• Code: E806 0200
• Description: Motor Fan error. Unlocked state was detected 2 consecutive times in 3 sec when the Motor Fan was driven
• Remedy: [Related parts] • Harness between the DC Controller PCB (UN04/J134) and the Motor Fan (FM03/J1342) (Unit of replacement: POWER SUPPLY ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Motor Fan (FM03) [Remedy] Check/replace the related harness/cable, connector and parts

• Code: E806 0201
• Description: Motor Fan error. A state of caught cable was detected within 15 sec when the Motor Fan was driven
• Remedy: [Related parts] • Harness between the DC Controller PCB (UN04/J134) and the Motor Fan (FM03/J1342) (Unit of replacement: POWER SUPPLY ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Motor Fan (FM03) [Remedy] Check/replace the related harness/cable, connector and parts

• Code: E808 0001
• Description: Zero cross signal detection error. After the start of the zero cross signal detection, the frequency between 43 Hz and 67 Hz could not be detected for 0.5 consecutive sec.
• Remedy: [Related parts] • Harness between the DC Controller PCB (UN04/J115) and the Low Voltage Power Supply PCB (UN01/J322) (Unit of replacement: POWER SUPPLY ASSEMBLY) • Low Voltage Power Supply PCB (UN01) (Unit of replacement: POWER SUPPLY ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. • Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP • Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES

• Code: E808 0002
• Description: Zero cross signal detection error. Error due to disconnection of the fixing loopback signal After the frequency of zero cross signal fell into the specified frequency band, the frequency between 43 Hz and 67 Hz could not be detected for 0.5 consecutive sec.
• Remedy: [Related parts] • Harness between the DC Controller PCB (UN04/J115) and the Low Voltage Power Supply PCB (UN01/J322) (Unit of replacement: POWER SUPPLY ASSEMBLY) • DC Controller PCB (UN04/J121) to Fixing Drawer (J1001) (Unit of replacement: FIXING DRAWER ASSEMBLY) • Low Voltage Power Supply PCB (UN01) (Unit of replacement: POWER SUPPLY ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Fixing Unit (Unit of replacement: FIXING ASSEMBLY) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. • Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP • Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES

• Code: E811 0000
• Description: Fuse in the Fixing Fuse PCB blowout error. The fuse in the Fixing Fuse PCB was not blown out at power-on.
• Remedy: [Related parts] • Fixing Fuse PCB (UN31) (Unit of replacement: FIXING FUSE PCB ASSEMBLY) • Fixing Unit (Unit of replacement: FIXING ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Harnesses from the DC Controller PCB to the Fixing Fuse PCB 1. DC Controller PCB (UN04/J121) to Fixing Drawer (J1001DB) (Unit of replacement: FIXING DRAWER ASSEMBLY) 2. Fixing Drawer (J1001LB) to Fixing Fuse PCB (Unit of replacement: CABLE, DRAWER RELAY) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. • Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP • Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES

• Code: E880 0001
• Description: Controller Fan error. It was detected that the Controller Fan was locked.
• Remedy: Replace the Main Controller PCB (UN05). (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY)

• Code: E881 0001
• Description: Board over heat error. It was detected that temperature of the CPU of the Main Controller PCB was abnormal.
• Remedy: [Related parts] Main Controller PCB (UN05) (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY) [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, replace the Main Controller PCB. 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: E890 0001
• Description: Temperature detection error. The Environment Sensor did not detect change in temperature.
• Remedy: [Related parts] • Harnesses from the DC Controller PCB to the Environment Sensor Unit 1. DC Controller PCB (UN04/J133) to Relay Connector (9P) (Unit of replacement: CABLE, SENSOR) 2. Relay Connector (9P) to Environment Sensor Unit (UN27/ J1107) (Unit of replacement: CABLE, INTERLOCK SWITCH) • Environment Sensor Unit (UN27) (Unit of replacement: ENVIRONMENT SENSOR ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. • Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP • Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES