Skyworth 5R81A-50E79, Service Manual

Page: 28 / 38

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
S K Y W O R T H
创 维
From RTD2975
PWDN
RESET
AMP_VDD
OUT_R+
AMP_VDD
AMP_VDD
OUT_R-
RESET
I2S_O_D0
I2S_O_WCLK
I2S_O_MCLK
I2S_O_SCLK
AMP_MUTE
PWDN
OUT_L+ LOUT+
LOUT- OUT_L-
ROUT+
ROUT-
OUT_R-
OUT_R+
OUT_L-
OUT_L+
+24V AMP_VDD
DM_3V3
DM_3V3
DGND
PWR_12V +24V
DM_3V3
D_5V
PWR_12V
AMP_MUTE
POWER_MUTE
I2S_O_WCLK
I2S_O_D0
I2S_O_MCLK
I2S_O_SCLK
I2C_SDA
I2C_SCL
I2S_O_D0 <3,19>
I2S_O_WCLK <3,19>
I2S_O_MCLK <3,19>
I2S_O_SCLK <3>
AMP_MUTE <4>
Size
Document Number
R e v
Date: Sheet o f
Title
Design Check Auditing Modify Rev
A Custom
5 17 Thursday, June 20, 2013
AUDIO AMP
Check of name Auditing of name Modify Rev
Size
Document Number
R e v
Date: Sheet o f
Title
Design Check Auditing Modify Rev
A Custom
5 17 Thursday, June 20, 2013
AUDIO AMP
Check of name Auditing of name Modify Rev
Size
Document Number
R e v
Date: Sheet o f
Title
Design Check Auditing Modify Rev
A Custom
5 17 Thursday, June 20, 2013
AUDIO AMP
Check of name Auditing of name Modify Rev
C156 4.7uF
L46 22uH/2A7
C490
0.1U/50V
+
C129
100uF/16V/35V
R67 1K
C
169
1nF/50V
C175 33nF
D6
BAT54C
1
2
3
C139 33nF
CON4
SPL
2
1
3 4
C157 33nF
R93
33R
C131 0.047uF/16V
R69
10K
C491
330pf/50V
C138 4.7nF
C212
22P
R94
33R
C
173
0.1uF/50V
C
140
2.2nF/50V
C486
0.1U/50V
C520
0.1U/50V
C
160
0.1uF/50V
L30 150R_1A
C224
NC_22P
C179
1nF/50V
R96 100R
Q1
MMBT3904
1
2
3
C
174
1uF/50V
R113
0R
R88
18.2K 1%
C150
10uF/10V
L35 FUSE_3A
1 2
D5
IN4148
C492
330pf/50V
CON5
SPR
2
1
3 4
C
149
1nF/50V
R76 10K
C213
22P
R66
100K
C487
330pf/50V
R64
NC_0R
R95 100R
C225
NC_22P
C128
1uF/16V
L49 22uH/2A7
L48 22uH/2A7
C178
0.1uF/50V
R70
1K
R9
7
33R
R72
47K
R83 NC_10K
C519
0.68U/50V
L50 22uH/2A7
C1
7
2
10uF/10V
C
159
1nF/50V
R7
8
10K
R73
100R
C
148
0.1uF/50V
Q2
2N3906
1
2
3
R81 NC_100K
R74
1K
C512
0.1U/50V
R489
18ohm
U6
TASS5707P
OC_A
DJ
7
P
V
DD_A
2
P
V
DD_A
3
BST_
A
4
GV
DD_OUT
5
SSTIMER
6
AVDD
13
A_SEL
14
OUT_A
1
OSC_RES
16
VR_DIG
18
LRCLK
20
GND
29
SDIN
22
AG
N
D
30
VR
EG
31
GV
DD_OUT
32
BST_
D
33
PBTL
8
AVSS
9
P
LL_FLTM
10
P
LL_FLTP
11
VR
_
A
N
A
12
MCLK
15
SCL
24
RE
S
E
T
25
STEST
26
DV
DD
27
DV
S
S
28
DVSSO
17
PDN
19
SCLK
21
SDA
23
P
V
DD_D
34
P
V
DD_D
35
OUT_D
36
PGND_CD
37
PGND_CD
38
OUT_C
39
PVDD_C
40
PVDD_C
41
BST_C
42
BST_B
43
PVDD_B
44
PVDD_B
45
OUT_B
46
PGND_AB
47
PGND_AB
48
+
C
211
220U
/35V
R84
10K
L29
FUSE_3A
1 2
R488
18ohm
C147 0.1uF/16V
R65
NC
C137 0.047uF/16V
C
141
1uF
C223
22P
R79
470R
C222
22P
C489
330pf/50V
R528
18ohm
C158 33nF
C
166
0.1uF/50V
C515
0.68U/50V
C144
0.1uF/16V
R8
0
22.1K 1%
C1
7
1
0.1uF/16V
R68
10K
R91
33R
R77
470R
R527
18ohm
D20
NC/Z DIODE 5V6
R87
33R
C132
4.7nF