Mainly power IC did not get reset to maintain the signal sent by the CPU, mainly because of the cpu to the leads of the power IC circuit cause. Current higher than 1000mA, short-circuit protection. Need a focused examination of mobile phone circuit B + circuit, such as tube power supply filter capacitor, power IC, switch control logic supply, RF power tube, power amplifier, vibrator circuit; Socket whether short-circuit, after the shell Do you want to short circuit. CPU work (50ma around) - the software work (60-100ma) - the search network (200ma or so) - standby (10-20ma transition). Leakage can try demolition excluded). Large leakage current: (200ma above). The power input until the components. Such as: power IC amplifier back-up battery power supply regulator tube driver tube-to-ground capacitance - Available temperature measurement method. cell phone jammer has its specific advantages.
Such as firm power in 40 - 60ma, exclude software, power supply, CPU fault, not boot to replace the 32.768 crystal. No search current network: the CPU-free output of the RX-ON signal. Check chip, CPU, power supply IC power supply to the receiver circuit. line, or one or several function keys failure, it certainly ranks of the public line of the channel CPU disconnected. All failure, this situation is more complicated, said here today that the complex is not a repair process is complex, but too much because the cause of the button is all failure. Varistor leads, in fact, encounter the key failure of the machine, if so, pressure-sensitive first consider to be removed, no it does not affect the use, and it should be a failure. So that cell phone jammers will be much easier and much more convenient.
Software reasons, the program disturbance causes the CPU can not correctly identify the instruction. Need replanting or replacement CPU Weld or partial damage, (actual repair I have not encountered this situation). Continuous repair all three key failures (including switching key) is not the above circumstances, the phenomenon has a voltage as function keys and number keys inside and outside the ring, the first annual maintenance fee the King of the boss demolition of pressure-sensitive, plant the CPU, the software to do, is they might see the boot diode, the dynamic power, the way a change, I get, and later two direct exchange (there is took down the welding). Written here, to help all of us, an honest man, really do not make money with no replies posted, if we feel useful, please support the top. It is for the useful and practical use of phone jammer of the customer.
The handset display technologies change can not be ignored. The smartphone is undoubtedly the trend of the mobile phone industry in 2010, is also considered as a new growth point of the mobile phone industry. With the 3G in the global popularity of mobile Internet applications, this also allows the phone to taking on more integration task. " Phone CPU frequency climbing 1GHZ processors for mobile phones and mobile phones on 2010 Mobile World Congress to do the show. Rise in 2009, touch the wave did not stop, and intensified, the capacitive multi-touch screen technology is also ever-changing. When more and more people will be the focus of attention is focused on "smart phones", but they ignore the new requirements of the smart phone integration features to the mobile phone. Therefore, many factories pay much attention to the technology innovation of cellphone jammer .
When the phone as a portable Internet devices, as an anytime, anywhere to do the navigation GPS, when using a mobile phone anytime, anywhere listening to music, play games, do you notice in the sunlight, the phone screen will be very vague, so that mobile phone integration characteristics can not be cast, to play your phone's interest doused with cold water? Today, I want to talk about is the phone display technology changes, I personally think that the technology changes and even comparable to when color screen instead of black and white screen mobile phone, make the strength of vision in the name of the mobile phone companies to achieve transcendence. Windows phone 7 phone displays high demands. In fact, the development of mobile phones has already begun to PC development model: horizontal integration and standardization of age. And at the same time, the manufacturer needs to pay some attention to the technology improvement of cell phone jammer .
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