Revox A720 Service Manual and Disassembly Instructions

Complete service manual for the Revox A720 FM tuner and audio preamplifier, providing technicians and experienced users with thorough repair and maintenance guidance. The workshop manual covers systematic disassembly of the tuner's mechanical and electrical assemblies, including the top and base covers, wooden side panels, front panel fascia, button rail assembly, and illuminated pushbutton mechanisms. Detailed lamp and fuse replacement procedures ensure safe component renewal. The manual includes comprehensive circuit descriptions across all major functional blocks: the RF front end, audio amplification stages, stereo decoder section, and local oscillator with frequency synthesizer architecture. Alignment and calibration instructions guide users through proper setup using standard test equipment, with specific procedures for IF filter alignment, RF circuit tuning, and stereo decoder optimization. Performance measurement protocols and complete technical specifications are provided to verify correct operation after service work. Essential reference for restoring and maintaining this classic Revox tuner to factory specifications.