MAINTENANCE OF ELECTRONIC EQUIPMENT

COURSE 210: 8 DAYS

Many specialised electronic circuits used in industry do not have modern replacements available. This course provides participants with the knowledge and skills necessary to fault-find electronic circuits like these to component level. It also provides the skills and knowledge required to understand electronic circuits and make repairs and modifications to them.

PARTICIPANTS

The course is intended for those who have an electrical background and who wish to extend their work into the field of electronics.

COURSE PRESENTATION

The course provides participants with an understanding of electronic components and how they would be used in electronic circuits. Participants then develop their knowledge and their testing, measurement and fault-finding skills on a range of industrial electronic circuits with switched faults, using oscilloscopes, logic probes and other test equipment to diagnose them. Comprehensive course notes are provided.

COURSE OBJECTIVES

On completion of the course, participants will be able to

apply suitable safety precautions when working on electronic equipment (anti-static precautions, electric shock hazards etc)
identify electronic components and read their values (passive components, transistors, voltage regulators, ICs etc)
understand the operation of electronic components within circuits
read electronic circuit diagrams
use electronic test equipment to analyse circuits (oscilloscopes, logic probes etc)
apply a systematic approach to fault-finding
locate faulty electronic components and carry out effective repairs (on a range of simple to complex electronic circuit boards).

Successful completion of the course leads to the award of the Unite / Technical Training Solutions Competence Certificate 210 ‘Maintenance of Electronic Equipment’
Contact us for more information on how the electronics training course leads to competence in the maintenance of electronic systems

What do candidates on the Electronics course actually do?

We begin by analysing the full range of electronic components used in commercial and industrial equipment and get the candidates to think about how these devices would be used in various applications. We also look at the faults that these components might develop.

The following are some extracts from the course notes, showing how LEDs should be tested, how voltage regulators are commonly marked and how ICs should be inserted and extracted.

This is page 30 of the course notes for the electronics course, showing how LEDs and diodes should be tested This is page 37 of the course notes for the electronics course, showing how voltage regulators are typically marked and their common terminal layouts This is page 55 of the course notes for the electronics course, showing how ICs should be removed or inserted into IC sockets

We have a range of passive (resistors, capacitors, inductors etc) and active (transistors, diodes, LEDs, thyristors etc) demonstration components which the candidates inspect. Candidates are expected to read the values of the components and gain an understanding of how and where they would typically be used.

Candidates on the electronics training course are shown a wide range of common passive electronic components. They are shown how to read the values of these components, where and how they would typically be used and they also use test equipment to confirm the serviceability of these components

Candidates on the electronics training course make measurements using precision multimeters to confirm the serviceability of passive and active electronic components

Candidates use a precision multimeter to make measurements of the various electronic components. From this they can confirm that the components are serviceable and that their values are as expected.

We then go on to look at op-amps, voltage comparators and other ICs. The various ways in which these are used is analysed. We also look at how oscilloscopes should be used. The following are some pages from this part of the course notes, showing how op-amps can be connected, how oscilloscopes should be set up and an explanation of some of the more common digital logic ICs like shift registers and decoders.

This is page 60 of the course notes for the electronics course, showing the various configurations of op-amps This is page 68 of the course notes for the electronics course, showing how oscilloscopes should be triggered properly This is page 83 of the course notes for the electronics course, showing typical digital logic ICs like shift registers and decoders

We ensure that the candidates are able to use oscilloscopes properly, so that they can capture repetitive and single-shot signals correctly and make measurements of them.

Candidates on the electronics training course learn how to use oscilloscopes properly. This is one of our analogue scopes.

We use a range of circuit boards to explore the application of various components and candidates can thereby reinforce their knowledge of reading component values and how the components are used as well as gaining more experience of using the osilloscopes to see what is actually happening in the circuits. Some of these boards have switched faults on them so that the candidates start to gain some fault-finding experience.

Candidates on the electronics training course use a range of circuit boards to explore the function of the various electronic components. Some of these also have switched faults.

We then introduce some more complex circuit boards (used for many years in the City & Guilds 224 Electronics Servicing Course). The circuits for these are quite complex and candidates are expected to understand them fully, helping to strengthen their understanding of electronic circuitry. A range of faulty boards (10 of each board) provide candidates with the opportunity for more practice of their fault-finding skills. Two of these boards are shown here.

Candidates on the electronics training course explore the workings of complex circuits incorporating IC timers, logic gates etc. We also have 10 more of these boards which have faults on and candidates can practice their fault-finding skills on these.

The course also provides candidates with a range of useful reference material, for example the resistor colour code and preferred values in the E6 to E96 sets, the pinout for the industry-standard CMOS 4000 series ICs and the 7400 series TTL Logic ICs.

This is page 111 of the course notes for the electronics course, showing the resistor colour codes and preferred values in the E6 to E96 sets This is page 115 of the course notes for the electronics course, showing pin-outs for the industry standard CMOS logic IC series This is page 131 of the course notes for the electronics course, showing pin-outs for the industry standard TTL logic IC series

A variant on this course is used for training the entrants to the WorldSkills UK Electronics competition. The team selected from the winners of this goes on to compete in the World Skills Olympics Competition, held throughout the world every four years in locations like Canada, Japan, and Korea. The competition will be held in London in 2011.

If you would like to see some of the equipment used on the electronics course for yourself, then please call us to arrange a visit to our offices in Kent. Alternatively, we can visit you anywhere in the British Isles.