Service manual

8.23. AUDIO AMP
POP NOISE HAVE TO DROP 3V3 FIRST THEN 12V DROP DOWN OK.
L+
L-
R+
R-
HI EARPHONE MODE
THEN MUTE AUDIO AMP.
YC124RT
YC124RT
YC124RT
YC124RT
HPL
HP-SPK
LB
RA
LA
RB
SLA
SRB
SLB
SRA
AD8256_RST
AD8256_RST
AD8256_PD
AD8256_DEF
SRB
SRA
SLA
SLB
HP-SPK
HPL
HPR
RB
RA
LA
LB
IOSCL
AD8256_SDA
AD8256_SCL
AD8256_SDA
AD8256_SCL
AOMCLK
AOSDATA1
AOLRCK
AOBCLK
AOSDATA1
AOLRCK
AOBCLK
AOMCLK
12V
GPIO8 GPIO8
AD8256_PD
IOSDA
HPR
VCC
VDDSUB
VDDLR
AOMCLK 3,20
AOSDATA1 3
AOLRCK 3,20
AOBCLK 3,20
12V 19,21
GPIO8 3
IOSDA 3,10,13,26
IOSCL 3,10,13,26
12V
VDDSUB
VDDLR
3_3AMP
3_3AMP
3_3AMP
3_3AMP
3_3AMP
3_3AMP
3_3AMP
GNDP
GNDP GNDP
GNDP
VCC
GNDP
GNDP
GNDP
GNDP
GNDP
C667
0.1U
C656
NC
C0603
L182 R121/0603 3A
C753
1n
C0603
P109
CON4 P=2.5mm
4
3
2
1
R+
R-
L+
L-
R449
1K
R396 33
R505 0
R507 100K
C761
NC
C0603
+
C449
47U/16V
+
C884
470U/16V
CE050080
C767
0.33U/50V 1206
C683
0.1U
C0603
R408
10
C682
0.1U
C0603
R394
10
C674
0.1U
L212
R121/0805 6A
L0805
C657
NC
C0603
L207 15uH SMD
C764
NC
C0603
+
C749
470U/16V
CE050080
R399 33
R402
10
C719
0.1U
C0603
R451 10K
L206 15uH SMD
L203 15uH SMD
R409
NC
C756
NC
C0603
C684
0.1U
C0603
R414
10
C658
1n
C0603
L183 R121/0603 3A
C660
1n
C0603
C758
NC
C0603
R410
10
R508
1M
C661
NC
C0603
C762
1n
C0603
L202 15uH SMD
C757
NC
C0603
R404
4.7K
R400
NC
C659
1n
C0603
L185 R121/0603 3A
C675
0.1U
C0603
L209 R121/0603 3A
L200 R121/0805 6A
R241 47
R242
47
C744
1n
C0603
C663
1n
C0603
C677
0.1U
C0603
C680
0.1U
C0603
R422
10
R506 1M
C745
NC
C0603
L186 R121/0603 3A
R397 33
I145
AD8256
36
35
34
33
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37
HPL
HPR
AGND
AVDD
PWMSA
DEF
SDA
SCL
SA1
SA0
ERROR
PD
MCLK
GND
PLLVDD
CLKOUT
DVDD
M0
DGND
M1
SDATA0
SDATA1
SDATA2
LRCIN
BCLK VDDSLB SLB HGND SLA VDDSLA VDDSRA SRA HGND SRB VDDSRB Reset
PLL_Bye
VDDLB
LB
HGND
LA
VDDLA
VDDRA
RA
HGND
RB
VDDRB
HP-SPK
L184 R121/0603 3A
R395
10
C664
0.1u
R445 4.7K
L201 R121/0805 6A
C446
1n
C0603
C759
NC
C0603
R494
10
+
C448
47U/16V
R511 33K
L830 R60/0603 300mA
ADJ
OUT
IN
I148
AIC117-3.3V/SOT223
3
2
1
4
C768
1n
C0603
C755
0.1U
C0603
+
C673
47U/16V
R504 0
R393
10
+
C885
470U/16V
CE050080
C676
0.1U
C0603
E
B
C
SOT
23
Q118
MMBT3904
1
3
2
+
C750
470U/16V
CE050080
R398 0
R413
NC
C447
1n
C0603
C754
1n
C0603
P110
Ear Phone_Jack
2
10
11
3
1
+
C671
47U/16V
CE0250050
L208 R121/0603 3A
+
C672
(NC)47U/16V
C763
NC
C0603
R450
1K
C668
0.1U
R417
NC
L210 R121/0603 3A
C751
0.33U/50V 1206
R403
4.7K
C717
0.1U
C0603
C666
0.1U
C0603
C752
NC
C0603
R401
10
R455
10K
C662
0.1U
VCC1,2,4,7,10,12,14,20,21,25
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