Samsung SGH-U900 Service Manual page 54

Flow Chart of Troubleshooting
R505
SPK_OUT_P
R508
SPK_OUT_N
C511
SPK_SEL
VBAT
SOC700
1 1 2
2
3 3 4
4
5 5 6
6
7 7 8
8
9 9 10
10
11 11 12
12
13 13 14
14
15 15 16
16
17 17 18
18
19 20
19 20
21 21 22
22
23 24
23 24
25 26
25 26
27 28
27 28
29 29 30
30
31 32
31 32
33 33 34
34
35 36
35 36
37 37 38
38
39 40
39 40
41 41 42
42
43 44
43 44
45 45 46
46
47 48
47 48
49 50
49 50
51 51 52
52
53 54
53 54
55 55 56
56
57 58
57 58
59 59 60
60
61 62
61 62
63 63 64
64
65 66
65 66
67 67 68
68
69 70
69 70
B1
VDD
C502
R506
A1
VIP
C1
VIM
R509
C503
R511
C512
SPK_AMP_EN
R516
VBAT
R522
AMP_SPK_N
10
1
VCC
2
AMP_SPK_P
NO1
3
R530
C533
C534
1 3 4 5 6
1 3 4 5 6
2 7
2 7
R726 ZD703
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VBAT
R502
L500
A2
VSS
VOM A3
U501 PVSS B3
VOP
C3
L501
C507 TA500
SPK_N
9 8
R527
7
NC
U502 6
GND
R529
4 5
SPK_P
R713
R714
1 3
1 3
2
10-12
AMP_SPK_N
AMP_SPK_P
R514
C508
R515
C509
VOICE_OUT_N
VOICE_OUT_P
MLCD_BL
TOUCH_IRQ
LCD_VSYNC_OUT
NAND_WE_OUT
LCD_RS_OUT
LCD_DO(14)
LCD_DO(12)
LCD_DO(10)
LCD_DO(8)
LCD_DO(6)
LCD_DO(4)
LCD_DO(2)
LCD_DO(0)
NAND_RE_OUT
FLASH_EN
CAM_RST
CAM_SCL
CAM_HSYNC
CAM_VSYNC
CAM_D(6)
CAM_D(4)
CAM_D(2)
CAM_D(0)
SPK_P
SPK_N
4 5 6
4 5 6
2 7
7
ZD702