Troubleshooting tDynamo device

Sometimes tDynamo devices are not recognized by the computer and the user may have to Reset the device.

Before proceeding to the process of resetting the device, the user may need to know some of the following operations of the device.

  1. The General Status LED blinks periodically to indicate the device is ready for the host to send a command or for a cardholder to swipe/insert or tap a card.
  2. The color of the blink indicates the battery level.
    • GREEN: Recharge if desired
    • AMBER(Yellow): Yellow color represents: Recharge soon
    • RED: Recharge immediately (device cannot process transactions)
  3. If all LEDs are off, the device is in Powered Off mode.
  4. If the General Status LED is solid RED and LED 3 is solid GREEN, the device is in Sleep Mode.
  5. To Power Off the device, press and hold the pushbutton for 5 to 10 seconds until all LEDs trun off and the device beeps twice.
  6. To power on the device or to wake it from Sleep Mode, tap the push button.

Push button is present at the right hand side of the device.

Push Button

Resetting the Device

When the tDynamo device does not respond to Reader Swipe WEB API calls or if it is not recognized in the Terminal list, the user may have to Reset the device.

To force the device to reset, use a small tool such as a paperclip to carefully press the reset switch recessed inside the small hole on the back of the device.

Reset Button

After resetting, the device progresses to Powered Off Mode. If the device is connected to USB power, it immediately progresses to Discoverable mode.

Discoverable mode is the device's normal waiting state.

Updated As Of Version 4.8.0.2