The relevant led ON shows the selection while the led OFF shows the deactivation.

相关的灯亮表示该选择器启动，灯灭说明切断。

T9 key:

The key “la mps test” has been provided to allow a rapid check of the different la mps, which the m achine is equipped. Its function is that of 

switching on the la mps and the led associated to the “Cust o mer” keys placed on the m ain control panel. As the functionality of the la mps 

shows the special conditions of the m achine, their failure m ay confuse the operator, which is monitoring the m achine itself. 

“信号灯测试”键用于快速检查机床几个部位的信号灯的完整性。它的功能简单，只要打开所有的信号灯和主面板上“用户”键相关的灯。由于信号灯

是用来表示机床的特殊状态，其中一盏有故障会导致操作者错误判断机床的实际状态。

This key serves in fact to check the correct operation of these indicators and it has to be always used when doubting about the interpretation 

of the indicator as regards to the reality. The relevant led states the selection done.

此键用于实际检查这些灯正常运行与否，并用于怀疑灯的显示和实际状态不符时。相关的信号灯仅用于表示此键已被按下。

T10 key:

For the m achine safety they have been provided some interference zones a mong the mechanical components.