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在对大多数品牌的影碟机进行调试和检修的时候,都要使机器进入测试程序(TEST PROGRAM),对先锋公司、夏普公司的影碟机来说,也称进入测试状态(TESTMODE),而对索尼公司产的影碟机来说则称进入维修状态(SERVICE MODE)。更换或检修激光头时,可通过利用测试状态来调整机器的有关电参数,有效地提高机器的性能。检修过的影碟机,经过正确调试后,一般都能达到出厂时的性能指标。反之,更换激光头后不经过调试,虽然大多数机器能工作,但并没有进入最佳状态,会出现不能播放LD碟片和CD片,选曲不准或音像效果不佳等现象。 一、先锋影碟机测试程序的设置方法 先锋公司生产的影碟机进入测试程序比较简单。打开机盖,在主线路板上仔细地寻找“TEST”或“TEST MODE”的标记。早期的影碟机,如先锋CLD-1190、CLD-1080、CLD-1590、CLD-1580、CLD-1750等,标记旁边有一个测试小棒。最近几年出厂的机器,如先锋CLD-S250、CLD-
When debugging and servicing DVD players of most brands, make sure the machine is in TEST PROGRAM and for Pioneer and SHARP players, it is also called TESTMODE. SONY DVD player is said to enter the maintenance status (SERVICE MODE). When replacing or overhauling the laser head, the relevant electrical parameters of the machine can be adjusted by using the test status to effectively improve the performance of the machine. Overhaul of the DVD player, after the correct debugging, the general can reach the factory performance indicators. On the contrary, after replacing the laser head without debugging, although most machines can work, but did not enter the best state, there will be no play LD discs and CD films, music is not allowed or poor audio and video effects and so on. A Pioneer DVD player test procedures set Pioneer’s DVD player into the test procedure is relatively simple. Open the lid and carefully look for the “TEST” or “TEST MODE” mark on the main circuit board. Early players, such as Pioneer CLD-1190, CLD-1080, CLD-1590, CLD-1580, CLD-1750, etc., have a test stick next to them. In recent years, the factory machines, such as the Pioneer CLD-S250, CLD-