3-4 Microcontroller Communication Error

• Result 1 - The reading is 24V DC.
  Start 3-4-1-5.
• Result 2 - The reading is not 24V DC.
  Start 3-4-1-2.

3-4-1-2 - Reconnect the wires, and check if the readings become 24V.

• Result 1 - The reading is 24V.
  Start 3-4-1-3.
  
  
• Result 2 - The reading is not 24V.   
  Start 3-4-1-4.

3-4-1-3 - Boot up the machine, and verify the FW version.

• Result 1 - All FW versions are displayed with the right version.
  Start 3-4-2-8. (Root cause: The control board / the motor board / the power supply wires disconnected.)
  
  
• Result 2 - Any of the FW versions is displayed with 0000 (except the first 4 numbers after LEON).   
  Start 3-4-1-4.

3-4-1-4 - Check the LED lights are lit on the flowmeter board and/or the motor board.

• Result 1 - The LED lights are lit.
  Start 3-4-1-7.
  
  
• Result 2 - The LED lights are not lit.   
  Start 3-4-1-5.

3-4-1-5 - Unplug all the wires on the control board except the DC power supply, ethernet cable, micro USB cable, and touchscreen-related cables. Then connect the unplugged wires back to the control board one by one to find out which wire caused the short circuit.

• Result 1 - No short circuit is identified.
  Escalate to FAE.
     
• Result 3 - Short circuit from the wires.   
  Start 3-4-1-6.

3-4-1-6 - Identify the root cause for the short circuit and fix it. Reboot (turn off the machine and wait for 10 seconds), then check if the machine can load the Botrista Homepage without any issues, and verify the FW version.

• Result 1 - All FW versions are displayed with the right version.
  Start 3-4-2-8. (Root cause: Short circuit)
  
  
• Result 2 - The screen load up with issues.   
  Start 3-4-1-7.
     
• Result 3 - The motor board FW version is “0000”.   
  Start 3-4-2-4.
     
• Result 4 - The flowmeter board FW version is “0000”.   
  Start 3-4-2-6.
  
  

3-4-1-7 - Unplug all the wires on the control board except for the DC power supply, and the USB cable between Mini PC & the control board. Reboot (turn off the machine and wait for 10 seconds ), then check if The machine can load the Botrista homepage without any issues.

• Result 1 - The machine can load the Botrista homepage without any issues.
  Start 3-4-2-4.
  
  
• Result 2 - Issues appear (or “Table.undefined” appears).   
  Start 3-4-1-8.

3-4-1-8 - Reconnect the USB cable between the control board & mini PC, then reboot (turn off the machine and wait for 10 seconds) and check if the machine can load the Botrista homepage without any issues, and verify the FW version.

• Result 1 - The machine can start up without any issues, and all FW versions are shown with the correct version.
  Start 3-4-2-8. (Root cause: USB cable disconnected)
  
  
• Result 2 - Issues appear (or “Table.undefined” appears).   
  Start 3-4-2-1.

3-4-2-1 - Turn off the power, and check if the jumpers are correctly installed on the control board.

• Result 1 - All jumpers are correctly installed 
  Start 3-4-2-3. 
  
  
• Result 2 - Any jumpers are not correctly installed or missing.   
  Start 3-4-2-2. 

3-4-2-2 - Install incorrectly placed or missing jumpers to their correct positions. Turn on the power, then check if the machine can load the Botrista homepage without any issues, and verify the FW version.

• Result 1 - The machine can load the Botrista homepage without any issues, and all FW versions are displayed with the correct version.
  Start 3-4-2-8. (Root cause: Incorrectly placed or missing jumpers)
  
  
• Result 2 - Issues appear (or “Table.undefined” appears).     
  Start 3-4-2-3.

3-4-2-3 -Replace the control board (see SOP here). Turn on the power check if the machine can load the Botrista homepage without any issues, and verify the FW version.

• Result 1 - The machine can load the Botrista homepage without any issues, and all FW versions are displayed with the correct version.
  Start 3-4-2-8. (Root cause: Control board failure)
  
  
• Result 2 - Issues appear (or “Table.undefined” appears).   
  Escalate to FAE.
     
• Result 3 - The motor board FW version is “0000”.   
  Start 3-4-2-4.
     
• Result 4 - The flowmeter board FW version is “0000”.   
  Start 3-4-2-5.

3-4-2-4 - Reconnect the RJ45(RJ1 to RJ3 portal) cable between the control board & the motor board. Then reboot (turn off the machine and wait for 10 seconds) and verify the FW version.

• Result 1 - The machine can start up without any issues, and all FW versions are the correct version.
  Start 3-4-2-8. (Root cause: RJ45 cable between the control board and the motor board disconnected)
  
  
• Result 2 - The motor board FW version is “0000”.   
  Start 3-4-2-5.
       
• Result 3 - The flowmeter board FW version is “0000”.   
  Start 3-4-2-6.

3-4-2-5 - Replace the motor board (see SOP here). Reboot (turn off the machine and wait for 10 seconds) and reload the firmware, then check if the machine can load the homepage without any issues, and verify the FW version.

• Result 1 - All FW versions are displayed with the right version.
  Start 3-4-2-8. (Root cause: the motor board failure)
  
  
• Result 2 - The motor board FW version is “0000”.   
  Escalate to FAE.
• Result 3 - The flowmeter board FW version is “0000”.   
  Start 3-4-2-6.

3-4-2-6 - Reconnect the RJ45(RJ2 to RJ4 portal) cable between the motor board & the flowmeter board. Then reboot (turn off the machine and wait for 10 seconds) and verify the FW version.

• Result 1 - The machine can start up without any issues, and all FW versions are displayed with the right version.
  Start 3-4-2-8. (Root cause: Root cause: RJ45 cable between the motor board and the flowmeter board disconnected)
  
  
• Result 2 - The flowmeter board FW version is “0000”.   
  Start 3-4-2-7.

3-4-2-7 - Replace the flowmeter board (see SOP here). Reboot (turn off the machine and wait for 10 seconds) and flash the firmware,  then check if the machine can load the Botrista homepage without any issues, and verify the FW version.

• Result 1 - All FW versions are the correct version.
  Start 3-4-2-8. (Root cause: flowmeter board failure)
  
  
• Result 2 - The flowmeter board FW version is “0000”.   
  Escalate to FAE.

3-4-2-8 - Go to the “Control” page, and verify the functionality for every item. Then make a few drinks (covering all the ingredients) and verify the tastes.

• Result 1 - All the functionalities & drink tastes meet the standard.
  Issue closed.
  
  
• Result 2 - Motor board-related function is failed.   
  Restart 3-4-2-4. Escalate to FAE if the issue cannot be fixed after restarting 3-4-2-5.
  
  
• Result 3 - Flowmeter board-related function is failed.   
  Restart 3-4-2-6. Escalate to FAE if the issue cannot be fixed after restarting 3-4-2-7.