Text preview for : How to Test Mobile phone Speaker.pdf part of REPAIR Check How to check mobile compentent with multimeter
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How to Test Mobile phone Speaker,Buzzer or Ringer
Speakers also known as earpiece is the device that allows the handset user to hear the other user during call convesations. While the Buzzer or a Ringer is the one that sends out the ringtone to be heared by the handset user. Both Earpiece, buzzer or ringer are same speaker. it only varies the loudness of it sounds being produce. Ringer buzzer generates more loudness than the earpiece speaker. A speaker is a device that converts electrical signal into sounds. It is made by a magnetic wire winded into a coil and a metal piece of magnet. below is an example oh how to test of a good and working speakers .
Simply set the analog or digital multi-tester to X1 resistance value, and attach one probe to one the speakers terminal while tick tacking the other one unto it. A working speaker produce a crackling sounds and the multi-tester pointer moves, while the a busted one will not and have no reading.
How to Test Mobile phone Microphone or Mouthpiece
Mobile phone microphone also known as mouthpiece is the one that intercepts the voice to transmit to other mobile phone users. Without it or a defective one will result that the other user on a phone cannot hear the one with a defective microphone on its mobile phone handsets. A technical term of a microphone is a device used to convert sounds into electrical signal. A microphone is made of an electrical magnetic wire shaped into a round coil with a magnet metal surrounds it, the mechanical vibration generated by it will then produce an electrical voltage signal.
Checking the microphone is also been so easy, Just set the analog or digital multi-tester to x1 resistance value then attach both test probe to its terminal. A good sign of a working microphone tends to have a reading while the busted one will have no reading. In some other cases types of microphones may only have a reading to the range of x10 for some high resistance value.
Power ON OFF Switch on Mobile Phone - Test and Check Up Procedures
ON/OFF Switch on cell phones comes different varieties and forms or designs but the fundamentals on how does it work or where to use it is the same. On Off switch can be determine by the number of its legs or terminals. This cell phone repair tutorial for beginners covers on how to check the power on off switch on mobile phones and also work on volume key switches. Here's a brief information on every ON and OFF switch which covers how the components being assembled and by this information you can easily test and check up the said switch if it is good or in working condition. By checking on off switch is been so simply by just only checking its terminals conducting continuity. A broken power on off switch can be easily determine when its visual assembly is busted out, so this procedure below covers only when the said switch visual assembly seems to be good. This also the first step to repair the mobile phone if unable to power up, its like happens when the phone can accept and show charging if at charging state but unable to power up while pressing the power ON OFF button switch. The two Legs On OFF switch assembly:
This check up procedure can work even if the ON OFF switch is mounted on the printed circuit board or isolated. Two check this two legged kind of ON OFF switch is by simply set the multimeter to X1, then connect the two test probes of the multimeter to both legs of the switch, we are just simply trying to check here if the on off switch continuity. Then hold it so that it won't move then simply press it gently. You can easily determine it here when the said switch is working or not by the multimeter response, If the pointer moves approximately 0ohms the switch is good and working, but while if it is not moving at all it means the switch is faulty. The four legs ON OFF switch assembly:
This check up procedure can work even if the ON OFF switch is mounted on the printed circuit board or isolated. Four legged On off switch has its both opposite two terminal connected which other, so by checking this said switch is similar to the two legged on off switch. Again. just set the multimeter to X1 and connect the both probes to both opposite terminal of the said switch then simply hold and gently press it to get readings. If the the multimeter's pointer moves it means it is working while if not the switch is faulty. Read here for understanding how ON OFF switch works for advance power ON OFF switch problem repair troubleshooting techniques.