IRBSQ you not need to see, because the AG board without Q5, Q5 is null, it's design for a big power triode for send IR signal large current. it's a backup way for send IR signal.
if you want to analysis IR signal, you should use GPIO23, it's IR receiver pins, so that can dump IR signal from other device.
if you want to analysis IR signal, you should use GPIO23, it's IR receiver pins, so that can dump IR signal from other device.