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 test, diagnose and maintain electronic controlling systems on mobile plant 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 testing, diagnosing and maintaining electronic controlling systems on mobile plant, 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 of competency. 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

Look for evidence that confirms skills in:

identifying the control unit

using fault codes correctly to access fault codes with indicators, meters or diagnostic tooling

interpreting fault codes and specifications correctly from applicable manuals

clearing fault codes from memory and verifying using applicable procedures and manuals

identifying and applying procedures to safeguard electronic components and systems when diagnosing and maintaining typical mobile plant electronic circuits

locating and identifying various types of input and output components

following manufactures' procedures to test output components

identifying, removing, replacing component parts

making adjustments in relation to mechanical clearances and measured electrical and resistance values

selecting tooling (software/hardware) according to manufactures' manual

obtaining security codes using correct protocol from manufacturer, plant/equipment identification and appropriate identification

using computer and relevant computer applications including downloading and entering data for new specifications as per manufacturers' procedures

Required knowledge

Look for evidence that confirms knowledge of:

applicable fault codes and their meanings

procedures to clear fault codes and verify clearance

sources of potential damage to typical mobile plant electronic systems when performing maintenance and diagnostic work

techniques and procedures to safeguard against damage

correct troubleshooting procedures

techniques/procedures used to remove and replace faulty components

various types of input components

operation and principles of transducers used in control systems

relevant testing procedures

component types, functions and locations

operation and principles of actuators used in control system

concepts of EPROMs and microprocessors

procedures to obtain security code

procedure to download, enter and verify data

safe work practices and procedures

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.

Faults are rectified

Adjustments and replacements which do not include the repair of components

Input components

Sensors, actuators, resistors, capacitors, diodes, transistors, ICs, EPROMs, microprocessors

Output components

Hardware, software, hard copy devices, soft storage devices

Specifications

Manufacturer and/or vendor specifications

Standard operating procedures