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Flow Chart of Troubleshooting
9-8. Back Light (for Color Main LCD)
Backlight does not work
Is LCD Contrast set on high
level in the Menu?
SOC700 PIN 21 = H ?
LD(0)
LD(1)
LD(2)
LD(3)
LD(4)
LD(5)
LD(6)
LD(7)
LCD_MAIN_CS
L_RS
L_WR
LCD_SUB_CS
LD(8)
LD(9)
LD(10)
LD(11)
LD(12)
LD(13)
LD(14)
LD(15)
VBAT
LCD_RESET
VBAT
VIB
R702
C704
C705
C706
C707
C708
R701
C702
Yes
Yes
Yes
END
C709
C710
C711
C712
C713
C714
C715
C716
C717
C718
C719
C720
C721
C722
C723
LCD_CONNECTOR
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
Set LCD Contrast on high level
No
Resolder SOC700 or change PBA
SOC700
5-1747912-6
22
11
44
3
3
66
55
88
77
10 10
99
12 12
11
11
14 14
13
13
16 16
15
15
18 18
17
17
20 20
19
19
22 22
21
21
24 24
23
23
26 26
25
25
28 28
27
27
30 30
29
29
32 32
31
31
34 34
33
33
36 36
35
35
38 38
37
37
40 40
39
39
42
42
41
41
44
44
43
43
46
46
45
45
48
48
47
47
50
50
49
49
52 52
51
51
54 54
53
53
56
56
55
55
57 58
59
60
C727
C728
C729
C730
C731
C732
C733
C734
C739
C740
9-14
Y(0)
Y(1)
Y(2)
Y(3)
Y(4)
Y(5)
Y(6)
Y(7)
+VDD_IO_HIGH_2.9V
VDD_2.8V_CAM
HREF
VSYNC
S_RST_IMAGE
PCLK
M_CLK
CAM_1.8V_EN
LCD_BL_EN
SPK_P
SPK_N
C726
C724
C725
C735
C736
R710
C737
C738
R711
VDD_2.8V_CAM
R707
R708
2.2K
2.2K
M_SDA
M_SCL
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