• Code: 47
• Description: Developer Cartridge Fuse Error
  The machine could not blow the fuse.
• Remedy: 1. Verify the toner cartridge is set correctly. 2. Check the point of contacts between toner cartridge and Connect A PCB (P86). 3. Check the contact between Connect A PCB (P80C) and the main board. 4. Replace the toner cartridge. 5. Replace the Connect A PCB. 6. Replace the main control PCB.

• Code: 5XX
• Description: Version mismatching error
  - This error occurs when an optional CF memory card is attached to the network board, and the firmware version on the CF memory card and network board do not match.
• Remedy: 1. Update the ROM using the USB memory automatically. 2. Replace the storage (HDD/CF card).