This manual pertains to the QSC-3350 Professional Amplifier, offering original schematics for service. It is a comprehensive resource designed to assist users with the maintenance and repair of this audio equipment. The schematics provided are the most complete available, ensuring detailed insights into the amplifier's internal workings.

The purpose of this manual is to facilitate effective servicing by providing clear, manufacturer-written documentation. It is suitable for use by dealership mechanics and other technicians. Users have the flexibility to print specific pages for immediate repair needs or the entire document for comprehensive reference, ensuring all necessary information is readily accessible.