Juno-106 with strange voice behaviour

Hi everyone! I have a peculiar error with my juno-106 and I can’t really understand where it originates. When I perform the juno-106 test (JUNO-106 VCF, VCA and WAVE-GENERATOR test procedure) everything works fine except voice 3 on sawtooth which is a lot lower in volume and on higher ranges it plays the wrong note/octave. I have recorded the test here: https://drive.google.com/file/d/13o9IiXFDHCKIJBsuELIS0yfegjm2rip1/view?usp=drivesdk

Does anyone know what could be the cause of this issue? Bad wave generator? VCF/VFA?