Acer AC701 AC701 Monitor Service Guide - Page 14

5. DEFLECTION A. SYNC RPOCESSOR: H-sync & V-sync input to U1(up), then up output the H-out, V-out signal to U401 TDA4856. The H-out, V-out always are positive. B. HORIZONTAL PROCESSOR Fig 3 is the block diagram of IC TDA4856. The IC TDA4856 output vertical sawtooth and H-Drive signal to produce, H.V deflection. Meanwhile TDA4856 output. BDRV signal (IC pin 6) that can control B+ voltage. C. VERTICAL OUTPUT Fig 4 is the block diagram of IC TDA8172. Input vertical sawtooth signal from TDA4856 to TDA8172, then TDA8172 produce vertical deflection current. D. HORIZONTAL OUTPUT STAGE F