1. General Information

• Part Number: JANCD-SP17B, DF8203304-B0

• Manufacturer: Yaskawa Electric / Motoman Robotics

• Product Type: CRT and MDI display control board

• Core Functions: Monochrome CRT driving, keyboard signal processing, front panel I/O and status LED control, data communication with main controller

• Applicable Systems: Early versions of YASNAC LX / MX CNC systems and Motoman ERC robot controllers, matched with monochrome CRT operator panels

• Product Status: Discontinued. Only used and refurbished units are available on the market

• Product Position: A legacy interface board, serving as the earlier model of JANCD-SP20 series

2. Technical Specifications

Electrical Parameters

• Power Supply: +5 V DC and +12 V DC from the system backplane

• Maximum Current Draw: Approximately 1.2 A

• Video Signal: Monochrome CRT output signal

Environmental Parameters

• Operating Temperature: 0 °C to 45 °C

• Storage Temperature: -20 °C to 60 °C

• Relative Humidity: 5% to 85%, non-condensing

Physical Parameters

• Mounting Form: Standard plug-in card for Yaskawa backplane slot

• Weight: About 0.95 kg

3. Main Functions

1. CRT Display Control

   It provides driving and timing signals for monochrome CRT monitors, and outputs system text content, running status, alarm codes and parameter information to the display screen.
2. Keyboard Signal Processing

   Scans the key matrix of the external keypad, completes signal debounce and code conversion, and transmits valid operation commands to the main control unit.
3. Front Panel I/O Management

   Processes signals from panel mode switches and physical buttons, and drives multiple LED indicators to display power status, system operation and fault alerts.
4. System Data Communication

   Acts as a data transmission bridge between the human-machine panel and the main controller, realizing two-way data interaction.

4. Compatibility

Compatible Devices

• Early YASNAC LX, MX series CNC controllers

• Early revision Motoman ERC robot controllers

• Supporting monochrome CRT monitor and matched keypad

Incompatible Devices

• XRC, NX100, DX series and other new-generation Motoman robot controllers

• SP20C, SP21, SP23 and other later upgraded interface boards

5. Installation Steps

1. Cut off the total power of the controller and wait at least 5 minutes for the internal capacitors to fully discharge.

2. Wear an anti-static wrist strap to prevent static electricity from damaging electronic components.

3. Align the board with the designated slot on the backplane and insert it firmly, then tighten the fixing screws.

4. Connect the CRT video cable and keypad connecting cable to the corresponding interfaces on the board.

5. Restore the system power supply, then check the display effect, keypad response and LED status to confirm normal operation.

6. Troubleshooting

No display on CRT monitor

Keypad fails to respond

LED indicators do not light up

System cannot detect the board

7. Maintenance and Safety Notes

• Always cut off the power supply before disassembling, inspecting or replacing the board.

• Static protection measures must be taken during all handling procedures.

• Do not plug or unplug any connecting cables when the system is powered on.

• Keep the board and connectors clean, away from dust, moisture and corrosive substances.

• Conduct regular inspection on cables and connectors to avoid poor contact caused by aging or wear.

8. Disclaimer