Tip 1: How to assemble a phone
Tip 1: How to assemble a phone
Build any Phone is carried out in the reverse order of its procedureanalysis. Before you disassemble your mobile device, read the terms and conditions stated in the warranty card, and read the technical documentation for your model.
You will need
- - a small Phillips screwdriver;
- - A thin flat screwdriver or a sharp knife.
Instructions
1
Prepare the work surface in such a way,so you can conveniently disassemble the phone without losing its small parts, and also not to damage internal devices. Pick up a screwdriver sized to fit your Phone, because if it is more bolt connectors your Phone, you can damage the fasteners, after which you will have to change them.
2
If you have a camera with a recording functionvideo, record the disassembly process so that you do not forget the sequence in the future. If you do not have such an opportunity, simply step-by-step write down the process on paper and draw the diagrams of connecting devices, if necessary.
3
Turn off the phone, open the battery cover and remove the battery. Remove the SIM card and removable storage. Unscrew from the back wall Phone all available screws, please note that insome models they can be hidden under special service stickers. After that gently pry the part of the body of your mobile device with a flat screwdriver or a light knife, and the best use is a plastic card.
4
If necessary, carefully detach the camera from the back of the case. After you remove the case Phone, carefully study its contents. Unscrew the microcircuit, disconnect the keyboard Phone, do not forget also about the side buttons for locking the device and adjusting the sound level. Remove the keys of the keyboard by pushing them from the outside.
5
Build your mobile device in thereverse sequence, paying attention to the correspondence of the screw sizes to the housing threads. Be sure to attach the bolts to the internal devices Phoneto prevent them from breaking the next time you drop your device. Insert the SIM card, replace the removable drive and the battery. Close the cover Phone and check its operation.
Tip 2: How to make a micro earpiece
Headphones have found wide practical application among students during passing exams and tests. However, it happens that it is expensive to purchase this device. In this case, it can be collected independently.
You will need
- - soldering iron;
- - micro-carton scheme;
- - battery;
- - details of the circuit.
Instructions
1
Get all the necessary parts formicrophone. They can be found in stores or purchased online. The main thing - remember that the smaller the elements of the device, the more inconspicuous it will be. You will need transistors of honeycomb type23 BC847C, KT3130B9, VS847B, capacitors of nominal value 0.1 μF, CHIP resistors with a rating of 10 kΩ, 43 kOhm, 560 kOhm. The source of the sound will be an electromagnetic miniature phone, for example, TEM-1956.
2
Find the network of the microphone in the Internet. Study it carefully, and check that you have the required items. Take the board of the desired size and weld all the elements according to the general rules of the SMD elements. After you have finished the soldering process, wipe the board from the flux and check with the multimeter that the execution is correct and there is no shortage between the elements.
3
Carry out a receiving coil of enameledwire PEV-2 and wind around the chip about 70-100 turns. Solder the ends of the wire to the board in accordance with the recommendations of the electrical circuit of the microphone.
4
Make a front-end in which to installbattery, which feeds the micro-headphone. It can be made of any hard metal material. For example, take a coin of 5 cents and bend under heat. Solder the front panel with the board and rinse off the flux. Check the multimeter for a short circuit.
5
Insert the battery into the front. Check for sound. To do this, touch with tweezers or a screwdriver to the bases of the transistors, if you hear a hiss, then the device is correctly assembled. After that, assemble the micro-headphone in a self-made housing or wrap it with electrical tape. Use a thick wire to hold the ear holder, which is also wrapped with tape or other material for ease of use.
