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How to test LEDs and Buzzer on a contactless (Vivo) reader?

How to test LEDs and Buzzer on a contactless (Vivo) reader?

Oct 19, 2018

please run the following commands 

  1. enable passthrough mode command (2c-01) with data 01

  2. LED control command (0a-02) with data FF01

  3. Are the 4 LEDs on? if not, the LED(s) is(are) broken 

  4. Buzzer control command (0b-01) with data 03

  5. Are your hearing 3 short beeps? if not, the buzzer is broken.

  6. disable passthrough mode command (2c-01) with data 00