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SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-
16
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2-1-7. Audio-Receiver Part
NO
NO
YES
YES
receiver does not work
END
Check the connection
status spk to
CN101/CN800
Check the
R236, R239
Is receiver ok?
YES
Change receiver
NO
Resolder and check the board
to board connector
Change or resolder
R236, R239
C811
V_IN
C806
V_IN
VBAT
C807
C805
C809
R809
58
59
59
6
6
60
60
7
7
8
8
9
9
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
50
36
37
37
38
38
39
39
4
4
40
40
41
41
42
42
43
43
29
3
3
30
30
31
31
32
32
33
33
34
34
35
35
36
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
15
15
16
16
17
17
18
18
19
19
2
2
20
20
21
1
1
10
10
11
11
12
12
13
13
14
14
CN800
LCD_VSYNCA
LCD_CSA
LCD_BACKLIGHT
SOUND_EN
RCV+
RCV-
KB_nSCAN(3)
KB_nSCAN(5)
KB_nSCAN(4)
KB_nIN(3)
KB_nIN(2)
KB_nIN(1)
KB_nIN(0)
KB_nIN(4)
PWR_ON_AP
CODEC_OUT_L
LCD_nRESETA
LCD_SDIA
LCD_VDENA
LCD_VCLKA
LCD_HSYNCA
G2
G1
G0
B4
B3
B2
B1
B0
LCD_SCLKA
CODEC_OUT_R
CODEC_AGND_R
R4
R3
R2
CODEC_AGND_L
SVC_SLIDE_LED
R1
R0
G5
G4
G3
