D-Amp Circuit - Panasonic SA-AKX72PH Service Manual

17.8. D-Amp Circuit

1 2 3
SCHEMATIC DIAGRAM - 19
A
I D-AMP CIRCUIT
B
IC5500
C0JBAB000902
R5510
1K
HEX INVERTER
D5502
C5550
0.01 B0ACCK000012
C
1 1A VCC
14
C5556
0.01
2 1Y 6A
D5501 13
B0ACCK000012 C5557
100P
3
2A 6Y 12
X5501 C5551 R5515
H2A7003A0011 390P 0
4 5A
2Y 11
C5553
R5513
100P
5 3A 5Y 10
X5500
H2A6023A0011
6 3Y 4A 9
C5552 R5505
R5512
D
390P 100
7 GND 8
4Y
E
F
K5256...AKX72
0
G
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
FHOP
VDD
IN_SW(1/2)
K5502
0
IN_SW
100
0
OSC
Q5603
B1ADCE000012
R5611
SWITCH
1.2K
Q5604
R5602
B1ABCF000176
10K
MOD_DA
SWITCH
Q5601
B1ABCF000176
MUTE_F
SWITCH
R5609
10K
4 5 6
7 8 9
MODE1_2
MODE1
R5111 100K
MODE2
R5113 150K
R5020 100K
R5019 150K
Q5102
B1ABCF000176
DC DETECT
Q5101
R5318 120K
B1ABCF000176
R5328 100K
DC DETECT
AGND
7 8 9
115
10 11 12
FR(L)-
FR(L)+
FR(H)-
FR(H)+
FL(L)-
FL(L)+
FL(H)-
FL(H)+
SW-
SW+
MODE2
C5331 C5601
1000P 16V10
FRH_+
FRL_-
FLH_+
FLL_-
SW_+
SW_-
R5671
0
1/2 2/2
SA-AKX72PH/PN D-AMP CIRCUIT
10 11 12
13 14
JK5001
1 FRONT R (LOW) -
2 FRONT R (LOW) +
3 FRONT R (HIGH) -
4 FRONT R (HIGH) +
FRONT L (LOW) -
5
TO SPEAKERS
6 FRONT L (LOW) +
7 FRONT L (HIGH) -
8 FRONT L (HIGH) +
9 SUBWOOFER -
SUBWOOFER +
10
TO D-AMP
CIRCUIT (2/2)
3
1
P1
3 2 1
ZJ5410
4
13 14