Panasonic SA-AK180PN Service Manual page 76

SCHEMATIC DIAGRAM - 4
I
B B MAIN CIRCUIT
: +B SIGNAL LINE
J
TUNER_L
C2025
CD/USB_L
C2045
K
PA_IN_L
R2061 470 C2065
AUX_L
C2085
PA_IN_GND
AUX_R
C2086
L
PA_IN_R
R2062 470 C2066
CD/USB_R
C2046
TUNER_R
C2026
M
N
O
P
1 2 3
: -B SIGNAL LINE : CD AUDIO INPUT SIGNAL LINE
1
1
39 38 37 36 35 34 33 32 31 30 29 28 27
1
40
MP_L 26
41 25
1
42 AUX_L
24
43 23
C2170
44 I_PORTL LOUT 22
10V33
IC2803
45 VCC 21
C1AB00003093
46 SCL 20
AUDIO SIGNAL PROCESSOR
47 I_PORTR 19
SDA
18
48 GND
49 ROUT 17
1
50 AUX_R 16
51 15
1
52 MP_R 14
1 2 3 4 5 6 7 8 9 10 11 12 13
1
1
R2303
18K
4 5 6
: AUX/M.PORT INPUT AUDIO SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
TO MAIN
SECTION (1/4)
MUTE_DA
C2311 R2311
10 470
LOUT MUTE_F
C2301 0.68 Q2311
R2315 B1GFGCAA0001
10K
MUTING
C2302 50V1
C2303
3 4
50V2.2
R2301 4.7K R2316
10K
C2304 50V3.3
2 5
1 6
ROUT
DC-DC_GND
C2305 50V3.3 C2312 R2312
10 470
ASP_CLK
USB+5V
R2302
470K ASP_DA
PCONT
+9VASP
R2305
10K
A_GND
7 8 9
76
: USB SIGNAL LINE : FM/AM SIGNAL LINE
Q3001
B1GFGCAA0001
4 5 6
MUTING CONTROL
3 2 1
1 2 3
1 2 3
Q3000
B1GFGCAA0001
B1GFGCAA0001
MUTING CONTROL
MUTING CONTROL 6 5 4
6 5 4
1/4 2/4
3/4 4/4
SA-AK180PN/PU MAIN
10 11 12 13
P1
1
TO MAIN
SECTION (4/4)
Q3002
CIRCUIT
14