Ericsson RX8000 Preventive Maintenance and Fault-Finding

Preventive Maintenance and Fault-Finding

Chapter 7

Contents

7.1	Introduction...........................................................................................	7-3
7.2	Preventive Maintenance .......................................................................	7-3
7.2.1	Routing Inspection................................................................................	7-3
7.2.1.1	Cooling Fans ........................................................................................	7-3
7.2.2	Cleaning ...............................................................................................	7-3
7.2.3	Servicing...............................................................................................	7-3
7.2.3.1	Conditions Requiring Servicing ............................................................	7-3
7.2.3.2	Replacement Parts ...............................................................................	7-4
7.2.3.3	Checks on Completion of Servicing......................................................	7-4
7.3	Maintenance and Support Services......................................................	7-4
7.3.1	Introduction...........................................................................................	7-4
7.3.2	Warranty ...............................................................................................	7-4
7.3.3	Levels of Continuing Ericsson Service Support....................................	7-5
7.4	Fault-finding..........................................................................................	7-5
7.4.1	General.................................................................................................	7-5
7.4.2	System Defaults ...................................................................................	7-5
7.4.3	Preliminary Investigations.....................................................................	7-6
7.4.4	AC Fuse Replacement .........................................................................	7-6
7.4.5	Power Supply Problems .......................................................................	7-7
7.4.6	Summary Status LED Unlit...................................................................	7-8
7.4.7	Fan(s) Not Working/Overheating..........................................................	7-8
7.4.8	Input Card Failure.................................................................................	7-9
7.5	Disposal................................................................................................	7-9
7.5.1	Moulded Plugs......................................................................................	7-9
7.5.2	Equipment ..........................................................................................	7-10
List of Figures
Figure 7.1	Fuse Carrier.........................................................................................	7-7
List of Tables
Table 7.1	Fuse Information..................................................................................	7-6
Table 7.2	Summary Status LED Unlit Fault-finding ..............................................	7-8
Table 7.3	Fans Not Working/Overheating ............................................................	7-9
Table 7.4	Input Card Fault-finding ........................................................................	7-9

EN/LZT 790 0005 R1A 7-1