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Evidence Guide: MEM18065B - Diagnose and repair digital equipment and components

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM18065B - Diagnose and repair digital equipment and components

What evidence can you provide to prove your understanding of each of the following citeria?

Locate fault

  1. System/equipment functions and principles are determined and understood by reference to equipment manuals, circuit diagrams etc.
  2. Built-in test functions are run, and fault indicators error codes and appropriate maintenance records are checked and reviewed.
  3. Fault symptoms are reproduced where appropriate and verified, using appropriate fault finding techniques.
  4. Where appropriate, faulty equipment is isolated and removed from system using correct and appropriate tools and techniques.
  5. Equipment is checked and tested using correct and appropriate test equipment and fault finding techniques.
  6. Faulty component/s are identified and/or fault cause is isolated.
System/equipment functions and principles are determined and understood by reference to equipment manuals, circuit diagrams etc.

Completed
Date:

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Built-in test functions are run, and fault indicators error codes and appropriate maintenance records are checked and reviewed.

Completed
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Fault symptoms are reproduced where appropriate and verified, using appropriate fault finding techniques.

Completed
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Where appropriate, faulty equipment is isolated and removed from system using correct and appropriate tools and techniques.

Completed
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Equipment is checked and tested using correct and appropriate test equipment and fault finding techniques.

Completed
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Faulty component/s are identified and/or fault cause is isolated.

Completed
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Repair/replace faulty components

  1. Faulty component is removed where required using correct and appropriate tools and techniques.
  2. Faulty component is repaired/replaced in accordance with manufacturers' recommended procedures or to standard operating procedures.
  3. Repaired/replacement components are fitted in accordance with manufacturers' recommended procedure or to standard operating procedures using correct and appropriate tools and techniques.
  4. Where appropriate, repaired equipment is refitted to system using correct and appropriate tools and techniques.
  5. Systems/equipment is checked and tested for correct operational compliance to specifications utilising correct and appropriate test procedures and equipment.
Faulty component is removed where required using correct and appropriate tools and techniques.

Completed
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Faulty component is repaired/replaced in accordance with manufacturers' recommended procedures or to standard operating procedures.

Completed
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Repaired/replacement components are fitted in accordance with manufacturers' recommended procedure or to standard operating procedures using correct and appropriate tools and techniques.

Completed
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Where appropriate, repaired equipment is refitted to system using correct and appropriate tools and techniques.

Completed
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Systems/equipment is checked and tested for correct operational compliance to specifications utilising correct and appropriate test procedures and equipment.

Completed
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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to diagnose and repair digital equipment and components. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with diagnosing and repairing digital equipment and components, or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

Required Skills and Knowledge

Required skills

Look for evidence that confirms skills in:

obtaining relevant circuit diagrams, manuals, schematics, specifications, maintenance records, supplier catalogues

locating, reading/recording and diagnosing built-in fault indicators

obtaining error code interpretation documents

running test functions and recording faults and/or equipment status indicated by built-in test functions/displays

checking electronic equipment/sub-assemblies, components, connections and terminations for conformance to specifications

removing and replacing/repairing faulty components from the electronic equipment

recording results tests on electronic equipment

isolating electronic sub-assembly from the power supply

adjusting/tuning and calibrating electronic equipment/sub-assemblies

returning to service and testing to specification the repaired electronic equipment/sub-assembly

reporting/recording return to service

reproducing fault symptoms in the electronic equipment and verifying faults using appropriate test equipment and fault finding techniques

refitting repaired/replaced components into the sub-assembly

Required knowledge

Look for evidence that confirms knowledge of:

analogue and digital electronics including amplifiers, oscillators, power suppliers, filters, transistors, ICs, digital timers, gate arrays, transmitters, converters

the function(s) of the electronic equipment/sub-assembly

procedures for running built-in test functions

errors indicated by built-in devices

symptoms of the fault in the electronic equipment/sub-assembly

the purpose of reproducing electronic equipment/sub-assembly fault symptoms

test equipment and techniques necessary to confirm electronic equipment/sub-assembly faults

procedures for verifying faults in electronic equipment/sub-assemblies

procedures for isolating electronic equipment/sub-assemblies

hazards associated with electronic equipment/sub-assemblies including electro-static discharge (ESD)

procedures for removing sub-assemblies from electronic equipment

tools and techniques to be used to remove/refit/repair/replace the faulty sub-assemblies/component from the electronic equipment

procedures for testing faulty sub-assemblies

operational specifications of the sub-assembly

equipment and techniques to be used to test the faulty sub-assemblies/component

probable causes of component failure

procedures for removing faulty components from electronic equipment

procedures for repairing/replacing faulty components

procedures for fitting repaired/replaced components into sub-assemblies

procedures for fitting repaired sub-assemblies into electronic equipment

procedures for testing electronic equipment/sub-assembly performance

operational specifications of the electronic equipment/sub-assembly/component

test equipment and techniques necessary to check electronic equipment/sub-assembly performance

safe work practices and procedures

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Equipment

Digital hardware, communication, consumer audio/video, electronic appliances, scanning systems, security/fire systems, power supplies and test equipment, etc.

Fault finding techniques

Signal injection, substitution, monitoring, measurement, heating/cooling, sound, visual, touch, smell and the use of inbuilt software and hardware diagnostics

Test equipment

Continuity testers, ammeters, voltmeters, cathode ray oscilloscopes, frequency counters, signal generators, digital probes etc.

Components

Discrete component assemblies or individual components such as resistors, switching devices, capacitors, transformers, solenoids, tubes, semi-conductors, transistors, ICs, digital timers, gate arrays, transmitters, converters etc.