PPT common problem and trobleshooting for B902 презентация

Common problem Ⅰ
Dust point / Small objects

Problem I - Maintenance Steps 
Open backshell with fingers dierectly
1
2

Problem I - Maintenance Steps ②
Remove the plastic shell
1
3
2

Problem I - Maintenance Steps ③
Remove the button

Problem I - Maintenance Steps ④
Remove the inner screw

Problem I - Maintenance Steps ⑤
Disconnect the ribbon cable of Camera/Button/TP/LCD and so on

Problem I - Maintenance Steps ⑥
Remove the speaker

Problem I - Maintenance Steps ⑦
Remove the mainboard
2
1

Problem I - Maintenance Steps ⑧
Remove the battery
3
1
2

Problem I - Maintenance Steps ⑨
Remove the camera and LCD
1
4
3
2

Problem I - Maintenance Steps ⑩
Blow surface of TP and LCD with air pressure gun

Common problem Ⅱ
The function of camera is abnormal

Problem Ⅱ - Maintenance Steps ①
Open backshell with
1
2

Problem Ⅱ- Maintenance Steps ②
Remove the plastic shell
3
2
1

Problem Ⅱ - Maintenance Steps ③
Remove the button

Problem Ⅱ - Maintenance Steps ④
Remove the inner screw

Problem Ⅱ - Maintenance Steps ⑤
Disconnect the ribbon cable of TP/LCD/camera/button and so on

Problem Ⅱ - Maintenance Steps ⑥
Remove the speaker

Problem Ⅱ - Maintenance Steps ⑦
Remove the mainboard
1
2

Problem Ⅱ - Maintenance Steps ⑧
Remove the camera

Problem Ⅱ- Maintenance Steps ⑨
Check the cmera and its ribbon cable whether they are good

Problem Ⅱ- Maintenance Steps ⑩
If they are bad,you can change and install new one
1
2

Problem Ⅱ- Maintenance Steps ⑾
Then the camera will be used as normall