新科VCD－22C型影碟机集成电路维修参数
引脚符号功能电压在路电阻（kΩ）引脚符号功能电压在路电阻（kΩ）R测B测R测B测1P1整机面板状态指示显示屏阳极控制电压输出端，依次连接荧光显示屏阳极P1～P20相应引脚-16.7∞12.041ACK应答信号输出5.05.810.22P2-16.7∞12.542CMD命令控制信号输出5.05.810.23P3-16.7∞11.543EC本机接高电平5.03.45.54P4-16.7∞11.844SQCK子码Q的读出时钟输出5.04.98.55P5-16.7∞11.845OPEN开门状态检测开关控制电压5.15.7126P6-16.7∞11.546SUBQSQS0时钟信号输出4.14.813.57P7-16.7∞11.347NC空脚1.15.813.88P8-16.7∞11.348NC1.15.813.89P9-16.7∞11.049NC1.15.814.010P10-16.7∞11.050SENSE输出反映由地址指定的内部情况2.14.88.511P11-16.7∞11.051NC空脚1.15.814.012P12-16.7∞11.252NC1.05.814.013P13-16.7∞10.553LIMIT光头限位开关信号输入00.20.214P14-16.4∞10.854CLOSE机心关门状态控制信号输入05.715.015P15-16.7∞10.555KDIN0键盘扫描信号输入端5.05.715.016P16-22.3∞10.856KDIN15.05.914.517P17-22.3∞10.857KDIN25.05.914.518P18-22.3∞10.858KDIN35.05.713.019P19-22.3∞11.059FWD开门控制信号输出05.68.820P20-16.6∞10.860REV同上04.78.321NC空脚-22.3∞10.561FORK聚焦“OK”控制信号输入4.84.59.422NC-22.3∞11.562RMC遥控信号输入5.05.514.023NC-22.3∞11.563XLON微处理器扩展接口输出05.36.424G1荧光显示屏栅极驱动控制电压输出端，依次连接荧光屏栅极G1～G5-18.2∞12.064XLAT微处理器锁存信号输出5.04.88.525G2-18.2∞11.265DATA串行数据信号输出0.44.88.526G3-18.2∞11.066CLOCK时钟信号输出4.94.88.527G4-18.2∞11.067K-DATA键盘串行数据输出5.06.014.028G5-18.2∞10.868K-CLK键盘时钟信号输出06.014.029SCOR检测同步信号有无输出04.88.569NC空脚06.014.030TX外接32.768kHz晶振端2.55.514.070NC06.013.531TEX1.35.514.071VSS数字电路接地端00032RST复位信号输入端高电平有效05.712.572XTAL外接4.19MHz振荡晶振元件2.45.514.033NC0∞∞73NC0.1∞∞34VDD＋5V电源输入端5.13.45.274EXTAL2.25.514.535D0数据控制线输出端05.89.575VREF基准电压输入5.13.45.536D105.810.076VFDF荧光屏显示驱动电压输出-22.425.337D205.810.077SEL1选择输出控制端，本机通过固定电阻接地4.94.74.638D305.710.078SEL04.94.74.639WRN写入信号端5.05.710.079NC电源控制电压输出，开机后输出开机高电平电压5.0∞14.040REN请求信号输入端5.05.710.080POWER4.94.74.6此资料共2页,您当前位置是在第1页1
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