The AKAI AP-D30 is a direct-drive turntable. This one would not hold a constant speed. I adjusted it and it got better, but the control loop voltages were all over the place. When in doubt, and the patiend hails from the early eighties... recap.
And there's a typo in the service manual.
Short J1 pins 3, 4 and 8, set VR4 to -100mV on pin 1. Short J1 pins 6, 7 and 8, set VR3 for -100mV on pin 2.
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