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Flow Chart of Troubleshooting
9-3
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9-1-2. LCD Part
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
LCD displays nothing
YES
NO
NO
Is there any signal at
HDC 700: pin
#20, #21, #23, #25
Check the F700, F701, F702,
F705, F706, F707
Change the PBA
YES
END
YES
Is there any signal at
F701, F702, F704,
F705, F706, F707?
YES
Change the LCD module
NO
R700 is 'High'?
Check the U400
YES