Foreword
In recent years, the national production card gsm mobile phones have grown rapidly, with the emergence of a large number of double-carded mobile phones that occupy most of the country's mobile phone market, and with the development of the 3g network, many 3g smart phones have emerged. The huge mobile phone community has brought a boom in mobile phone maintenance markets. However, the relatively low level of reference for mobile phone maintenance, mostly in previous years, has prevented many maintenance staff from coping with the increasing number of homemade mobile phone maintenance and has constrained the improvement of maintenance skills and levels of maintenance. To meet the needs of maintenance staff and the needs of various training schools and vocational schools for the training of mobile telephone maintenance personnel, we have prepared a book。
The book, which divides the gsm single card with the mobile phone, the mtk platform double card with the mobile phone, and the 3g smart phone, explains in a shallow and in-depth way the electrical principles and faulty characteristics of these three types of mobile phone in the country, the methods and techniques of maintenance, and seeks to achieve a shallow, gradual combination of theory and practice to guide readers to become homemakers in mobile phone repair。
In the mobile phone stand-alone section of the gsm card, firstly, it introduces, in easy to understand language, the wiring process of the gsm mobile phone and the reading method of the circuit map; then it analyses the cell circuit and gives readers an overview of the working principles and circuit characteristics of the gsm mobile phone, the functions of commonly used electronic and structural components of the mobile phone, and the performance and methods and techniques of use of maintenance equipment。
In the mttk double-carded cell phone section, the principles of double-chip and single-chip dual-chip mobile circuit operation and maintenance practices and common overhaul methods were first presented, and then an example of a model mobile platform maintenance programme was given to lay the groundwork for actual repair。
In the 3g smartphone section, emphasis is placed on a combination of typical 3g smartphones, such as nokia and motorola, which present the whole circuit principle of smartphones and various methods of maintenance for common failures, as well as on the other 3g smartphones, which can be used in one way or another。
The book was written by chen xiaoping of the chongqing institute of electronic engineering and was prepared with the participation of comrades wen wen weng, hwang-ping, wang bixun, cai xiaoqing, li jin-jin, zhang sung-qing, yang chong, liu xing, liu wing, wang ying, zou kai-yo, zhang xiaoyu, zhang zhang zheng fang, gao aoi and others. In preparing this report, we have taken into account the mtk platform of the guangzhou electronics technology corporation and the 3g smartphone graphs and guidebooks on the principles of the circuit, and express our sincere thanks。
Due to the author's qualifications, the book is inevitably missing, and the reader is kindly asked to be critical of its shortcomings. Qq:4180543 can be contacted in a timely manner if the matter is relevant。
Book contact: tan peixiang@phei. Com. Cn
October 2010
Editor
