
General information seca 
14.11.12/RLEU/ARI/MRE 5/40 30-34-00-812c 
1 General Information 
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|684|685|703|704|264|274|284|285|954|957|959|963] 
These service instructions are intended for specialist staff responsible for 
maintenance and repair of the devices. These persons must be familiar with all 
the relevant electro-technical regulations and must adhere to them any time. 
These instructions are not suitable for users without specialist knowledge. 
These instructions describe how to service the devices 
[374|376|378|634|635|644|645|656|657|664|665|674|675|676|677|684|685|703|
704|264|274|284|285|954|957|959|963]equipped with NEC2 electronic modules. 
The device types for which these instructions apply are listed in the section 
headings. There are some identical models with NEC1 electronic modules. 
These instructions are not valid for those types. 
What is the structure of this document and how should you read it? Section 1 
provides a short overview of the most important points for service. We 
recommend you should read it completely. Section 2 deals with the 
maintenance of the devices, i.e. work that may have to be carried out more 
frequently. This section can be read as and when required. Troubleshooting is 
covered in section 4, where you find detailed descriptions of various 
measurements intended to identify specific errors. Starting point for 
troubleshooting is section 3, which includes an overview of error descriptions 
and the inspection steps required to identify them. 
1.1 Type Plates 
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704|264|274|284|285|954|957|959|963] 
To enable you to identify the device, information about the model and serial 
number is found on the underside or on the frame of the device (see Note down 
this information so that you have it on hand in case you need to contact us for 
queries or spare parts orders. 
 
 
 
 
 
 
 
Figgure 1: Typeplate (left approved, right non approved)