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7 Preventive Maintenance and Fault-finding
Chapter 7
Contents
7.1 Introduction...........................................................................................7-3
7.2 Routine Checks ....................................................................................7-3
7.2.1 Cooling Fans ........................................................................................7-3
7.2.2 Cleaning ...............................................................................................7-3
7.3 Servicing...............................................................................................7-4
7.3.1 Conditions Requiring Servicing ............................................................7-4
7.3.2 Replacement Parts ...............................................................................7-4
7.3.3 Checks on Completion of Servicing...................................................... 7-4
7.4 Maintenance and Support Services...................................................... 7-5
7.4.1 Introduction...........................................................................................7-5
7.4.2 Warranty ...............................................................................................7-5
7.4.3 Levels of Continuing Ericsson Service Support.................................... 7-5
7.4.4 Warranty ...............................................................................................7-5
7.4.4.1 Levels of Continuing Ericsson Service Support.................................... 7-5
7.5 Fault-finding..........................................................................................7-6
7.5.1 General.................................................................................................7-6
7.5.2 System Defaults ...................................................................................7-6
7.5.3 Preliminary Investigations..................................................................... 7-6
7.5.4 Ethernet Remote Control...................................................................... 7-6
7.6 AC User Accessible Fuse Replacement...............................................7-7
7.7 Disposal................................................................................................7-8
7.7.1 Molded Plugs........................................................................................7-8
7.7.2 Equipment ............................................................................................7-8
List of Figures
Figure 7.1
Cooling Fans Location..........................................................................7-3
Figure 7.2 Fuse Carrier.......................................................................................... 7-8
List of Tables
Table 7.1
Fuse Information................................................................................... 7-7
EN/LZT 790 0003/2 R1A
7-1