Panasonic SA-AKX72PH Service Manual page 105

SCHEMATIC DIAGRAM - 9
B MAIN CIRCUIT
: +B SIGNAL LINE
DC16V
R2379
680
R2380
0
FAN_OUT
C2251
GND
DC_DET_AMP
M+12V
D2016 D2019
B0EAKM000117 B0EAKM000117
+9V
P1
K2001...AKX72
0
K2006...PH
0
K2007...PN
0
TO MAIN
CIRCUIT (6/8)
29 30 31 32
: -B SIGNAL LINE : CD/DVD AUDIO INPUT SIGNAL LINE : AUX/MIC/TUNER/MUSIC PORT AUDIO INPUT SIGNAL LINE
Q2033
B1AAJC000019
POWER SUPPLY
IC2012
R2393
C0ABBB000230
270K
R2386 OP-AMP
33K
1 A OUT V+ 8
2 A-IN B OUT 7
C2196
6.3V100
3 A+IN B-IN 6
4 GND B+IN 5
R2381
10 12K
R2390
82K
D2021
B0EAKM000117 R2384
270K
C2252
6.3V100
R2383
82K
33 34 35
: AUDIO OUTPUT SIGNAL LINE
TO MAIN
CIRCUIT (3/8)
R2281
6.8K
Q2031
R2397
B1ABCF000176
470K
DC DETECT
C2255 R2396
Q2024
1 100
B1ABCF000176
Q2025
FAN DRIVE
B1ABCF000176
FAN DRIVE
D2032 C2256
R2395
B0ACCK000012 6.3V220
100K
C2040 R2394
10 220
R2385
470K
R2387 B1ABCF000176
6.8K
C2254 R2378
Q2021
Q2002
1 100
B1ABCF000176
B1ABCF000176
FAN DRIVE
FAN DRIVE
D2009 R2389
B0ACCK000012 100K
C2042
R2388
10 220
TU_INT
TU_RST
TU_CLK
TU_SDA
CD_3.3V
LB2010 0
TUNER_R R2003 3.9K
C2022 R2007 C2015
1000P 3.3K 220P
C2023 R2008 C2016
1000P 3.3K 220P
TUNER_L
R2004
3.9K
36 37 38
105
CN2005
2 POSITIVE
TO FAN UNIT
1 NEGATIVE
C2257 R2392
0.01 27
TO MAIN
CIRCUIT (8/8)
CN2006
2 POSITIVE
TO FAN UNIT
1 NEGATIVE
Q2003
DC DETECT
C2253 C2258 R2382
6.3V220 0.01 27
CN2010
9
1 TU_INT
2 TU_RST
G
3 TU_CLK
TO
4 TU_SDA
TUNER CIRCUIT
5 3.3V
(CN51)
6 R OUT
IN SCHEMATIC
7 GND
DIAGRAM - 14
C2008
8 L OUT
1
9 GND
1
1/8 2/8 3/8 4/8
5/8 6/8 7/8 8/8
SA-AKX72PH/PN MAIN
39 40 41
P1
CIRCUIT
42