Panasonic SA-AKX74PH Service Manual - Page 6
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58
59
60
SCHEMATIC DIAGRAM - 9
B
MAIN(MICON) CIRCUIT
C2109
50V1
IC2004
C0ABBB000067
DUAL OP-AMP
R2110
10M
C2111
0.01
SW_LV1
Q2004
B1GDCFJJ0047
BUFFER
TO MAIN(MICON)
CIRCUIT (4/10)
SW_MUTE
UP_DGND
Q2005
B1GDCFJJ0047
BUFFER
SW_LV2
P1
MI: MAIN(MICON): SCHEMATIC DIAGRAM - 5 ~ 14
DA: MAIN(D-AMP): SCHEMATIC DIAGRAM - 15 ~ 16
61
62
63
: +B SIGNAL LINE
: CD AUDIO INPUT SIGNAL LINE
: -B SIGNAL LINE
: AUX/TUNER/MUSIC PORT/MIC AUDIO INPUT SIGNAL LINE
CHANGE
(R2124)
R2124
27K
R2089
C2113
C2122
R2147
10K
100P
15K
10
15K
R2111
47K
C2125
C2131
R2151
R2167
5
6
7
8
1
0.01
18K
2.2K
V+
V-
R2145
10K
4
3
2
1
C2112
R2131
47P
1K
R2180
100K
R2119
10K
C2118
C2124
R2149
0.56
10
470
R2132
1K
Q2006
B1GDCFJJ0047
R2133
R2148
MUTING CONTROL
Q2008
0
1K
B1ABCF000176
MUTING
C2119
6.3V220
R2125
1K
64
65
66
: AUDIO OUTPUT SIGNAL LINE
: FM SIGNAL LINE
: AM SIGNAL LINE
: USB SIGNAL LINE
R2179
12K
Q2009
Q2010
B1ABCF000176
B1ABCF000176
SW LEVEL CONTROL
SW LEVEL CONTROL
AGND
MUTE_F
F_HOP
DC_DET_AMP
MODE_DA
PW_+5V
GND
TO MAIN(MICON)
CIRCUIT (10/10)
6
67
68
69
70
C2238
CN2011
2.2
9
1
SUBWOOFER
2
SIGNAL AGND
L
TO
3
AGND
D-AMP CIRCUIT
4
MUTE F
(CN5902)
5
FHOP
IN SCHEMATIC
6
DC_DET
7
MOD_DA
DIAGRAM - 21
8
+5V
9
+5V GND
1
1/10
2/10
3/10
4/10
5/10
SA-AKX74PH/PN
6/10
7/10
8/10
9/10
10/10
MAIN(MICON) CIRCUIT
A
B
C
D
E
F
G
H