The filament heater circuit,rotating anode startup and running circui and X-ray produce circuit are mainly changed,and some circuits in power and filament heat are added.

• 主要将灯丝加热电路、旋转阳极启动运转电路、X线发生控制电路进行较大完善改造,并增加了部分电源电路及灯丝加热电路。