Category Archives: Troubleshooting

Fully test the system.

Repair/Replace faulty device(s).

Test the remaining devices.

Eliminate the devices that could not cause this output.

Eliminate the devices that could not cause this output.

Check all connections.

Analyze the path(s) from input(s) to output(s).

Verify that those inputs are as expected.

Figure out which input(s) affect that output(s).

Determine which output(s) are incorrect.