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Flow Chart of Troubleshooting
9-5
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5
47
C
2
17
C
72
2
7
8
8
9
9
66 66
67 67
68 68
69
69
7
7
70 70
1
7
71
58
59 59
6
6
60 60
61
61
62
62
63 63
64 64
65
65
50
51 51
52 52
53
53
54 54
55 55
56 56
57
57
58
44 44
45 45
46
46
47
47
48 48
49
49
5
5
50
36
37 37
38 38
39
39
4
4
40 40
41 41
42 42
43
43
29 29
3
3
30 30
31
31
32 32
33 33
34 34
35
35
36
21 21
22 22
23
23
24
24
25 25
26 26
27
27
28
28
15
15
16
16
17
17
18 18
19
19
2
2
20
20
HDC700
1
1
10
10
11
11
12
12
13
13
14 14
3
0
7
C
4
17
C
40
7
D
7
17
C
00
7
C
9
27
C
6
17
C
50
7
D
4
27
C
5
17
C
7
27
C
6
27
C
4
47
C
VDD_KEY_3.3V
64
7
C
9
17
C
VBATT_CTRL
8
17
C
3
17
C
0
07
R
1
07
C
8
27
C
5
27
C
1
17
C
2
0
7
C
SPK_N
SPK_P
5
0
7
C
I2C_SCL
CAM_MCLK
CAM_PCLK
CAM_FLASH_MODE
MCAM_RESET_N
VCAM_EN
CAM_PWR_ON
VCAM_RESET_N
CAM_D(0)
CAM_D(2)
CAM_D(4)
CAM_D(6)
CAM_VSYNC
CAM_PWR_ON1
MCAM_EN
I2C_SDA
CAM_HSYNC
CAM_D(1)
CAM_D(3)
CAM_D(5)
CAM_D(7)
LCD_RS_F
LCD_D2(17)_F
LCD_D2(16)_F
LCD_D2(15)_F
LCD_D2(14)_F
LCD_D2(13)_F
LCD_D2(12)_F
LCD_D2(11)_F
LCD_D2(10)_F
LCD_D2(8)_F
CAM_FLASH_EN
LCD_D2(2)_F
KEYSENSE(2)
KYPD_17
KEYSENSE(4)
KYPD_13
KEYSENSE(3)
KYPD_15
LCD_D2(1)_F
LCD_WE_N_F
LCD_CS_N_F
FRAME_SYNC_F
LCD_RESET_N_F
LCD_D2(7)_F
LCD_D2(6)_F
LCD_D2(5)_F
LCD_BL_EN
LCD_D2(4)_F
LCD_D2(3)_F
YES
NO
R700 is 'High'?
LCD backlight does not
work
NO
C724 is 'High'?
Change PBA
Check U400
YES
END
YES
Repalce the LCD module
YES
