新配发的放映机，一般来说在出厂前都经过了认真的检查和调试，不会有什么大问题。但是，也绝不可马虎大意，大问题没有，小毛病也不可忽视。因此，新机器在使用前必须按照设备的技术要求，再一次认真检查和保养，并及时解决存在的问题，使其处于真正全新的工作状态。当接... The new distribution of the projector, in general, have been carefully checked and debug before leaving the factory, there will be no major problems. However, we must not be careless, big problems are not, and small faults can not be ignored. Therefore, before using the new machine must be in accordance with the technical requirements of the device, once again carefully check and maintain, and promptly solve the existing problems, so that it is truly a new working condition. When connected ...