Main Circuit (2/6) - Panasonic SA-AK980PU Service Manual

16.3. Main Circuit (2/6)

15 16 17
SCHEMATIC DIAGRAM - 3
B MAIN CIRCUIT
TO MAIN
SECTION (1/6)
TUNER_L C2025 1
CD_L C2055 1
AUX_L
C2075 1
JUP_L C2065 1
PA_IN_L C2085 1
iPod-L
C2105 50V4.7
DPORT_GND C2172 50V4.7
iPod-R C2106 50V4.7
PA_IN_R C2086 1
JUP_R
C2066 1
AUX_R
C2076 1
TUNER_R
C2026 1
CD_R C2056 1
C2170
10V33
AGND
REC_R_USB
C3702 10V1
REC_L_USB
C3701 10V1
R2118
3.9K
R2120 C2119
3.9K 6.3V100
MIC C2123 1
P1
18 19 20
: +B SIGNAL LINE : -B SIGNAL LINE : CD AUDIO INPUT SIGNAL LINE
C2181 C2197
50V1 3300P
Q2320
B1ABCF000176
SWITCH
R2320
22K
C2300 0.068
39 38 37 36 35 34 33 32 31 30 29 28 27
40 26
C2302 50V1
41 NC INT 25
C2303 R2301 56K
42 EXTSENSE 24
50V3.3
[40] JUP_L [26] SURTC
C2304 50V3.3
43 NC VOL2CAPB 23
[42] MUSIC.P_L [27] SRFIL
LOUT
44 D_PORTL_L IC2803 22
45 VREF C1AB00003093 VCC 21
D_PORT
2CH ELECTRONIC VOLUME SCL
46 20
SDA
47 D_PORT_R 19
NC GND
48 [14] BPF2 18
[50] MUSIC.P_R
49 NC [52] JUP_R [15] BPF3 ROUT 17
C2305 50V3.3
50 VOL2CAPA 16
51 NC 15
R2302
52 14
470K
1 2 3 4 5 6 7 8 9 10 11 12 13
C2306 C2307
0.068 0.068
R2303 R2305
R2304
22K 22K
10K
C2182
50V1
R2131
22K
C2129 R2133
R2137
50V1 22K
27K
C2135
R2127 47P
C2139
22K
10P
C2120
0.01
5 6 7 8
V+
R2132
22K
IC2121
C0ABBB000230
OP-AMP
R2123
12K
V-
4 3 2 1
R2125
18K
C2136
C2140
R2126 R2128
47P 10P
18K 22K
R2124
12K
C2130 R2134
R2138
50V1 22K 27K
R2143
0
TO MAIN
SECTION (5/6)
21 22 23
: AUX/MUSIC PORT/MIC AUDIO INPUT SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
CLIP_ATTN
C2311 R2311 C2315 R2321
10 470 1 10K
R2313
R2315
100K
15K
4 5 6
IC2804
Q2310
C0AABB000125
B1GFGCAA0001
OP-AMP
MUTING SWITCH
3 2 1
R2316
15K
ASP_CLK R2314
C2312 R2312 100K C2316 R2322
10 470 1 10K
ASP_DA
C3911 R3930
R3931 D3920
50V1 1K
820K B0EAMM000057
CLIP_S
D3922 C3912 C3910
D3921
470K 50V2.2 0.47
B0EAMM000057
D2503
R2503
R2501 B0ADCC000002
330K 3.9K
C2503
2
2.2
3
C2501 Q2501
1
1
B1ABCF000176
LEVEL METER
CONTROL SWITCH
R2502
R2504
R2505 C2505 C2507
82K
100
680 16V10 0.22
101
24 25 26
: AM/FM SIGNAL LINE : USB SIGNAL LINE
-9V
R2323 R2083
68K 8.2K
AUX_L
LOUT
R2081 C2081
6.8K 100P
C2321 C2341
47P 47P R2082 R2084
C2082
6.8K 8.2K
AUX_R 100P
4 3 2 1
V-
V+
5 6 7 8
+9V
C2322 C2342
47P 47P
ROUT
R2324
68K
FRONTL
FRONTR
R2531 C2561
100 10
SUBW
R2533
R2532
33K
100
R2534
33K
GND2
MUTE_S
R2509
100
MUTE_F
F_HOP
FAN
DC_DET1
MOD_DA
R2506
47K
R2508
1K
LM_1
R2510 C2509
56K 10V33
1/6 2/6 3/6
4/6 5/6 6/6
SA-AK980PU MAIN CIRCUIT
27 28
JK2801
1
C2095
1
[LCH]
2
C2083 AUX IN
1000P
C2096 C2084
1 1000P
[RCH]
3
C2091 C2092
1000P 0.1
4
CN5050
17
1 FRONT L
2 SIGNAL A_GND
3 FRONT R
4 AGND
5 SUBWOOFER
6 AGND
G
7 SURROUND L TO
8 AGND D-AMP CIRCUIT
9 SURROUND R
(CN5050)
10 AGND IN SCHEMATIC
11 CENTER
DIAGRAM - 12
12 MUTE S_C MODE 1
13 MUTE F_SW MODE 2
FHOP
14
15 FAN
16 DC_DET1
17 MOD_DA
1
TO MAIN
SECTION (3/6)
P1