Application
This unit of competency requires application of hand skills and knowledge of component repair and overhaul procedures relating to aircraft analogue and digital passenger entertainment electronic equipment components that are repaired or overhauled in aviation maintenance workshops during scheduled or unscheduled maintenance. Work may be performed individually or as part of a team.
The unit is part of the Avionic Certificate IV (Component Workshop Maintenance Stream) training pathway.
The unit is used in workplaces that operate under the airworthiness regulatory systems of the Australian Defence Force (ADF) and the Civil Aviation safety Authority (CASA).
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. | ||
1. | Determine requirements | 1.1 | Audio and video system and reproducer component defect reports (removal tags) or customer order are correctly interpreted and matched by part and serial numbers |
1.2 | Circuitry is correctly prepared and connected to the applicable test equipment and is functionally tested or cycled through the prescribed test procedures in accordance with the maintenance documentation for evidence of serviceability or malfunction | ||
1.3 | Modification status is clearly established to assist in determining the overhaul requirements for the components | ||
1.4 | Extent of overhaul or repair is correctly identified and documented | ||
2. | Dismantle and inspect audio and video system and reproducer components | 2.1 | Component parts are dismantled in accordance with maintenance manuals while observing all relevant work health and safety (WHS) requirements |
2.2 | Component parts are assessed for serviceability in accordance with the relevant maintenance documentation | ||
2.3 | Parts requiring specialist repair are tagged and repair instructions are accurately specified | ||
2.4 | Parts lists are compiled and processed in accordance with standard enterprise procedures | ||
3. | Repair and/or modify audio and video system and reproducer | 3.1 | Component parts are repaired or replaced in accordance with the relevant maintenance documentation |
3.2 | Modification of components or parts is undertaken, where required, by relevant manufacturers’ bulletins or procedures | ||
4. | Assemble, test and adjust audio and video system and reproducer components | 4.1 | Assembly of component parts is carried out in accordance with specified tolerances and the applicable maintenance documents |
4.2 | Assembled components are tested and adjusted in accordance with the applicable maintenance documentation using the appropriate test equipment | ||
4.3 | Required maintenance documentation and modification records are completed and processed in accordance with standard enterprise procedures | ||
Evidence of Performance
Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria under the specified conditions of assessment, and must include:
applying relevant WHS practices
using approved repair/overhaul procedures and processes relating to analogue and digital circuitry
recognising the serviceability state and repair or overhaul requirements for digital electronic interface systems:
VCRs
video display systems
CRT display systems
symbol generators
audio amplifiers
audio selectors
voice recorders
microphones
head sets
PCUs
tape reproducers (and tape reproduction)
applying logic processes, and using test equipment and appropriate wiring diagrams and manuals to isolate component faults
performing component testing to isolate/confirm component fault and assess post-repair/overhaul serviceability.
It is essential that component testing procedures, cleanliness requirements and safety precautions applicable to the components being maintained are fully observed, understood and complied with. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice across a range of inspection, testing and troubleshooting applications (including the timely involvement of supervisors or other trades) is critical.
Evidence of transferability of skills and knowledge related to repair, modification and overhaul is essential. This may be demonstrated through application across a range of components listed in the Assessment Conditions.
Evidence of Knowledge
Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:
component and system operation
the basic function and operation of audio and visual and reproducer components to enable testing for fault isolation/confirmation to determine repair or overhaul requirements, and serviceability status post-repair or overhaul
basic principles/functions relating to audio and visual and reproducer components and associated with:
advanced analogue fundamentals
basic logic and semiconductor theory
digital fundamentals
electrostatic discharge (ESD) precautions
alternating current (AC) and direct current (DC) electrical systems
video display theory
video recorder theory
cleaning and maintenance techniques for video and recorder heads
aircraft display systems
symbol generation
vector and raster graphics
audio circuit theory
sound measurement
decibel (dB) level standards
audio tape control signals and recording techniques
basic logic and semiconductor theory
cleaning and maintenance techniques for audio recorder heads.
Assessment Conditions
Competency should be assessed in the work environment, or simulated work environment, using tools and equipment specified in maintenance documentation. It is also expected that applicable general and special-purpose tools and test equipment would be used where appropriate.
The application of testing procedures should also clearly indicate knowledge of system operation before undertaking any action. Knowledge of system operation and the relationship of individual components will be necessary to supplement evidence of ability to troubleshoot component faults. The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards. Use of high precision, high reliability soldering techniques and handling of components, including application of anti-static equipment, must be demonstrated.
The following conditions of assessment represent the requirements of the Regulators (ADF and CASA) and maintenance stakeholders and must be rigorously observed.
A person cannot be assessed as competent until it can be demonstrated to the satisfaction of the workplace assessor that the relevant elements and performance criteria of the unit of competency are being achieved under routine supervision on an item from each of the following groups:
VCRs
video display systems
CRT display systems
symbol generators
audio amplifiers
audio and video selectors
voice recorders
microphones
head sets
PCUs
tape reproducers (and tape reproduction).
This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry Evidence Guide (for details refer to the Companion Volume Assessment Guidelines).
Assessors must satisfy the requirements of the National Vocational Education and Training Regulator (Australian Skills Quality Authority, or its successors).
Foundation Skills
Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.
Range Statement
This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. | ||
Audio and video systems and reproducers include: | Video cassette recorders (VCRs) Video display systems Cathode ray tube (CRT) display systems Symbol generators Audio amplifiers Audio and video selectors Voice recorders Microphones Head sets Passenger control units (PCUs) Tape reproducers (and tape reproduction) | |
Procedures and requirements include: | Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise | |
Sectors
Competency Field
Aviation maintenance