Datasheet

Maxim Integrated

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MAX31790 Evaluation Kit Evaluates: MAX31790

www.maximintegrated.com

Troubleshooting

All efforts were made to ensure that each EV kit works on the first try, right out-of-the-box. In the rare occasion that a

problem is suspected, see Table 3 to help troubleshoot the issue.

Table 3. Troubleshooting

SYMPTOM CHECK SOLUTION

GUI indicates: Hardware

not found

IstheLEDlabeledD1lred?

If yes, then the electronic fuse is in a fault state. Inspect for electrical

shorts on the PCB and make sure that the PCB is not sitting on a

conductive surface.

DoestheLEDlabeledD2l

turn off when the GUI is

running?

If not, then exit the GUI and try running it again. If D2l still does not

turn off, then exit the GUI and power cycle the board by removing

and reapplying the user-supplied power source. Try connecting the

USB cable to a different USB port on the PC and wait for a Windows

message that states that the hardware is ready to use. Run the GUI

again. If D2l still does not turn off, unplug the USB cable and reboot

the PC. Connect the USB cable and open the GUI.

AreanyoftheLEDs

illuminated?

If not, then the PCB may not be getting power from the user-

supplied power supply. Verify the power-supply bias with a voltmeter,

measuring from VCC to GND. Valid levels are 3V to 5.5V.

GUI Status indicates: Error

communicating with the

MAX31790

Slave address jumper

conguration(J5,J6)

Checkthecurrentsettingoftheslaveaddressjumpercongurations

(J5, J6) and input the resulting slave address in the Slave ID (Hex)

input box, then pressing the Set button.