Datasheet

MAX31855 Evaluation Kit
Evaluates: MAX31855
5Maxim Integrated
Troubleshooting
All effort was made to ensure that each EV kit works on the first try directly out of the box. In the rare occasion that a
problem is suspected, see the table below to help troubleshoot the issue.
SYMPTOM CHECK SOLUTION
GUI says hardware not found.
Is the LED labeled D1 on?
Ifyes,thentheelectronicfuse,U7,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 D2 turn
green when the GUI is running?
If not, then exit the GUI and try running it again. If D2
still does not turn green, then exit the GUI and try con-
necting the USB cable to a different USB port on the
PC and wait for a Windows message that states the
hardware is ready to use. Run the GUI again.
Are any of the LEDs illuminated?
If not, then the PCB may not be getting power from
USB. Try a different USB cable or a different USB port.
GUI appears to work, but the raw
data is all zeros.
Jumper (J4)
Make sure jumper, J4, is installed and connected to the
correct channel.
The “Fault” and “Open Circuit”
indicators are red in the Alarm
Status section of the GUI.
Is the thermocouple connected?
Verify that the thermocouple is connected (to the cor-
rect channel).