User guide

5 Preventive Maintenance and Fault-finding
Chapter 5
Contents
5.1 Introduction...........................................................................................5-3
5.2 Routine Checks ....................................................................................5-3
5.2.1 Cooling Fans ........................................................................................5-3
5.2.2 Cleaning ...............................................................................................5-3
5.3 Servicing...............................................................................................5-3
5.3.1 Damage Requiring Service................................................................... 5-3
5.3.2 Replacement Parts ...............................................................................5-4
5.3.3 Checks on Completion of Servicing...................................................... 5-4
5.4 Maintenance and Support Services...................................................... 5-4
5.4.1 Warranty ............................................................................................... 5-4
5.4.2 Levels of Continuing Ericsson Service Support.................................... 5-5
5.5 Fault-finding..........................................................................................5-5
5.5.1 Unit Faults ............................................................................................5-5
5.5.2 Preliminary Checks - Has the MX8400 Multiplexer Failed?..................5-7
5.5.3 Monitoring and Alarm Indicators...........................................................5-8
5.5.3.1 Front Panel Indicators ..........................................................................5-8
5.5.3.2 Monitoring Indicators ............................................................................5-8
5.5.3.3 Failure of the Power Up Self Test......................................................... 5-8
5.6 Overrate Alarms ...................................................................................5-8
5.7 Missing PIDs......................................................................................... 5-8
5.8 Access to Fault-finding Information ......................................................5-9
5.9 AC Supply Problems/Indicator Unlit .....................................................5-9
5.9.1 Symptoms............................................................................................. 5-9
5.9.2 Power Indicator Unlit ..........................................................................5-10
5.9.3 PSU Redundant Operation and Hot Swap ......................................... 5-10
5.9.4 AC Equipment Fuse Replacement .....................................................5-11
List of Figures
Figure 5.1 AC Supply Inlet Fuse ..........................................................................5-11
List of Tables
Table 5.1 Reported Faults...................................................................................... 5-5
Table 5.2 Front Panel Indicators............................................................................5-8
Table 5.3 Power Indicator Unlit Fault-finding .......................................................5-10
Table 5.4 AC Supply Fuse Information ................................................................5-12
2/1553-FGC 101 1014 Uen B
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