AC711 Monitor Service Guide
Page 11
... horizontal frequency range is from 30khz to 70khz, and the refresh rate is the function block diagram of video pre-amp circuit. (4) +53V: For B+ Boost circuit. (5) +80V: For video circuit (6) 9.2V: for MIRCO- The circuit includes four major parts, the power supply ...
... horizontal frequency range is from 30khz to 70khz, and the refresh rate is the function block diagram of video pre-amp circuit. (4) +53V: For B+ Boost circuit. (5) +80V: For video circuit (6) 9.2V: for MIRCO- The circuit includes four major parts, the power supply ...
AC711 Monitor Service Guide
Page 17
... vertical sawtooth signal from TDA4856 to TDA8172, then TDA8172 produce vertical deflection current. Meanwhile TDA4856 output. HORIZONTAL OUTPUT STAGE F HORIZONTAL PROCESSOR Fig 3 is the block diagram of IC TDA4856. BDRV signal (IC pin 6) that can control B+ voltage. VERTICAL OUTPUT Fig 4 is the block...
... vertical sawtooth signal from TDA4856 to TDA8172, then TDA8172 produce vertical deflection current. Meanwhile TDA4856 output. HORIZONTAL OUTPUT STAGE F HORIZONTAL PROCESSOR Fig 3 is the block diagram of IC TDA4856. BDRV signal (IC pin 6) that can control B+ voltage. VERTICAL OUTPUT Fig 4 is the block...
AC711 Monitor Service Guide
Page 20
AMP. The input signal is U203(LM2467), it amplify video signal to about 40Vpp. B. The DC bias is controlled by up via I2C bus, Fig5 is the block diagram. The U201 is controlled by the IC U204(LM2480), Fig7 is U201(LM1269). VIDEO AMPLIFIER The video amplifier is 0.7Vpp, then pre-amp IC U201 amplify the video signal to cathode by AC coupling, Fig6 is the block diagram Fig5 20 Fig 6 is the block diagram.. CIRCUIT A. Video output signal add to 3~4Vpp. VIDEO PRE. VIDEO AMP. The video pre-amp IC is the block diagram.. 6.
AMP. The input signal is U203(LM2467), it amplify video signal to about 40Vpp. B. The DC bias is controlled by up via I2C bus, Fig5 is the block diagram. The U201 is controlled by the IC U204(LM2480), Fig7 is U201(LM1269). VIDEO AMPLIFIER The video amplifier is 0.7Vpp, then pre-amp IC U201 amplify the video signal to cathode by AC coupling, Fig6 is the block diagram Fig5 20 Fig 6 is the block diagram.. CIRCUIT A. Video output signal add to 3~4Vpp. VIDEO PRE. VIDEO AMP. The video pre-amp IC is the block diagram.. 6.
