Service manual
Schematic Diagrams
B - 28 AUDIO VT1708A/ALC883
B.Schematic Diagrams
AUDIO VT1708A/ALC883
5VS_ AUD
Z2732
Z2742
PREHP_L
C718
10U _10V_08
R696
*1K_04
C542 4.7U_10V_08
JD_SENSE
BEEP
SPKR+
SPKR-
Z2749
R418 100_1%_06
MDC
AUD G
PREH P_R
R394 10K_04
C527 4.7U_10V_08
SPKOUTR-
INT-MIC-VREFO
Z2703
C730 1U_10V_06 C530
330P_50V_04
MDC MODEM
3.3VS
AUDG
5VS
AUD G
HP_R
R400 13K_04
C517 10U_10V_08
C523 1U_10V_06
Power Plane
AUDG
Z2744
R1 *0_06
AUD G
AZ_SD IN1
GPO1
+
C5 37 22U_10V_1 21 2
R640 1K_04
C555 .1U_16V_04
C508
.1U_16V_04
U15D
74LVC08PW
12
13
11
147
C535
.1U_16V_04
MU TE IN#
R414
4. 7K_0 4
C529
2200P_50V_04
R710 *0_04
Z2740
HPSEL
SPKOUTL+
Z2715
AUD G
C740
.1U_16V_04
C503
10 U_1 0V_0 8
C507
*.1U_16V_04
C526 4.7U_10V_08
AZ_SD OUT16
SPKL-
Z2756
SPD_IFO
AZ_SD OUT
EXT-MIC-VR EFO
+
C5 51 22U_10V_1 21 2
Z2711
AUD G
Z2727
Z2748
Z2739
FRONT-L
SUSB#
C497
470P_50V_06
LP 2
FCA3216KF4-121
1
2
3
45
6
7
8
JAUDIO1
CON15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
4.7uf
? REALTEK
FAE? ?
???1uf
LINE-R
LIN E-L
VREFO-C_L
Z2713
C735 .1U_16V_04
4.7uf
? REALTEK
FAE? ?
???1uf
JD_SENSE
EXT-MICL
Z2718
C545 2.2U_6.3V_06
C505
.1U_16V_04
R391 100K_04
BEE P
U14
APA2020ARL
18
21
7
22
20 15
19
3
10
11
14
1
16
9
8
6
5
4
2
17
23
12
13
24
25
26
27
28
29
30
31
32
33
RVdd
RLINEIN
LVdd
ROUT+
RHPI N ROUT-
RBYPASS
LOU T+
LOU T-
MU TE I N
SE/BTL
GND/HS
HP/LINE
MU TE O UT
SHUTDOWN
LBY PA SS
LH PIN
LLI NE IN
TJ
NC
NC
GND/HS
GND/HS
GND/HS
THREM/GND
THREM/GND
THREM/GND
THREM/GND
THREM/GND
THREM/GND
THREM/GND
THREM/GND
THREM/GND
C 559 . 01U _50 V_04
R413
4.7K_04
JMDC1
CON12_AMP
1
3
5
7
9
11 12
10
8
6
4
2
GND
Azalia_SDO
GND
Azalia_SYN C
Azalia_SDI
Azalia_RST# Azalia_BC LK
GND
GND
3.3V Main/aux
RESERVED
RESERVED
R2 0_06
C739 270P_10V_06
3.3 VS
AUDG
BEEP
C558 .1U_16V_04
AUD G
FRONT-R
R692
1K_04
C750
10U_10V_08
R399 100K_04
SDATA-IN Max: 0.5inch
AUD G
Z2724
C198 330P_50V_04
C553 10U_10V_08
VT1708
U22
1
13
2
4
5
6
7
8
9
10
11
12
34
14
15
16
17
18
19
20
21
22
23
24
25
26
37
31
33
3
29
30
28
32
35
36
27
38
39
41
40
42
43
44
46
45
47
48
DVDD_CORE
SENSE_A
NC
DVSS
SDO
BITCLK
DVSS
SDI
DVDD_CORE
SYNC
RESET N
PCBEEP
SENSE_B
PORT-E_L
PORT-E_R
PORT-F_L
PORT-F_R
CD-L
AFI LT4
CD-R
PORT-B_L
PORT-B_R
PORT-C_L
PORT-C_R
AVDD1
AVS S1
AFILT3
CAP1
AFILT2
NC
VRE FOUT -C_L
VREFOUT-F_L
VREFOUT-B_L
AFILT 1
PORT -D_L
PORT-D_R
VREF FILT
AVDD 2
PORT-A_L
PORT-A_R
JDREF
AVSS2
PORT-G_L
PORT-G_R
PORT-H_R
PORT-H_L
S/PDI F RX / EAPD
S/PDI F TX
Z2728
C736 10U_10V_08
Z2735
SPKOUTL+
AUDG
HP_L
Z2726
SPKR-
R634 10K_04
C513
.1U_16V_04
AZ_BITC LK
Z2725
R398 100K_04
C741 .1U _16V_04
11
??6 ,??DE POP???
????,??????
5V
JSPK1
CON4_SPK
1
2
3
4
1
2
3
4
PLEASE PLACE CLOSE CODEC &
AMP THE POWER INPUT PINS
PREHP_L
SPD _IFO
C495
10U _10 V_0 8
R431 200_04
Z2701
INTMIC
3.3 V
AUDG
INT-MIC-VREFO
HP_SENSE
AUD G
AUD G
Z2731
EAPD
Z2709
C 539 . 1U _16V _04
C524 4.7U_10V_08
Ra
AUD G
AZ_RST#16
U36
*G924
1
23
4 5
SHDN#
GNDBYP
OUT VIN
AUD G
Z2743
MIC_ SEN SE
R655 *10K_04
C722 4.7U_10V_08
C510
*.01U_X7R_04
AUD G
Z2752
Z2757
R393 100K_04
C732 100P_50V_04
C500
.1U_16V_04
R419 2.2K_04
5VS _AU D
HPSEL
C560 270P_10V_06
C538
.1U_16V_04
SUSB#13,15,16,20,23,33,34
SPKOUTR+
Q24
2N7002W
G
DS
C726 . 1U_16V_04
L44
HCB1608KF-121T25_06
12
C525 4.7U_10V_08
Z2734
HP_R
C793 *4.7U_10V_08
R422 100_1%_06
MICL
C554 .1U_16V_04
R410 1M_04
24 mil
3.3VS
Z2750
MUTE IN
R683 *0_04
R437
100_04
R695
*1K_04
R584 *220_04
Z2745
FRONT-L
LINE_SENSE
R654 *10K_04
2
AUDG
Z2702
Z2754
R714 0_06
R638 10K_1%_04
C533
1U_10V_06
R637 20K_1%_04
MIC _SENSE
C712
1U_10V_06
Z2714
R402 0_04
R693
*1K_04
C729 .1U_16V_04
C522 1U_10V_06
AUDG
Z2736
MIC L
MICR
R5 57 0_0 4
C499
10U _10V_08
R404 10K_04
3.3VS
AZ_SDIN016
MUTE_OU T
EXT-MICR
EAPD
R430 5.1K_1%_04
L45
FCM2012V-121_08
12
Z2738
C512
10U_10V_12
C561
100P_50V_04
AC_SPKR16
C738
22P_50V_04
C724 .1U_16V_04
PLEASE PLACE CLOSE CODEC &
AMP THE POWER INPUT PINS
3.3 VS
AUD G
GPO116
HP_L
SPKOUTL-
C731
.1U_16V_04
C716
10U_10V_08
Z2737
U15C
74LVC08PW
9
10
8
147
KBC_BEEP
????
Z2708
R641 33_04
AUDG
Z2755
C727
.1U_16V_04
C794 *4.7U_10V_08
C550
10U_10V_08
R635 13K_04
EXT-MICR
AUD G
AUD G
VOL_MU TE23
U18
MC74VHC1G14DFT2G
24
53
1
3.3VS
AUD G
AUD G
R367 *0_04
C528
.1U_16V_04
Ca
PIN GND1~9=AUDG
AUD G
AZ_SY NC
SPDIF
SPKL-
C556
.1U_16V_04
???
HPSEL
SPKOUTL-
Z2751
SPDIF
3.3V S
AUDG
R411
10K_04
LINE_SENSE
Z2712
R401 0_04
C514 1000P_50V_04
R636 39.2K_1%_04
SPKR+
C717
*.1U_16V_04
Z2753
C534
.1U_16V_04
5V S_AU D
Z2741
HP _SENSE
Power Plane
5VS_AUD
MUTE IN #
H8_BEEP
R639 10K_04
C502
10U_10V_12
R395 100K_04
C498
470P_50V_06
5VS_AUD
SPKOUTR+
3.3VS
AUDG
Z2707
CP1
8P4CX180PF
1
2
3
45
6
7
8
AUDG
AU DG
KBC_BEEP23
EXT-MICL
R322 0_06
Cb
AZ_BI TCLK16
C509
*.01U_X7R_04
R585 0_06
AZ_SD IN116
C737 10U_10V_08
AUD G
C742 .1U _16V_04
FRONT-R
C494
.1u_16V_04
C 541 . 1U _16V _04
AUDG
Z2704
C7 28 1U_1 0V_06
PREHP_R
BEEP
AUD G
AUD G
SPKL+
C557 .1U_16V_04
Cb
AZ_R ST#
INTMIC
Z2710
C548 4.7U_10V_08
AUD G
AZ_SYNC16
PREH P_L
1
LINE-L
SDATA-IN
H8_BEEP
EXT-MIC-VREFO
L54
HCB2012K-500T40_08
12
C536 270P_10V_06
U24
*TPA4411
1
3
15
13
9
11
14
18
17
2
7
5
19
10
C1P
C1N
INR
INL
OUTL
OUTR
SHDNR#
SHDNL#
SGND
PGND
SVSS
PVSS
PVDD
SVDD
PREHP_R
U16
74A HC 1G0 8GW
2
1
4
3
5
R392 1K_04
C733 .1U_16V_04
Rb
C734
.1U_16V_04
1108
Z2719
Z2720
AUDG
Z2730
SPKOUTR-
R390
10K_ 04
C515 1000P_50V_04
U17
74A HC 1G0 8GW
2
1
4
3
5
JINTMIC1
ACES/CON2
1
2
1
2
C504
*.1U_16V_04
C552 .1U_16V_04
3.3VS
MIC R
Z2747
Z2706
C707 .1U_16V_04
C7 25 1U_1 0V_06
SPKL+
AFILT4
AUDG
5VS_AUD
Z2729
R682 *0_04
R175 10K_04
C723 4.7U_10V_08
LIN E-R
TJMDC3
Z2746
12
Sheet 27 of 41
AUDIO VT1708A/
ALC883