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Elements and Performance Criteria

1. Prepare to find and repair fault
   • WHS/OHS requirements and workplace procedures for relevant work area are identified, obtained and applied
2. Risk control measures are applied in accordance with workplace procedures prior to commencing work
3. Risks/hazards are identified, assessed and reported to relevant person/s and control measures implemented
4. Extent of faults is determined from reports, other relevant documentation and discussions with relevant person/s
5. Relevant person/s is consulted to ensure the work is coordinated effectively with others
6. Tools, equipment and testing devices required to diagnose faults are obtained in accordance with workplace procedures and checked for correct operation and safety
   • Workplace risk control measures and procedures are applied
7. Need to test and measure live work is determined in accordance with WHS/OHS requirements and workplace procedures
8. Circuits/machines/plant are checked and isolated, as required, in accordance with WHS/OHS requirements and workplace procedures
9. Logical diagnostic methods are applied to diagnose telecommunication apparatus and system faults employing measurements and estimations of system operating parameters referenced to system operational requirements in accordance with workplace procedures and relevant industry standards
10. Suspected fault scenarios are tested in accordance with workplace procedures and relevant industry standards
11. Source of the fault is identified and relevant person/s engaged to rectify the fault in accordance with workplace procedures and relevant industry standards
12. Faults in electronic components are rectified to raise telecommunication apparatus and system to its operation standard
13. System is tested to verify that the system operates as intended and to specified requirements
14. Decisions for dealing with unplanned situations are made based on job specifications, work requirements and discussions with relevant person/s
15. Methods for dealing with unplanned situations are selected on the basis of safety and specified work outcomes
16. Diagnosis and rectification activities are carried out efficiently without waste of materials, damage to apparatus, the surrounding environment or services applying sustainable energy practices
17. Complete and report fault-finding and repair activities
    • WHS/OHS work completion risk control measures and workplace procedures are followed
18. Worksite is made safe in accordance with workplace procedures
19. Rectification of faults is reported in accordance with workplace procedures
20. Relevant person/s is notified that the system faults have been rectified in accordance with workplace procedures

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.
Fault finding and repairing faults in electronic telecommunication apparatus and systems must include at least the following:	two system faults

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

applying logical diagnostic methods using fault scenarios to test the source of system faults identifying faults and competency needed to rectify them rectifying faults in system electronics verifying that the system operates correctly documenting fault rectification dealing with unplanned events applying relevant risk identification, assessment, reporting and control requirements applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including the use of risk control measures applying sustainable energy principles and practices coordinating work with relevant person/s determining live testing/measurement requirements determining scope of work identifying and accessing materials, tools, apparatus and testing devices isolating circuits/machines/systems.

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Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

telecommunication apparatus and system fault finding and repair, safe working practices and relevant standards, codes and regulations, including: telephone system fundamentals: the transmission of sound in a telephone system encompassing: function of telephone transmitters and receivers components and functions of the telephone purpose of earthing and protection in a telephone system customer switching systems encompassing: basic function difference between a key system and a private automatic branch exchange (PABX) advanced features basic operations of system distribution frames (SDF)/test point frames (TPF), power fail and line interface requirements (e.g. indial, rotary groups, ISDN, extension and tie-line circuits) types, purpose, use, and requirements of metering devices metering and installation arrangements of public/pay phones installation methods and requirements encompassing: customer switching systems (CSS) interfacing equipment termination of CSS equipment requirements for programming of CSS hazard associated the electronic components of CSS encompassing: static discharge chemical damage mechanical damage electromagnetic Interference telephone network facilities: network subsystems (i.e. functional blocks) components and operating parameters switches within the network customer accesses infrastructure system security telecommunication earthing and protection: telecommunication overvoltage protection system: operating principles overvoltage and surge/spike suppression protection techniques overvoltage protection devices installation of overvoltage protection systems earthing protection system encompassing: components and arrangement of the multiple earth network (MEN) system TELEX functional earth system telecommunication system earthing single and multi-storey communication earth system protective earth barriers for segregation, cable tray, duct and metal equipment enclosures electrical interference encompassing: types – radio frequency interference (RFI) and electro-magnetic interference (EMI) sources of interference techniques in reducing interference earthing cable shields earth testing instruments and procedures safety issues to be considered with earthing and bonding PABX fundamentals: programming methods configuration options programming options switches, hubs and routers: purpose and function circuit configurations connection arrangements system protocols decoders: purpose and function circuit configurations connection arrangements system protocols fault finding and repair: typical faults, their symptoms and cause fault diagnosis procedures and testing component replacement system adjustments relevant manufacturer specifications relevant safe work method statements (SWMS)/job safety assessments or risk mitigation processes relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace policies and procedures.

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