
76
B
B
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 4
SA-AK180PN/PU MAIN
CIRCUIT
2/4
4/4
1/4
3/4
TO MAIN
SECTION (4/4)
TO MAIN
SECTION (1/4)
: AUDIO OUTPUT SIGNAL LINE
: CD AUDIO INPUT SIGNAL LINE
: FM/AM SIGNAL LINE
: AUX/M.PORT INPUT AUDIO SIGNAL LINE
: +B SIGNAL LINE
: -B SIGNAL LINE
: USB SIGNAL LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
I
J
L
M
N
P
O
K
C2197
3300P
R2313
100K
R2314
100K
50V1
C2302
C2304
50V3.3
R2301
4.7K
R2316
10K
50V2.2
C2303
10K
R2315
R2311
470
10
C2311
3
2
5
4
1
6
B1GFGCAA0001
MUTING
Q2311
C2301
0.68
0.12
C2195
C2193
0.1
A_GND
+9VASP
DC-DC_GND
R3908
2.2K
R3907
3.3K
R3902
2.2K
R3900 3.3K
PCONT
R3906 2.2K
R3901
2.2K
R3903 2.2K
3
2
5
4
1
6
Q3002
B1GFGCAA0001
3
2
5
4
1
6
Q3000
B1GFGCAA0001
R3905 3.3K
R3904 2.2K
3
2
5
4
1
6
Q3001
B1GFGCAA0001
MUTING CONTROL
MUTING CONTROL
MUTING CONTROL
MUTE_F
MUTE_DA
R2304
2.7K
C2313
0.022
C2202
0.056
C2305
50V3.3
470K
R2302
10
C2312
470
R2312
18K
R2303
10K
R2305
0.056
C2307
C2201
4.7
ASP_DA
ASP_CLK
C2196
0.12
C2192
0.01
0.1
C2194
R2184
10K
6.8K
R2186
C2170
10V33
1
C2045
1
C2025
1
C2085
1
C2065
K2181
0
C2191
0.01
C2183
0.47
820
R2181
R2183
10K
R2185
6.8K
C2185
0.47
C2189
0.01
C2187
4700P
1000P
C2063
1000P
C2064
R2061
470
R2062
470
1
C2046
1
C2066
1
C2026
1
C2086
0
K2182
USB+5V
4700P
C2188
R2182
820
C2184
0.47
0.01
C2190
0.47
C2186
PA_IN_GND
ROUT
LOUT
PA_IN_L
TUNER_L
CD/USB_L
AUX_L
PA_IN_R
AUX_R
CD/USB_R
TUNER_R
51
49
47
45
42
43
40
41
44
46
48
50
25
20
16
15
18
19
17
23
24
21
22
26
38
35
36
30
32 31
27
29 28
34 33
37
39
6
1
4
2
3
5
52
8
9
7
11 12
10
13
14
IC2803
C1AB00003093
GND
SDA
I_PORTR
AUDIO SIGNAL PROCESSOR
ROUT
BAS
MID
BAS
VCC
LOUT
SCL
REC
MP_L
TAPE_L
TUNER_L
CD/USB_L
AUX_L
I_PORTL
PRE-IN
PRE-OUT
M
ID
TRE
PRE-IN
REC
TAPE_R
MP_R
AUX_R
CD/USB_R
TUNER_R
PRE-OUT
MID
BAS
BAS
TRE
MID
P1
1
P1
Summary of Contents for SA-AK180PN
Page 21: ...21 Fig 3 Fig 4 ...
Page 22: ...22 Fig 5 ...
Page 33: ...33 9 2 Main Components and P C B Locations ...
Page 72: ...72 ...
Page 96: ...96 ...