MPI Troubleshooting

These pics are being posted to help Gene help me diagnose my MPI problem...



This is the output of U2 pin 6. Approximately 1.4v pulses.




This pic is the input on U2p14. The rest of the input pins look similar.




U2 pin 4 (DB2) - ~ .2 - 3.5v
U2 pin 8 (DB5) - ~ .2 - 3.5v
U2 pin 9 (DB6) - ~ .2 - 3.5v
U2 pin 5 (DB7) - ~ .2 - 3.5v

U2 pin 2 (DB1), U2 pin 3 (DB0) and U2 pin 7 (DB4) - ~3.5vdc with no waveform to speak of