Samsung SPH-A900 - Page 36

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Flow Chart of Troubleshooting
7-8
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50 PIN LCD CONNECTER
C
5
0
9
C
5
0
7
V
R
5
0
0
V
R
5
0
3
R502
C
5
1
5
6
7
8
9
F504
1
10
2
3
45
5
5
50
50
6
6
7
78
8
9
9
42
42
43
43 44
44
45
45
46
46
47
47
48
48
49
49
36
36
37
37 38
38
39
39
4
4
40
40
41
41
28
28
29
29
3
3
30
30
31
31 32
32
33
33 34
34
35
35
20
20
21
21 22
22
23
23 24
24
25
25 26
26
27
27
13
13 14
14
15
15 16
16
17
17
18
18
19
19
2
2
HDC500
1
1
10
10
11
11 12
12
R
5
0
1
C500
V
R
5
0
4
C
5
1
1
S3.6
C526
C
5
1
3
C
5
1
0
C501
V
R
5
0
2
V
R
5
0
1
V
R
5
0
5
C
5
0
6
C
5
1
4
V
R
5
0
6
C
5
1
7
C
5
1
6
C
5
1
2
7
8
9
F505
1
10
2
3
45
6
C
5
2
8
C527
C529
1
10
2
3
45
6
7
8
9
F502
R504
R503
C
5
0
5
10
2
3
45
6
7
8
9
F503
1
C
5
0
4
VDD_LCD_2.85 VPD
R
5
0
0
C
5
0
8
26K_EN
D2(3)
D2(1)
ED2(14)
ED2(12)
ED2(10)
ED2(8)
ED2(6)
ED2(4)
ED2(2)
ED2(0)
D2(12)
D2(14)
D2(8)
D2(10)
D2(4)
D2(6)
D2(2)
D2(0)
ED2(9)
ED2(7)
D2(9)
D2(7) ED2(15)
ED2(13)
ED2(11)
ED2(5)
ED2(3)
ED2(1)
D2(13)
D2(15)
D2(11)
D2(5)
ED2(0)
SCAN2
RE2_N
LCD_RESET
KEYSENSE3
SCAN3
KEYSENSE2
HPH_RHPH_L
RCV+
MOTOR_EN
FLASH_EN
M_DIM
WE2_N
LRS
RESOUT_N
ALERT_LED_G
ALERT_LED_R
ED2(14)
ED2(12)
ED2(10)
ED2(8)
ED2(6)
ED2(4)
ED2(2)
SCAN4
RCV-
AUDIO_EN
FLASH_STROBE
LCD_BACKLIGHT
REED_SW
MAIN_LCD_CS
SUB_LCD_CS
ED2(15)
ED2(13)
ED2(11)
ED2(9)
ED2(7)
ED2(5)
ED2(3)
ED2(1)
20PIN KEYPAD CONNECTER
VR509
VR508VR507
7
8
8
9
9
18
18
19
19
2
2
20
20
3
3
4
4
5
5
6
6
7
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
HDC502
1
1
F506
1
10
2
3
45
6
7
8
9
2
3
45
6
7
8
9
F508
1
10
1
10
2
3
45
6
7
8
9
F507
R510
S3.6
SCAN3
SCAN4
SCAN1
SCAN0
EL_EN
KEYSENSE0
KEYSENSE1
KEYSENSE2
KEYSENSE3
SCAN5
SCAN6
SCAN2
ON_SW
MIC+