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Elements and Performance Criteria

1. Prepare to troubleshoot digital sub-systems
   • WHS/OHS processes and workplace procedures for a given work area are obtained and applied
2. WHS/OHS risk control work preparation measures and workplace procedures are followed
3. Scope of fault is obtained from documentation and/or work supervisor to determine work to be undertaken
4. Advice is sought from work supervisor to ensure the work is coordinated effectively with others
5. Sources of materials required for work are determined in accordance with workplace procedures
6. Tools, equipment and testing devices required for work are obtained and checked for correct operation and safety
7. Troubleshoot digital sub-systems
   • WHS/OHS risk control work measures and workplace procedures are followed
8. Need to test and measure live work is determined in accordance with WHS/OHS requirements and workplace procedures
9. Circuits are checked and isolated in accordance with WHS/OHS requirements and workplace procedures
10. Fault finding of digital components is conducted using measured and calculated values of parameters in accordance with workplace procedures
11. Unplanned situations are dealt with safely and with approval of relevant person/s
12. Fault-finding activities are carried out efficiently without waste of materials or damage to apparatus, the surrounding environment or services using sustainable energy practices
13. Complete work and document troubleshooting activities
    • WHS/OHS work completion risk control measures and workplace procedures are followed
14. Worksite is cleaned and made safe in accordance with workplace procedures
15. Work completion is documented and relevant person/s notified 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.
Troubleshooting a digital sub-system must include the following:	at least three digital components/circuits or functions at least three 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 two separate occasions and include:

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including: using risk control measures calculating parameters correctly and accurately carrying out fault-finding activities without waste and damage to materials, apparatus, environment or services checking and isolating circuits dealing with unplanned situations safely and with approval of relevant person/s determining sources of material required for work measuring and calculating values of parameters in fault finding obtaining and checking tools, equipment and testing devices for correct operation and safety obtaining scope of fault from documentation and/or work supervisor preparing to troubleshoot digital sub-systems seeking advice from work supervisor to ensure work is coordinated testing and measuring live circuits troubleshooting digital sub-systems using sustainable energy practices.

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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:

analogue and digital signals binary addition and subtraction combinational logic circuits, including logic gate types and characteristics, truth tables and logic gate operation digital building blocks, including clocks, multiplexers and demultiplexers, encoders and decoders, counters, flip-flops, latches and registers digital displays, including liquid-crystal display (LCD) and 7-segment digital fault-finding principles digital numbering schemes, including binary, hexadecimal, binary-coded decimal (BCD), American Standard Code for Information Interchange (ASCII) and Unicode digital sub-system building blocks electrostatic precautions when handling devices, logic families (CMOS and transistor-transistor logic (TTL)), including comparisons, input and output types, unit load and noise margin numbering systems, including conversions principles of analogue-to-digital and digital-to-analogue conversion problem-solving techniques relevant checking and isolating circuit methods relevant circuit measurements and parameter values calculations relevant digital sub-systems relevant industry standards relevant job safety assessments or risk mitigation processes relevant manufacturer specifications and operating instructions relevant materials, tools, equipment and testing devices relevant testing and measuring methods relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace instructions, policies and procedures, including handling sensitive electronic components sustainable energy principles.

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