Do you have a question about the Sansui TU-666 and is the answer not in the manual?
Aids in precisely tuning AM/FM stations by needle position.
Reduces noise on FM multiplex programs from weak/distant stations.
Mode switch for AM, FM MONO, and FM AUTO reception.
Guidance on checking and replacing the power fuse if needed.
Steps to adjust the unit's operating voltage for different regions.
Detailed steps for aligning the AM tuner's internal circuits.
Detailed steps for aligning the FM tuner's internal circuits.
Detailed steps for aligning the FM multiplex stereo circuitry.