 1. Main Driver PCB (UN78/J130) to Relay Connector (17P) (Unit of replacement: CABLE, MAIN DRIVER, REAR UPPER) 2. Relay Harness (17P) (Unit of replacement: CABLE, RELAY, FRONT, CABLE, MAIN DRIVER, FRONT) 3. Relay Connector (17P) to Primary Charging Air Supply Fan (FM02/J2131) (Unit of replacement: CABLE, FAN) - Primary Charging Air Supply Fan (FM02) - Main Driver PCB (UN78) (Unit of replacement: MAIN DRIVE DRIVER PCB ASS'Y) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 840-0001-05
• Description: Fixing Shutter Motor error
• Causes: HP error of the Fixing Shutter was detected.
• Remedy: [Related parts] - Harnesses from the Fixing Drawer Unit to the Fixing Shutter HP Sensor 1. Fixing Drawer Unit (J3001) to Relay Connector (7P) (Unit of replacement: CABLE, FIXING DRAWER) 2. Relay Connector (7P) to Fixing Shutter HP Sensor (PS53/J2012) (Unit of replacement: CABLE, FIXING CLEANER) - Harnesses from the Fixing Drawer Unit to the Fixing Shutter Motor 1. Fixing Drawer Unit (J3001) to Relay Connector (4P) (Unit of replacement: CABLE, FIXING DRAWER) 2. Relay Connector (4P) to Fixing Shutter Motor (M15/J2014) (Unit of replacement: CABLE, MOTOR) - Harness between the Main Driver PCB (UN78/J104 and J105) and the Fixing Drawer Unit (J3001) (Unit of replacement: CABLE, FIXING DRAWER) - Fixing Shutter HP Sensor (PS53) - Fixing Shutter Motor (M15) - Fixing Upper Unit (Unit of replacement: FIXING ASS'Y, UPPER) - Main Driver PCB (UN78) (Unit of replacement: MAIN DRIVE DRIVER PCB ASS'Y) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 880-0001-00
• Description: Controller Fan error
• Causes: It was detected that the Controller Fan was locked.
• Remedy: [Related parts] - Controller Cooling Fan (FM04) - Main Controller PCB 1 (PWB01) (Unit of replacement: MAIN CONTROLLER PCB ASS'Y, 1) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check the connector of the Controller Cooling Fan. 2. Visually check that the Controller Cooling Fan is rotated. a. If it is not rotated, replace the Controller Cooling Fan. b. If it is rotated, replace the Main Controller PCB.

• Code: 881-0001-00
• Description: Board over heat error
• Causes: Abnormal temperature of the Main Controller CPU was detected.
• Remedy: [Related parts] - Main Controller PCB 1 (PWB01) (Unit of replacement: MAIN CONTROLLER PCB ASS'Y, 1) - Main Controller PCB 2 (PWB02) (Unit of replacement: MAIN CONTROLLER PCB ASS'Y, 2) [Remedy] Perform the following in the order while checking whether the error is cleared. a. If the error occurred during a service visit and then occurred again: 1. Replace the Main Controller PCB 1. 2. Replace the Main Controller PCB 2. [CAUTION] When replacing the Main Controller PCB 2, execute "Adjustment after the Main Controller PCB 2 replacement" in situation mode. b. If the error does not occur during a service visit but is found in the log: 1. Clean the inlet on the side where the fan is installed and remove dust. 2. Remove dust from the fan in the Controller Box. 3. If the space on the side where the fan is installed is less than 10 cm, ask the customer to secure enough space.

• Code: 905-0001-05
• Description: POD Deck Air Assist Fan error
• Causes: [POD Deck Lite] When the Air Assist Swing Motor fails to return to the HP although a specified period of time has passed
• Remedy: 1. Check connector disconnection/improper connection. => Disconnect and then connect the connector. Target connector: Deck Lite Controller J04, J05 BoxDriver J51, J52, J57 2. Replace the Swing Motor (M3) and the Air Assist Fan (FM1, FM2, FM3). 3. Replace the Deck Lite Controller PCB. 4. Replace the BoxDriver PCB.

• Code: 905-0002-05
• Description: POD Deck Air Assist Fan error
• Causes: [POD Deck Lite] When the Pickup Motor Cooling Fan is not locked
• Remedy: 1. Check connector disconnection/improper connection. => Disconnect and then connect the connector. Target connector: Deck Lite Controller J30 2. Replace the Motor Cooling Fan (FM4). 3. Replace the Deck Lite Controller PCB.