Service manual

Schematic Diagrams
B - 28 Audio Codec VIA 1812
B.Schematic Diagrams
Audio Codec VIA 1812
C270 1u_6.3V_X5R _04
H DA_SYN C14, 29
MIC1-L30
BEEP
HDA_RST#14,29
MIC 1-R30
C469 0.1u_10V _X7R_04
HD A_ SPKR14
C468 0.1u_10V _X7R_04
PC BEEP
C267 0.1u_10V _X7R_04
C432 0.1u_10V _X7R_04
R331 22_04
R329 22_04
R323 22_04
R322 22_04
EAPD _M OD E
R7 8
2.21K_1%_04
R318 22_04
R321 4.7K_04
C1 2 9
330p_50V_X7R _04
AZ_ BITCLK_R
AZ_SDO UT_R
AZ_ SYN C_ R
INT_ MIC
FR ON T-R
FR ON T-L
AZ_ SDIN 0 _R
AZ_RST#_R
FOR EMI
C ode c pi n 1 ~ p in 11 a nd p in 44 ~ pi n 48
a re Di gi tal s ig na ls.
T he ot he rs ar e An alo g si gn als .
AMP (N7010)
FRO NT-R
FRO NT-L
D21 *SCS355V
AC
PIN 13 ,PIN34 JD_SENSE
Layout Note:
PCH_MUTE#19
AUDG
INT_ MIC _R
C 459 2.2u_16V_X5R _06
MIC 2 _L
C 257 4.7u_6.3V _X5R_06
MIC 2 _R
C 256 4.7u_6.3V _X5R_06
Ver y cl os e t o Au di o C od ec
C252 *0.1u_10V_X5R_04
C268 *0.1u_10V_X5R_04
C269 *0.1u_10V_X5R_04
MIC 1_ L
MIC 2_ R
C263 *0.1u_10V_X5R_04
MIC 2_ L
MIC 1_ R
La yo ut No te :
ALC_GPIO0
NEAR CODEC
AUD G
R191 5.1K_1%_04
AUD G
C 457 2.2u_16V_X5R _06
Gain Settings
GAIN0 GAIN1 AV(inv) INPUT IMPEDANCE
0 0 6 dB 90 k
0 1 10 dB 70 k
1 0 15.6 dB 45 k
1 1 21.6 dB 25 k
DIGITAL
ANALOG
U2 3
VT1812
DVDD
1
G PIO0/D MIC- DATA1 /2
2
G PIO1/D MIC- DATA3 /4
3
DVSS1
4
SD ATA-OU T
5
BIT-C LK
6
D VSS2
7
SD ATA-IN
8
DVD D-IO
9
SY NC
10
R ESET#
11
PC BEEP-IN
12
Sense A(JD 1)
13
LIN E2-L
14
LIN E2-R
15
MIC2-L
16
MIC2-R
17
LIN E1-VR EFO
18
MIC2-VREFO
19
LIN E2-VR EFO
20
MIC1-L
21
MIC1-R
22
LI N E 1 - L
23
LINE1-R
24
AVSS1
26
VREF
27
MIC1 -V R E F O
28
CBP
29
CBN
30
CPVEE
31
HPO UT-R
32
HPOUT-L
33
Sense B(JD 2)
34
LO U T 1 - L
35
LOUT1-R
36
MO N O -OU T
37
LO U T 2 - L
39
JD R E F
40
LOUT2-R
41
A VSS2
42
NC
43
DMIC-CLK3/4
44
SPD IFO2
45
DMIC-CLK1/2
46
EAP D
47
SPD IFO1
48
AVDD 2
38
AV DD1
25
P IN2 5, PI N3 8 ? 1? 1 0u F/. 1u F
AU DG
C 452 10u_6.3V_X5R_06
SPK OUTL+
SPK OUTL-
C438
0.1u_10V_X7R _04
.
L2 3 H C B 1 6 0 8K F - 12 1 T 25
C442
10u_6.3V_X5R _06
C4 3 3
*0 .1 u_ 1 0V _X 5 R_ 0 4
C292
* 1u_6.3V _X5R_04
R3 14
C467
10u_6.3V_X5R_06
5VS_AUD
5V
C291
0.1u_10V_X7R_04
Layout Note:
Very close to Audio Codec
R 335 0_04
AU DG
AU DG
R 338 0_04
AU DG
R 181 20K_1%_04
MIC 2 -V RE F O
R 334 5.1K_1% _04
C443 0.1u_10V _X7R_04
PC BEEP_C
R314 5.1K _1%_04
C434 100p_50V_NPO _04
C 435 1u_6. 3V_X5R_04 PCB EEP_RR311 10K_04BEEP
AUD G
R 179 1K_04
10/16 change
footprinter
LI N -
RIN -
GAIN 0
C437
10u_6. 3V_X5R_06
C446
* 1u_6.3V_X5R_04
R189 *100K_04
R196 *100K_04
R327 100K_04
R332 100K_04
L3 4
HCB 1005KF-121T20
C45 5
0.1u_10V_X7R_04
Thermal Pad
U22
N7010
SD #
19
RIN-
17
LIN-
5
BY PASS
10
GND
11
GAIN0
2
RO UT-
14
LO U T -
8
PVDD
6
LOUT+
4
GND
20
GAIN1
3
ROUT+
18
PVDD
15
EXPOS ED PAD
21
LIN+
9
GND
1
GND
13
NC
12
VDD
16
RIN+
7
AUD G
AUD G
C450
*10 u _6.3V_X5R _06
5VS_ REA R
AUDG
5VS
5VS
AU DG
AUD G
LI N +
AUD G
AUD G
RIN +
GAIN 1
SPK_EN
AMP_BY PASS
C462 1u_6.3V_X5R _04
C4 54
*0.1u_10V _X5R_04
U25
M C74V HC1G08D FT1G
1
2
5
4
3
3.3VS
SPK_EN
Low mute!
KB C_MU TE#28
.
L20 FCM 1005KF-121T03
C2 84
180p_50V_NPO _04
.
L22 FCM 1005KF-121T03
SPK OUTL-_R
C2 7 7
180p_50V_NPO _04
FOR E MI
SPK OUTL+_R
2 1
J_SPK1
L24
*10mil_short
H EADPH ON E-R 30
?6db
H EADPH ON E-L 30
MIC 2- VR E FO
C27 3
0.1u_10V_X7R_04
C465
10u_6.3V_X5R_06
C464
0.1u_10V_X7R_04
C2 88
0.1u_10V_X7R _04
3.3VS_AU D
3. 3 V S
.
L21 H CB1608KF -121T25
1
SPKO UTR - 30
SPKO UTR + 30
C445 22p_50V_NPO _04
J_INTMIC1
2
M IC1_L_C
R 182 75_1% _04
R 180 75_1% _04 C 253 4.7u_6.3V _X5R_06
MIC 1 _L
MIC 1 _R
C 261 4.7u_6.3V _X5R_06
M IC1_R_C
MIC 1 -VRE F O -R
CODEC (VIA1812 /ALC272)
JD 2
JD 1
ALC_GPIO1
HP_SENSE30
H P_S ENSE
M IC_ SENS E
MIC_ S E N S E30
A UDG
INT_ MIC
HDA_SDIN014
HD A_BITCLK14,29
C264 1u_6.3V_X5R _04
C460 1u_6.3V_X5R _04
EAPD _M OD E R 336 0_04
R311 VIA1812 5.1K_1%_04
ALC272 20K_1%_04
EAPD_MO DE_R
C451 22p_50V_NPO _04
C 286 *0.1u_10V_X7R_04
C 255 *0.1u_10V_X7R_04
Layout Note:
V ery c lo se to A ud io Co de c
D19 *R B551V30
AC
5V 21,24,30,31,33,34
5 V S 2 , 1 3, 1 7 , 2 0, 2 1 , 2 6, 30 , 3 1 , 35 , 3 6
3.3VS 2,10,11,12,13,14, 15,16,17,18,19,20,21,23,24,25,26,28,29,30,31,35,36
3.3VS 1.5V
R313 *0_04
C262 *100p_50V_NPO _04
3.3V 3,4,12,14,15,16,18,19,20,21,23,24,25,29,30,31,33,34,35
C289 *100p_50V_NPO _04
MIC1-R
C440
680p_50V _X7R_04
AUD G
6-02-07010-AL0
C280 *22p_50V_N PO_04
A
A
C
D1 8
BAT5 4C S3
1
2
3
C274 *22p_50V_N PO_04
R 319 *15m il_short_06
C279 *100p_50V_NPO _04
C259
4.7u_6.3V_X5R _06
J_INTMIC 1
88266-02001
PC B Footprint = 88266-2L
1
2
C447 *0.1u_10V_X7R_04
A
A
C
D2 0
BAT5 4AS3
1
2
3
ALC_VREF
C441
680p_50V_X7R _04
AUD G
KBC _BE EP28
1. 5V V IA 181 2 10 K
3. 3V V IA 181 2 5. 1K
AL C27 2 1K
MIC1-VREFO
MIC1-R
MIC1-L
J_SP KL1
85204-02001
PCB Footprint = 85204-02R
1
2
JDR EF
L3 6 * 1 5m i l_ s h or t _0 6
1.5V 4,9,10,11,21,23,29,31,33,36
R 320 4.7K_04 MIC1-LMIC 1 -VRE F O -L
Ne ar MI C con ne ct
La yo ut N ote :
R328
100K_04
HD A_SDO UT14,29
C458 22p_50V_NPO_04
5V S
Sheet 27 of 40
Audio Codec
VIA1812