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DLPC3439: 开机屏闪问题

Part Number: DLP4710DLPC3439
Other Parts Discussed in Thread: DLPC3439

DLPC3439+4710方案,投影仪开机完成后,播放视频,首页界面都会在左半屏会出现竖直条纹屏闪,右半屏不会;直接打DLPC内部测试画面,不会出现闪屏;

视频数据采用LVDS转TTL方案,然后接入两片DLCP3439;

  • 检查一下PCB,晶振选型是否符合规格书要求,走线到两个DLPC的长度是否相等。

    前端视频信号输入线走线到两片DLPC3439的距离是否等长。

    如果硬件走线没有问题,排查一下是否Vsync信号抖动比较大。可以降低pixel clock。不一定要输入标准的60Hz信号,可以调整一下频偏。