Shivaki STV-24LEDGR7, Service Manual

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Title
Size Document Number Rev
Date: Sheet of
10
MSD309PX V3.0-A
<RevCode>
8
Custom
Saturday, June 26, 2010
5*7
GAIN1 GAIN2
0 0
1 0
0 1
1 1
19.5DB
25.5DB
29.5DB
33.5DB
GAIN 用于调整功放的增益
会有影响待机功耗， STB SW set low
A
B
C
D
5 4 3 2 1
D
C
B
A
1 2 3 4 5
bom
bom
bom
注意1517时候贴方法
电路简化
NC
NC
NC
1 2
C229 10uF/10V
1 2
C214
470nF/25V/0603/X
1 2
C197
10uF/25V
1 2
C230
470nF/25V/0603/X
1 2
C193
470nF/25V/0603/X
1 2
C224
470nF/25V/0603/X
1 2
C201
10uF/10V
1 2
C222
470nF/25V/0603/X
1 2
C225 1uF/16V/0603/X
1 2
C200 1uF/16V/0603/X
1 2
C226
470nF/25V/0603/X
1 2
C192
470F/25v
1 2
C203
NC
1 2
C223
1uF/16V/0603/X
1 2
C227
470nF/25V/0603/X
1 2
C228 1uF/16V/0603/X
1 2
C207
470nF/25V/0603/X
1 2
C215
470nF/25V/0603/X
1 2
C212
470nF/25V/0603/X
1 2
C9
470nF/25V/0603/X
1
IN1
2
SGND
3
SVRR
4
OUT1
5
PG
ND
6
OUT2
7
VCC
8
MUTE
9
IN2
10
GND
11
GND
12
GND
13
GND
14
GND
15
GND
16
GND
17
GND
18
GND
19
GND
20
GND
U20
TDA1517P
+
E23
47uF/16V/NC
E25
220uF/16V
R435
0R
R21 1K
R437
100K
R432
10K
R487 10K
R492
0R
R436
100K
R433
47K
R25
10K
R448
10K
R490
0R
R498
1k
R474
47K
R154
10K
R155 1K
R160
NC/10K
R431
NC/68K
C21
NC/1uF
C221
1uF
C213
1uF
C216
1uF
C217
1uF/16V/0603/X
+
E20
470uF/16V/NC
+
E21
470uF/16V/NC
+
E19
1000uF/16V/NC
R494 NC
R470
NC
R471
NC
R489 22K
1 2
R453 4.7K
12
R454
0R
12
R450
10K
12
R466
10K
12
R467
6.8K
12
R452
6.8K
1
2
3
4
CN34
CON4/2.54MM
1
23
Q46
3904
1
23
Q44
3904
1
23
Q5
3904
1
VSA1
2
STBYL
3
MUTEL
4
INA1
5
INB1
6
GND
7
AVCC
8
INB2
9
INA2
10
VREF
11
PROT
12
VSA2
13
OUT
A
2
14
OUT
A
2
15
VDA2
16
VDA2
17
NC
18
HBA2
19
HBB2
20
NC
21
VBD2
22
VBD2
23
OUT
B
2
24
OUT
B
2
25
VSB2
26
TEST1
27
GAIN2
28
GAIN1
29
CLK
30
RREF
31
DVDD
32
VD
33
PLMT*3
34
ROSC
35
TEST2
36
VSB1
37
OUT
B
1
38
OUT
B
1
39
VDB1
40
VDB1
41
NC
42
HBB1
43
HBA1
44
NC
45
VDA1
46
VDA1
47
OUT
A
1
48
OUT
A
1
49
GND
U23
R2A15120FP
12
L20
L-10UH(R11)
33uH
1
2
L22
L-10UH(R11)
33uH
1
2
L19
L-10UH(R11)
33uH
12
L21
L-10UH(R11)
33uH
3
1 2
D21
BAV99
1
2
3
Q42
3906
E22
220uF/16V
1
3
2
Q48
3904
12
C23
100nF
R149 NC
R144 NC
1
23
Q2
3904
R58
10K
1
23
Q4
3904
1
23
Q13
3904
12
R59
10K
1 2
R62
20K
1 2
R63
100R
CA12
47uF/16V
1
3
A
1
C1
2
C2
D4
BAT54C
12V_SW
STB_AMP
STBY
ASPK_R-
ASPK_L-
STB_MUTE
STBY
MUTE_AMP
PWD_MT
PWD_MT
STB_MUTE
12V_SW
AMP-MUTE
AMP-MUTE
12V_SW
12V_SW
12V_SW 12V_SW
AGND
SW3.3V
AMP_L
AMP_R
5VS
DET_MUTE
AMP_L
AMP_R
MUTE_AMP
Circuit of main board- 6
Page 18 of 152