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针对目前国内大部分VO— 985 0P录象机长期使用后出现预卷时间不准确的故障 ,找到一种可行的排除故障方法 ,供同行们参考
For the majority of VO-985 0P domestic video recorders after the long-term use of pre-rolling time is not accurate fault, find a viable troubleshooting method for colleagues reference