PPT common problem and trobleshooting for B902

1.

The common problem and
troubleshooting of Tablet
The way of troubleshooting
and steps of pictures
presentation for B902

2.

Common problem Ⅰ
Dust point / Small objects

3.

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

4.

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

5.

Problem I - Maintenance Steps
Remove the button

6.

Problem I - Maintenance Steps ④
Remove the inner screw

7.

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

8.

Problem I - Maintenance Steps ⑥
Remove the speaker

9.

Problem I - Maintenance Steps ⑦
Remove the mainboard
1
2

10.

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

11.

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

12.

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

13.

Common problem Ⅱ
The function of camera is abnormal

14.

Problem Ⅱ - Maintenance Steps
Open backshell with
1
2

15.

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

16.

Problem Ⅱ - Maintenance Steps
Remove the button

17.

Problem Ⅱ - Maintenance Steps ④
Remove the inner screw

18.

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

19.

Problem Ⅱ - Maintenance Steps ⑥
Remove the speaker

20.

Problem Ⅱ - Maintenance Steps ⑦
Remove the mainboard
1
2

21.

Problem Ⅱ - Maintenance Steps ⑧
Remove the camera

22.

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

23.

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

24.

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

25.

Only for reference about abve content
Thanks for your reading