Service manual

Schematic Diagrams
AUDIO AMP, USB2.0* 2 B - 29
B.Schematic Diagrams
AUDIO AMP, USB2.0* 2
Sheet 28 of 44
AUDIO AMP,
USB2.0
AMPG
+5VS_ AMP
AMPG
+5V S
+VCCUSB2
+VCCUSB2
+5V S
+VCCU SB2+VC CUSB2
+5VS _A M P
+5V S_AM P
AMPG AMPG
AMPGAMPG
AMPG
AMPG
AMPG
+3V
+3V
+3V
+5 VS [8,1 5,19 , 20, 2 1, 23 ,25,2 6,27 ,30, 31]
MIC_1[27]
USB_OC1# [17]
U SB_ PP3 [17 ]
U SB_ PN 3 [17]
LFE[27]
FRONT-L[2 7]
FRONT-R[27]
H8B EEP[25]
H8_B EEP [27 ]
+3 V [ 4,15 ,17,1 8,19 , 20,2 1, 22 , 26, 31,3 2,33]
VOL_MUTE [25]
INT_MIC
SE/BTL#
HE ADP HON E-R
HE ADP HON E-L
INT_MI C
Z2902
HEADPHONE-L
MUT E_I N
DD -SPKL+
Z2904
MUT E_O UT
H EAD PHON E -R
SE /BTL #
Z2907
Z2905
DD -SPKR+
Z2903
Z2908
SPKR+
SPKR-
Z290 1
SPKL-
SPKL+
DD -SPKR-
Z290 6
DD -SPKL-
Z2909
Z2910
JS PK_2
*85 204-040 01
1
2
3
4
C706
0.1u_04
C7 57 0.1u _04
CP6
* 8P4C X180p
1 2 3 45
6 7 8
R192 5.1K_04
C 446 1u_0 4
JINTMIC_1
88 266 -0200
1
2
R4 43 10K _04 _1%
C305
0.1u _04
+
C4 47 47 u/6.3 V_B
C705
10u_08
CP5
8P4C X180p
1 2 3 45
6 7 8
C7 56 0.1u _04
C709 5p
C7 58 0.1u _04
R25 6 10K_ 04_1%
C746
10 u_0 8
JAUDIO1
87216-1606
12
34
56
78
910
11 12
13 14
15 16
C316
0. 1u_0 4
LP4
FCA3216K4-1 21T03
1
2
3
4
6
5
7
8
U15
RT9701CBL
1
2
34
5
VOUT
GND
VINVIN
VOU T
C7 55 0.1u _04
C297
10u _08
R22 0 10K_ 04_1%
C392
10u_08
C742 6p
R406 12K_04_1%
R420
1K _04_ 1%
C745
0.1 u_04
R 191 10 K_04
C322
10u_ 08
L19
H CB 2012 K-50 0T40
U30
APA2 020A
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
RLI NEIN LVdd
ROUT+
RHPIN
ROUT-
RBY PASS
LOUT+
LOUT-
MU TE IN
SE /BTL
GND/HS
HP/LINE
MUTE OUT
SH UTD OWN
LBY PAS S
LHP IN
LLIN EI N
TJ
NC
NC
GND/HS
GND/HS
GND/HS
TH R EM/ GN D
TH R EM/ GN D
TH R EM/ GN D
TH R EM/ GN D
TH R EM/ GN D
TH R EM/ GN D
TH R EM/ GN D
TH R EM/ GN D
TH R EM/ GN D
C 387 1u_0 4
R441
100K_04
C282
33 0p
+
C718 47u/ 6.3V _B
JS PK_1
85 205-0 400
1
2
3
4
C704
0.1 u_04
R459
1 K_0 4_1%
L42
HC B2012K-500T40
C224
22 00p
R 445 10 0K_ 04
C719
680p
C750
680p
U10
74AHC1G08
1
2
5
4
3
R134
1M
U12
74AHC 1G14
1
2
53
4
C2 14 0. 1u_04
R132
10K_04
C2 21 0. 1u_04
TO AUDIO BOARD
USB CONN.
1
2
15
16
JAUDIO
21
JINTMIC_15
4
Mini 20 Mil
FOR M550J
JSP K_15
1
JSPK_14
FOR M540J
1
4
PC BEEP
M540J R406 = 10K_1%