Kyocera FS-2020D, FS-3920DN, FS-4020DN - Service Manual

This manual for the KYOCERA FS-2020D/FS-3920DN/FS-4020DN provides detailed diagrams, pictures, and comprehensive procedures for diagnosing and repairing your copier. It is a valuable resource for both professional mechanics and DIY enthusiasts.

You can easily print, zoom, or read any diagram, picture, or page from this Service Manual. Each chapter contains fully detailed information, including simulation codes, trouble codes, maintenance procedures, reset procedures, and diagnostic procedures for the photocopier.

The table of contents includes:

• 1-1 SPECIFICATIONS
  • 1-1-1 Specifications
  • 1-1-2 Parts names
    • Overall
    • Operation panel
  • 1-1-3 Machine cross section
• 1-2 INSTALLATION
  • 1-2-1 Installation environment
  • 1-2-2 Unpacking
    • Unpacking
  • 1-2-3 Installing the expanded memory (option)
  • 1-2-4 Installing the memory card (option)
• 1-3 MAINTENANCE MODE
  • 1-3-1 Maintenance mode
    • Executing a maintenance item
    • Contents of maintenance mode items
    • Printing an event log (EVENT LOG)
• 1-4 TROUBLESHOOTING
  • 1-4-1 Paper misfeed detection
    • Paper misfeed indication
    • Paper misfeed detection
  • 1-4-2 Self-diagnostic function
    • Self-diagnostic function
    • Self diagnostic codes
  • 1-4-3 Image formation problems
    • Completely blank printout
    • All-black printout
    • Dropouts
    • Black dots
    • Black horizontal streaks
    • Black vertical streaks
    • Unsharpness
    • Gray background
    • Dirt on the top edge or back of the paper
    • Undulated printing at the left edge (scanning start position)
  • 1-4-4 Electric problems
• 1-5 ASSEMBLY AND DISASSEMBLY
  • 1-5-1 Precautions for assembly and disassembly
    • Precautions
    • Drum
    • Toner container
      • How to tell a genuine Kyocera Mita toner container
  • 1-5-2 Outer covers
    • Detaching and refitting the top cover
    • Detaching and refitting the right cover and left cover
  • 1-5-3 Paper feed section
    • Detaching and refitting the paper feed assembly (paper feed roller and pickup roller)
    • Detaching and refitting the retard roller
    • Detaching and refitting the registration upper and lower roller
    • Detaching and refitting the MP tray paper feed roller
  • 1-5-4 Developing section
    • Detaching and refitting the developing unit
  • 1-5-5 Drum section
    • Detaching and refitting the drum unit
    • Detaching and refitting the main charger unit
  • 1-5-6 Transfer/separation section
    • Detaching and refitting the transfer roller and separation charger brush unit
  • 1-5-7 Fuser section
    • Detaching and refitting the fuser unit
    • Detaching and refitting the fuser heater lamp
    • Detaching and refitting the heat roller
    • Detaching and refitting the press roller
    • Detaching and refitting the fuser thermistor 1/2 and thermal cutout
  • 1-5-8 PWBs
    • Detaching and refitting the engine PWB
    • Detaching and refitting the main PWB
    • Detaching and refitting the power source unit (PWB)
  • 1-5-9 Others
    • Detaching and refitting the paper feed drive unit
    • Detaching and refitting the main drive unit
    • Detaching and refitting the laser scanner unit
    • Direction of installing the principal fan motors
• 1-6 FIRMWARE
  • 1-6-1 Updating firmware
    • Updating the firmware from the USB memory
    • Updating the firmware from the memory card
• 2-1 Mechanical Construction
  • 2-1-1 Paper feed section
    • Paper cassette paper feed section
    • MP tray paper feed section
    • Paper feed conveying section
  • 2-1-2 Drum section
    • Drum section
  • 2-1-3 Expose section
    • Laser scanner unit
  • 2-1-4 Developing section
    • Developing section
  • 2-1-5 Transfer/separation section
    • Transfer/separation section
  • 2-1-6 Cleaning section
  • 2-1-7 Fuser section
    • Fuser unit
  • 2-1-8 Paper exit section/rear unit
    • Paper exit section/rear unit
  • 2-1-9 Duplex conveying section
    • Duplex conveying section
• 2-2 Electrical Parts Layout
  • 2-2-1 Electrical parts layout
• 2-3 Operation of the PWBs
  • 2-3-1 Power source PWB
  • 2-3-2 Engine PWB
• 2-4 Appendixes
  • Repetitive defects gauge
  • Wiring diagram (35 ppm printer)
  • Wiring diagram (40 ppm printer)
  • Wiring diagram (45 ppm printer)

Number of pages: 135