Hardware troubleshooting and repair guide
My MAPIO doesn’t start
You don’t see any of the two LEDs embedded on PCB1. Follow the next steps until you find the root cause.
With a multimeter, check that 5V is present on J1001 connector
Remove PCB2 and try to power your MAPIO. If the MAPIO can start now, your PCB2 is defective. Please check your PCB2 with the following guide.
Check that jumpers on P1003 and P1005 are correctly installed, as described in the Getting Started guide.
With a multimeter, check if 5V is present on P1003 connector, pin 3. If absent, check the fuse F1000.
Check that the Compute Module is correctly installed. Ideally, test with another Compute Module.
My USB device is not detected
The relay doesn’t work
The optocoupler doesn’t work
My PCB2 prevents my MAPIO from starting