Is the output of the 5532 swinging equally above and below ground? Amplitude?
Do you have equal amplitude above and below ground at the input of both optocouplers?
Do you have approximately 15v amplitude out of both optocouplers? You'll need to use your scope in differential mode or use a handheld (battery powered) scope since neither is referenced to ground. AC coupling may tell you something but knowing that the drive is going back to 'ground' (the voltage on pin 5) would be good to know.
Do you have equal amplitude above and below ground at the input of both optocouplers?
Do you have approximately 15v amplitude out of both optocouplers? You'll need to use your scope in differential mode or use a handheld (battery powered) scope since neither is referenced to ground. AC coupling may tell you something but knowing that the drive is going back to 'ground' (the voltage on pin 5) would be good to know.
There's a break in the circuit. The voltage gain on the amplifier is some number constant. The reading for the output voltage is greater than the input voltage. This percentage is the voltage gain. So if the voltage gain is not there already, it's already a damaged circuit. Fixing it may be not able to do. Just get a new one.