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Acer AF705 Service Manual
Also see for AF705: User guide
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Contents
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18Fig56. VIDEO AMP. CIRCUITA. VIDEO PRE. AMP.The video pre-amp IC is U201(LM1269). The input signal is 0.7Vpp, then pre-amp IC U201amplify the video signal to 3~4Vpp. The U201 is controlled by up via I2 C bus, Fig5 is theblock diagram.B. VIDEO AMPLIFIERThe video amplifier is U203(LM2467), it amplify video signal to about 40Vpp. Videooutput signal add to cathode by AC coupling, Fig6 is the block diagram.. The DC bias iscontrolled by the IC U204(LM2480), Fig7 is the block diagram..Fig 6 is the block diagram |
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