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9 Note Check the phone's menu settings are correct, the failure is due to a lot of phone menu is not set in the correct state caused .
10. The service is completed , cleaning , sorting table is necessary. Let homing repair tools , all the attachments ( long screws , antenna cover, rubber, insulation , etc. ) Replace , repair prevented a little something .
Maintenance personnel should have some basic terminology and mobile phone repair basic knowledge in order to determine the approximate range of the original return and failure to produce , to avoid each test or find trouble spots in the entire circuit board in accordance with its principles .
Fourth, the troubleshooting steps
No matter what kind of phone failure , must undergo asked , seeing, hearing , touch, think , repair six stages. But for different models , different fault , different repair method , the time for six different stages of it .
1 Q.
The same as doctor visits , first understand some basic information to the user . Such as process failure and the reasons , the use of mobile phones and old age
The extent of the situation. This inquiry should be further observation to note and be thinking leads.
2 Look
Since many types of mobile phones , will inevitably encounter little contact with his former models or new models on the market less , see specific models should be combined . Such as mobile phone repair , green LED status indicator to look at whether the machine blinks when the outgoing call information display and so on. Combining these observations provide ideas to further diagnose the fault .
3 Listen
Can be repaired phone voice quality , volume , the sound is intermittent and so determine the initial failure.
4 . Touch
Mainly for the power amplifiers, transistors, integrated circuits and certain components. You can feel the touch surface temperature level , such as hot, may wonder whether the current is too large or heavy load , you can roughly determine the experience of fault location .
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