Electronic Schematics Diagram-The Four Commonly Asked Questions

I came across quite a number of questions about electronic circuit schematics diagram.

Most of the question asked are:

a) Do we really need a schematic diagram in order to repair any electronic equipment?

b) Will schematic diagram help us to repair faster?

c) At where we can get a particular schematic diagram?

d) How to read schematic diagram?

Well, the answers is as below:

a)-Theoretically yes, practically not necessary, it all depends on how good you are in electronic repair knowledge. For a beginner it is a 'must' for you to understand about schematic diagram, as you gradually gained more knowledge you will automatically depends less on schematic diagram. You will definitely need a schematic diagram when you come across a new designed or technology. For example, when comes to crt monitor repair i seldom see schematic because i already understood most of the circuitry and section in a crt monitor. The new technology such as lcd or tft monitor makes me have to temporarily relies on schematic diagram. As my knowledge of lcd monitor repair grows, i will gradually depends less on the schematics. May be my situation is different from yours because i'm concentrating only on one type of equipment. I've seen quite a lot of repairers in my country that repair many types of equipment such as tv, video, vcd, dvd, amplifier, hi-fi, fax, laser printer, microwave and so forth. Most probably they need schematic diagram to keep them up to date on each of the equipment technology.

b) If you have a particular schematic diagram for that particular equipment, your troubleshooting time can be reduced to half! Unfortunenately many manufacturer do not release their equipment's schematic diagram. If you depends on too much of schematic you will be stuck on how to repair that particular equipment. Why with schematic diagram you can repair any equipment faster? Because a schematic diagram shown you all the part list, waveform, voltages, explanation how that particular equipment work, block diagram, schematic design, component's part number, electrical schematics symbols, substitution, modification (if have) and electronic schematic symbols and etc. Assuming you have a power supply section blown and you could not recognize the component part number, but with schematic you will be able to find the exact part number and finally repaired the equipment.

c) If you work in the equipment's factory or their distributor you will have the schematic diagram for the model that they sell. Any under warranty unit that comes in you will be able to diagnose and repair the equipment fast. This will increase the company's reputation and customers will recommend to their friends about the quick service of that particular brand of equipment. You also can get schematic diagram in the form of a book from local electronic shops. This is usually a compilation of few brands and model of a specific electronic equipment. Tv or television schematics diagram are easily to get but computer monitor schematics and radio amplifier schematics is a little bit harder to find. If you have the budget get one of the book. Third, as most of us already know that you can download free electronic schematics diagram from the internet. Free tv schematics is easily found on the internet. You may also buy it the 'CD' format. This investment will usually pay back in the shortest time.

d) As how to read schematic diagram, i'm unable to show you thru article because you do need a real schematic diagram in order to make you understand. Reading schematic is not that difficult, provided you have some basic electronic knowledge. I have a few suggestions:

-Ask from a friend who is in the repair line

-Take short courses on electronic repair and ask the lecturer

-Buy books from your local bookstore about the subject "how to read schematic diagram"

-Buy schematic diagram and learn on your own (this will take sometimes but worth it)

-Fix some project kit using the electronic kit schematics given. This will add to your knowledge also.

Conclusion-In order to become a successful electronic repairer you must understand how to read schematic diagram.

Jestine Yong is a electronic repairer and a writer. For more electronic repair information please visit his website at http://www.noahtec.com/electronic-repai r-articles.htm

---

Do You Feel Used by Computers?

Do You Feel Used by Computers?A look at second-user computer equipment.Let's dispense with the myths first. I'm NOT talking about the sort of second-hand computers you get... Read More

What Is A Fuse? And How To Test It.

A fuse is a very thin wire, which either melts or vaporizes when too much current flows through it. The thin wire may be made of aluminum,... Read More

A Review of Samsung Laser Toners

Samsung laser toner is just as popular as its Hewlett-Packard and Brother counterparts. Samsung is a group of products and services that began in Korea in 1938.... Read More

Upgrading, Adding or Removing a Video Card, Sound Card, or Other AGP/PCI Card

For Video cards - Most PC video cards these days are AGP. But you COULD be working with PCI, or PCI express. If you're not sure which... Read More

Learn About The Three Basic Types Of Computer Mouse

1) Mechanical: This is a type of computer mouse that has a rubber or metal ball on its underside and it can roll in every direction. Sensors... Read More

5 Ways To Backup Your Data...

The data on your hard drive is the most critical item inside your computer, and the only item which can not be replaced. It may be an... Read More

Facing DVD Software Dilemma? Its Brainlessly Simple

1. Pocket DVD Wizard http://www.deprice.com/pocketdvdwizard.htmThe Pocket DVD Wizard allows you to make backup copies of your personal DVDs, Mpeg, Avi and DivX® video and then play them... Read More

Correctional Institution Preventive Maintenance Software

There is a great need for preventive maintenance in correctional institutions. The public would be at risk if penal facilities waited to solve problems until after they... Read More

Digital Camera Prints - Getting the Most for Your Money

Digital cameras have really taken off in popularity in recent years. It's not uncommon anymore to see several people at an event with a digital camera. Here... Read More

Getting A Great Refurbished Laptop

Are you sick of all the high priced notebooks out there? Does getting a used laptop seem like a better choice to you? Refurbished laptops are everywhere... Read More

How to Check Your IP

So you need to check your IP address, for whatever reason. Maybe you're playing an online game with a friend, or you need to access your PC... Read More

How to Read Zener Diode Code

Many technicians are confused on how to really read a zener diode code. There are many types of code number indicated on it's body. The look and... Read More

Testing a Transformer- How To Accurately Test A Transformer

There is two types of transformers in the market- linear transformer and switch mode power transformer. The transformers design is different. Sometimes it is just referred as... Read More

Ink Cartridges & Printing - Poor Print Quality Solutions

Why are there faint areas or gaps in my print out?* Unlikely, but your paper may need changing due to its deterioration due to its age.* Check... Read More

Testing Diode -The Accurate Way on How to Test Semiconductor Diode Using Multimeter

Testing diodes is different from testing a resistor because you need a skill to do it. If you do not know or wrongly test a diode you... Read More

Buying Cheap Refurbished Laptops

When comparing refurbished laptop models, ask about these specifications:Central Processing Unit: The CPU or processor is the heart of the computer. The more software you want in... Read More

Expansion Cards Part 1: (of a 3 part series)

PCIThe expansion slots available on motherboards allow for a variety of upgrades in a computer system, but matching the appropriate card to an available slot needs to... Read More

Build Your First Computer from Hardware Scratches

Wow- if you do it first time and have some asset of time in your disposition ? then go ahead and purchase motherboard, your favorite processor, memory,... Read More

The Making of Energy Efficient Datacenters

The Crooked E: The Unshredded Truth About Enron is a wonderful movie to watch. It is based on the book, The anatomy of greed, written by a... Read More

USB Hubs and Ports Explained

The USB standard has become the universal means of connection peripheral devices and equipment to the computer. Computers have either two or four USB port connectors. Each... Read More

Heliodisplay --Computer Video With No Screen

Science-Fiction meets reality with this new video display technology.The Heliodisplay includes patented and patent pending technology to transform normal ambient air and display video images into free-space.... Read More

Expansion Cards Part 3: PCI Express

In the first two installments of this series of Tech Tips, we took a look at PCI and AGP, undoubtedly the most common expansion slots in a... Read More

Used Laptop Computer: Your Quick Purchase Inspection Guide ? Part 3

Used laptop computers are everywhere these days. How can you sift through the mass of available used laptop computers to narrow your search down to the right... Read More

Wireless Notebooks: What You Need To Know About Going Wireless!

It's not exactly breaking news that our world is becoming increasingly wireless. Many of our daily activities that once needed a wired connection can now be done... Read More

Cisco CCNA Certification: An Illustrated Guide To Ethernet CSMA/CD

When you're studying for your CCNA exams, you're going to study the theory of technologies we basically take for granted in networking. CSMA/CD is one of those... Read More

Intel Celeron vs Pentium

The Celeron and Pentium Processors are two of Intel's best selling CPUs. They are found in a majority of home computer systems. When comparing the two processors... Read More