1. White line: negative voltage Data line (marked with: Data- or USB Port -) Green line: positive voltage data line (marked with: Data or USB Port) Black line: ground (marked with: GND). The general arrangement order is VCC, D-, D, GND, the arrangement is fixed, but there are two directions, the wrong connection of the data line can not identify the usb device at most, the power line must not be connected wrong, it is recommended that you read the motherboard manual or use a multimeter test.
2, mobile phone motherboard signal pin welding is a very important one in mobile phone maintenanceStep. First, the function and position of each pin must be understood to ensure proper connection. Secondly, before welding, make sure that the pin and welding pad have enough spacing to avoid short circuit. Finally, it is necessary to weld at the appropriate temperature and time to ensure the quality of welding. Only by correctly welding the signal pin, the mobile phone motherboard can work normally.
3. First, the tool is ready, as shown in the figure. Then strip the wire to a suitable length (about 2 cm), as shown in the figure. Then weld the four wires correctly in order (red power positive, black power negative, white data negative, green data positive), as shown in the figure. Then the joint part is specially wrapped with hot melt adhesive and heat shrink tube, as shown in the figure. Finally, the success can be achieved, as shown in the figure.
4, the general arrangement order is VCC, D-, D+, GND, the arrangement is fixed, but there are two directions, the wrong connection of the data line is at most can not identify the usb device, the power line must not be connected wrong, it is recommended that you see the motherboard manual or use a multimeter test. Each USB interface can provide a current of +5V500MA to the peripheral, if the connection is reversed, the light will burn the usb device, the heavy motherboard will be scrapped. Mobile phone charging safety precautions Avoid long periodsCharging between.
5, the general wireless charging output is five volts, is to be connected to the phone's data cable jack here. Android head as long as one positive and one negative on the line, Apple 3-4 with, more than two are D D-, the 2 can be short together is 3, type-c connector is one positive and two negative. If the wireless reception adds a battery management chip, then the output is 2V, you can directly connect the positive and negative terminals to the mobile phone battery to charge.
6, the data line has four lines, respectively: data receiving line, data sending line, power ground line, power positive line; The colors of the lines are white and green, black, red.
1, the wireless charging of this model does not respond to the reasons may be the following: the phone case is too thick, the charger is faulty, the phone is not placed correctly and the battery is faulty. The reason why the Apple 14pro wireless charging does not respond may be as follows: the phone case is too thick, resulting in the wireless charger cannot contact the charging coil on the phone. The wireless charger fails to charge properly. The phone is not placed at the right Angle. Cell phone battery overheating or damaged.
2. Make sure the switch is on. Charging dock or charger issues: If you've made sure your device supports wireless charging and you've turned on the option, but still can't use wireless charging, check that the charging dock or charger you're using is compatible and places your iPhone correctly. Make sure the base or charger has the Qi wireless charging standard, and make sure your phone is properly placed on the base, so that a wireless charging connection can be established between the phone and the charger.
3, the phone case is too thick will affect the mobile phone charging coil and wireless charger induction, resulting in normal chargingElectricity. Therefore, it is recommended to remove the protective case of the mobile phone before using the wireless charger to charge; The charging coil area in the mobile phone is small, and if the mobile phone is placed incorrectly when wireless charging is used, it will also lead to normal charging.
To see which part of the repair, generally the outer screen only takes an hour, if the inner screen is broken, it is probably several hours or days. Apple phone after-sales repair if externalThe damage is usually a few hours, no more than a day. But if it is the internal motherboard and other more complex things damaged, it may wait for about three to five days, if the after-sales notice needs to return to the factory for maintenance, it may wait for ten to fifteen days.
First of all, it's worth noting that the motherboard of the iPhone 12 Pro Max is the core component of the entire device and is responsible for controlling all hardware and software operations. If the motherboard fails, it usually needs to be replaced or repaired. Repair prices The price of repair usually depends on the specific problem of the equipment and the area where the repair is located. If the entire motherboard needs to be replaced, the costIt may be relatively high, and the price of fixing the failure may be more flexible.
iphone12promaxac waiting for return repair will be unable to repair, return to the factory failed or after maintenance many functions have obvious problems serious will not be able to use.
Of course, this will come apart. If the specific cause is not found, the machine will be dismantled for testing.
iphone12 lock screen key suddenly pressed soft, unlike the obvious rebound on the left, this is a hardware failure, need to return to the factory. If the phone is guaranteed, it must be tested after saleRepair, or the warranty service will be terminated. If you are insured, you can go to the mobile phone repair shop to test, and the repair cost is much cheaper than the after-sales service. Features: The antenna system adopts a new antenna system to improve 5G performance.
However, if the internal hardware of the Apple 12 Pro Max fails or is damaged due to water flooding, it can be difficult and expensive to repair. Official Apple repair services may require the replacement of damaged or damaged parts, which can cost hundreds of dollars, and this does not necessarily include a waterproof warranty.
Repair mobile phone wireless charging directly to after-sales, after-sales repair for the original, the price will be more expensive, ordinary maintenance department is cheaper, but not the original.
If the data cable can not be charged, you can replace the battery or use a universal charger to try, if other charging devices can charge the battery, it may be poor contact of the data cable; If the phone can be turned on normally, it is recommended to back up the data in the phone and restore the phone to factory Settings. Please bring the purchase invoice and repair card to the after-sales service center for inspection.
Xiaomi mobile phone wifi hardware module is broken, it is recommended to see what is wrong first, if it is a system problem, directly rebrush a system on the line; If the wifi management software is broken, re-start the next one; If the hardware module is really broken, take it to repair, that is, about 100 yuan can be repaired, but pay attention to do the best to find a regular repair shop or Xiaomi repair point, you can have quality assurance.
Wireless card module chip can not be repaired, he is integrated on the motherboard, if it is a drop need to weld can be removed from the new disassembly to see whether the wireless card module chip is completely bad