Hi, I am sure all of my blog readers understand that in the field of mobile phone repairing multimeter is a very important tool without a multimeter you will not be able to measure anything in the field of cell phone repairing. most students question how to use multimeter in mobile phone repairing. so come let us try and understand how we can use the digital multimeter to measure AC current and DC voltage and how we can check basic electronic components
 |
| best how to use multimeter pdf with mobile repairing examples |
If you have a cell phone multimeter already that's good or not visit this link to Review the Best Top digital multimeter, smartphone multimeter, htc multimeter for Comparison prices and buy Cheap and affordable ones for you. it is difficult to answer which is the best multimeter for mobile repair.
Click here to learn Multimeter History, General properties, and Operation on Wikipedia
The device you can see in the picture is a digital multimeter. the reason why we call this a digital multimeter is that it measures and gives you the results in the form of digits as you can see in the picture
Click here to learn Multimeter History, General properties, and Operation on Wikipedia
Digital Multimeter Function
 |
| Digital multimeter picture |
The digits are very clearly displayed on the picture and that is one of the reasons why this is called a digital multimeter because digits will help you understand the results of whatever you are checking very easily
 |
| Digits clearly displayed help you understand the results |
 |
| Probes place diagram |
Now, first of all, you need to understand what probes are as you can see there are two probes that are commonly used with analog and digital multimeters the first one is a black colored one the second one is a red colored one
 |
| Red black probes |
These two probes have very specific positions where you need to place them on the cell phone multimeter the first one is a black probe the black probe has to be placed at a point where it is written as Com which basically signifies a common range so the black probe has to be placed only in the common range
 |
| Measure electronic components |
Place it there and press it and it will fit in tightly there right above that you will see a symbol where it is written as voltage-ampere M a this is where you take readings of voltage-ampere etc and you place the red probe Here press it tightly so it can fit in right above that is another point where you can check higher values of electricity with the meter however commonly in a htc multimeter and multimeter using android smartphone we normally use the red and black probes and that is more than enough to measure a lot of the electronic components. how to check electronic components with multimeter pdf helps you to test & check basic electronic components on mobile phone PCB. Right now let us try and understand what are these other readings that are displayed on the cell phone multimeter using an Android smartphone.
To know mobile battery check with a multimeter and What is Digital Multimeter watch the Digital Multimeter video below
Before you know the use of a multimeter in mobile repairing watch this video from 01:13 you learn the basics first.
When you're investing in the study of Mobile Hardware Repairing Training, you should want to know as much as you can about the hardware inside mobile phones read the article mobile phone hardware and software engineering best mobile hardware beginner guide
How to use digital multimeter pdf
 |
| How to use meter to read phone |
 |
| Year2023 updated pdf guide |
No worries. Click Here so we can send you a how to check mobile components with digital multimeter PDF and a copy of the mobile components testing and checking pdf so you can read it when it’s convenient for you. if you know use digital multimeter mobile repairing then it's easy for you to use analog multimeter. it doesn't matter whether you are using a digital or analog multimeter the mobile repairing online blog is here to help you.
How to use analog multimeter in mobile repairing Click here to read and download the mobile repairing meter guide to getting updated in the year 2024
You can use an analog or digital mobile multimeter as a multimeter for phone repair. for multimeter mobile checking both are good.
This digital multimeter repair manual Shows you what inside the multimeter case and how to repair it.
Congratulations on reading this blog's first paragraphs. Now it's time for me to tell you bonus tips to do before doing mobile repair work with a multimeter.
Seating with Experienced Repair Technicians
 |
| Mobile repair course training |
Repair technicians provide repair and maintenance services for mobile cell phones, smartphones, iPhones, tablets, or other mobile devices. Depending on the nature of the device needing repair they use different repairing tools. they also read repairing books for finding the solution fast. By expanding some time with a repair technician as a helping hand you can learn lots of things, especially the use of the best repair tool during your mobile repair course training.
Reading the 6 port charging amp tester best readings from article, technicians can efficiently diagnose and fix issues. So, if you're doing mobile repairing, make sure to familiarize yourself with the role and functions of a 6 port USB charging station.
Get everything you need to fix the most basic to most advanced phone problems! read best cell phone repair tools and know the tools needed to repair cell phones
Direct Current and Alternating Current Voltage Checking
Now we move on to how to use a multimeter to test voltage. now on the left-hand side top, you will see something written as V followed by a dash and a few dots there now this is the symbol for DC so on the left-hand side basically when you turn the Range Switch to the left you will be able to check the DC voltage somewhere ranges in the where |
| Check DC voltage here |
The range is between 20 volts and two thousand words so you can check DC voltage by placing the Range Switch at the respective voltage point if you have a smaller voltage to be checked like a cell phone battery you can place it at 20 volts
Click here to know digital multimeter (DMM) SparkFun VC830L useful methods! you can use these tips on most the multimeters
Now try to understand students' common questions about how to use multimeter for mobile repairing
Now let's try to understand how we can check DC we are going to be using a battery booster to test this so we switched on the 12 volts DC adopter with Ampare
 |
| for repair cell phone battery |
This is a device that is used to boost cell phone batteries and we are going to connect the output wire of this to the probes and we are going
 |
| boost mobile phone battery |
To be testing the voltage of the output now we connect the two output wires of the booster to the two probes of the multimeter and make sure that you connect it to the right.
Read The Best Kept Secrets about phone battery repair and battery eliminator here
how to test cell phone battery with multimeter
how to test cell phone battery with multimeter
 |
| three-point eight volts |
And so the black and the black-red in the red and you can see this is around three point eight (3.8)volts so this is the DC voltage that we have measured and you can measure DC voltage by placing it at the Range Switch at the right position on the DC voltage set so whenever this is typically how you do your measurements of AC and DC voltage
 |
| meter digital |
Whenever you are done with using the multimeter please switch it off because typically all these multimeters have a battery inside them so the battery is what gives the power to the multimeter to display the digits on the reading scale so if you Beep it switched on the battery can drain off very easily and you may not be able to use it when you need it on the right-hand side, you see something like a V followed by an ampersand sign now this is where on the right-hand side, you check the AC voltage requires 200 volts or less requires the Range Switch to be placed at the 200 volts points higher value equipment can be measured using the 750-volt point so these are the two most important ways of measuring AC and DC voltage using a multimeter the range is between 200 volts to 750 volts
 |
| range switch of ac |
Use Our Definitive Best multimeter Review try before you buy what is a multimeter used for Video specifications 2 Best Multimeters of 2022 Top Picks for Cell Phone Repairing mobile components testing checking pdf
AC Current Measuring
Now let's try checking at home typically the voltage that we have is between 120 and 230 volts we will turn the range switch now and place it at the 750-volt AC point and we will connect this to the main power plug to check the voltage now in many of the houses is between 220 volts voltage is usually available at the circuit boards electricity at your house and whenever you want to check whether you are getting the right voltage or not you use the multimeter place it place the Range Switch at the 750-volt position and we try and place the two probes in two points on the plug point you can see
 |
| Measure AC voltage with a multimeter |
The wires are being plugged into two points on your plug point and this is exactly where you get 120 to 230 volts once the probes are placed there as you can see we can see the reading here it shows 120 now going further down you will see a few more micro readings on the right-hand side which is for smaller readings that can be measured using the multimeter, however, let us focus on those readings that are very important that we commonly use using a multimeter so let us go ahead and try and understand a few more checking cell phone components checking cell phone basic electronic components at multimeter ohms now right below the DC voltage you will see a few ohm reading is given there
 |
| understanding ohm readings |
This is where you place the Range Switch to check the value of resistance when you check a cell phone's basic electronic components (resistance) which ranges from 200 ohms to 2000 kilo ohms and that is how you turn the Range Switch there you can place it at the respective point and check the resistance value
Before doing deeper testing on the mobile motherboard with the digital meter you can learn the identification of mobile phone components through our blog post Cell Phone Circuit Board Components Tutorial
What is SMD polar capacitor and How to check a Non-Polar Capacitor with a digital multimeter click here to read how to check mobile components with a digital multimeter?
 |
| how to measure amps |
Learn how to measure amps and DC volts on best dc power supply for mobile repairing
How Do You Check Continuity Beep on Cell Phone PCB
 |
| test continuity |
The next one that we will understand is where the continuity or beep testing comes now this is a very essential component when you do when it is an essential test when you are doing tracing or testing of cell phone PCBs or laptop motherboards for that matter this reading or this point is called the buzzer or continuity testing
 |
| multimeter red and black probes |
When you place it here and put the probes together you will hear a beep sound now the beep sound is very distinct here but let us try and understand what is the reason behind this beep sound
Q: Why do we use this continuity test now the reason why we do this beep testing?
A: when we are checking a wire and we want to check whether the wire is broken in between typically broken wires are called open wires so if you want to check whether the wire is broken from inside now you will not be able to find it out looking at it from the outside so to check the continuity we use the beep or continuity testing
This means you touch the two ends of the probe using the two ends of the wire using black and red probes if you hear a beep sound it means that the circuit is not open and the wire is proper but if you don't hear a beep that means that the circuit is broken somewhere and you need to fix it
this is also used while doing tracing on a cell phone printed circuit board to check whether two points are connected properly
How to check PCB with multimeter pdf
How to check PCB with multimeter pdf
 |
| testing power supply in prints |
Now let us learn How You Test and Trace Prints on a Cell Phone PCB. we will try and understand how we can test or trace Prints on a cell phone PCB circuit system testing or tracing in a PCB essentially is to find out whether the power supply is properly reaching different parts or components of a cell phone and as you all know we will be using the digital multimeter to try and test this whole process so once we switch on the multimeter we place it in the beep or continuity testing position and we will touch the probes to check it up if we here the beep which means the continuity testing position is working perfectly and the probes are in proper condition using these probes we will be able to test the circuitry in a cell phone PCB
To test the phone line with a multimeter watch the digital multimeter how to use the video below
The Ground Line in Cell Phone PCB (GND)
So, first of all, we will check the negative line in a cell phone PCB as you all know power comes with a positive and a negative line, a negative line is what is also called a ground line or the baseline and this is signified by the yellow stripe that you see all across the phone PCB
 |
| GND in mobile circuit |
So this entire yellow strip that you see in the picture right now brightly colored strip is what signifies the negative line on the cell phone
But continues learning more about mobile battery connectors the continuity mode on a digital meter and how to check the Ground Line on a Mobile Phone PCB using beep testing to read mobile jumper solution
How to Measure Ground Resistance with a Digital Multimeter
 |
| Testing ground resistance with multimeter |
To test this negative line, you can place the tips of the probes in the multiple points across this entire circuit and check whether the continuity is intact or not so let's try and first check the probes and try and start off with the tracing of the negative line in all Phone PCB so every board typically will have a very prominent line like this the negative line or the grounding line as we call it to test if you place the probe on any 2 on the grounding line and you can hear the beep so when we do this testing you'll be able to check whether the circuit is broken at any point in time if it's a closed circuit which means it's perfectly all right all the points are connected very well and the negative line is intact if it's an open circuit you will not hear a beep sound when you place the probe at the respective point.
How do check the mobile resistors using a digital multimeter? now you don't have to wait we publish the next blog post for you on testing all electronic components with a digital multimeter it covers the following topics:
- mobile testing tutorial pdf
- testing electronic components with multimeter pdf
- how to check electronic components with a digital multimeter
- how to test electronic components with digital multimeter pdf
- identification of mobile phone electronic components
Are you searching mobile phone multimeter, mobile repairing multimeter, how to check short circuit using multimeter, and how to find a short circuit with a multimeter you must watch this shorting in mobile phone solution video
So as you can see in this deep article on Top Multifunctional Digital Multimeter we tried to understand what a digital multimeter is how the probes work where the probes need to be placed how we can measure AC current and DC voltage, live wire testing and continuity testing check Ground accurately on cell phone circuit board going forward we will collect a lot more information about how we use this tool in different streams including iPhone repairing electronics thank you very much for reading
Post a Comment
Post a Comment
please dont add any spam comment