如何在分析器中进行第二通道安装？

您好，我正在尝试在其中一个分析器中安装第二个通道，并且之前已经成功执行过两次这个mod。
现在显然有一些事情需要做，如果我正在处理一个序列号在3641A之前（或接近）的单位，根据在线手册我应该联系安捷伦出于某种原因。
症状是...安装任何第二个通道A20板后，设备将无法启动。
我已在内部打开选项并更改了A35主板上的单/双通道跳线，但仍然没有。
我甚至从一个有两个通道的工作单元安装了另一个电源???
依然没有。
任何帮助将不胜感激。



     以下为原文

  Hello, I am attempting to install a second channel in one of these analyzers and have successfully performed this mod before, twice. Now apparently there is something that needs to be done if I am dealing with a unit with serial number previous to 3641A (or something close) according to the online manuals I am supposed to contact Agilent for some reason. Symptons are...  after installing any second channel A20 board the unit will not power up. I have turned the option on internally and changed the single/dual channel jumper on the A35 board and still nothing. I have even installed another power supply from a working unit which has two channels???  Still nothing. Any help would be greatly appreciated.