Akai AV-215T free download

File name AV-215T.pdf

Principle, Knowledge and Maintenance of AV215T (RU) Contents Chapter One Product Description Chapter Two Operating Principle Section One Overall Structure Section Two Volume Board Section Three Signal Processing Board Section Four CPU Board Section Five Control Panel Section Six Power Panel Section Seven Power Amplifier Board and Protection Circuit Chapter Three Maintenance Process Chapter One Product Description AV215T (RU) is an advanced power amplifier with complete functions that adds LCD to its predecessor as well as 16 kinds of spectrum displays in the sky-blue background which makes it more extraordinary. The radio reception makes this type of device the best choice for users who are fond of radios. Its main features are as follows: 1. Built-in 5-track power amplifier that can adapt to AC-3/DTS and stereo music playback. It is powerful with 80W main channel and 15W centre surround sound. 2. Mixing input interface of AC-3/DTS, VCD and DVD and DBB and stereo output interface. 3. 6-channel volume control and independent level control as well as 7-band EQ. 4. Bass Enhancer system, cyber logic and Hi-Fi playback. 5. One button for movie, music and karaoke. 6. Multiple EQ modes that adapt to different music styles. 7. Automatic spectrum analysis and compensation, automatic signal compensation. 8. Multiple spectrum display modes. 9. Complete karaoke function including microphone independent volume control, overall volume control, pitch adjustment, voice compensation, delay and echo adjustment as well as the newly added earphone output. 10. Karaoke wide sound field function. 11. Tuning function. 12. Intelligent protection of over-current and over-voltage. Chapter Two Operating Principle Section One Overall Structure AV215T (RU) mainly consists of the following seven parts: I. Volume Board: Select input signal source, cyber logic and bass enhancer. II. Signal Processing Board: Karaoke signal processing and 5.1CH signal amplification. III. CPU Board: Overall control, frequency point gating, automatic circuit search. IV. Control Panel: LCD display, remote control keyboard and backlight display. V. Power Panel and Protection Circuit: Provide operating voltage required by unit circuits and overall protection. VI. Power Amplifier Board: Power amplification of 5.1CH signal or analog signal. VII. Tuner: Receive radio signal and send to amplifier for signal-processing. Section Two Volume Board AV215T (RU) has four input modes: Radio input, VCD, DVD and 5.1CH. The cyber logic function of AV215T (RU) is to get C/SR/SL/SW track signals by sampling from L/R track and then proc