D-Amp Circuit - Panasonic SA-AKX74PH Service Manual

16.8. D-Amp Circuit

1 2 3
SCHEMATIC DIAGRAM - 21
A
L D-AMP CIRCUIT
B
C
L5901
ZJ5901*
J0JKB0000020
M +35V_SENSE 6
TO
C5903
+35V_SENSE 5
0.1
SMPS CIRCUIT
SYS_GND 4
(CN5801)
C5904
SYS_GND 3
0.1
IN SCHEMATIC
-35V_SENSE 2
DIAGRAM - 22 L5902
-35V_SENSE 1
D J0JKB0000020
C5901
1000P
CN5902
1
SUBWOOFER 9
SIGNAL AGND 8
E B
TO AGND 7
MAIN(MICON)
MUTE_F 6
CIRCUIT (CN2011) FHOP 5
IN SCHEMATIC DC_DET 4
MOD_DA
DIAGRAM - 9 3
+5V 2
+5V GND 1
9
F
R5904
10K
G
NOTE: " * " REF IS FOR INDICATION ONLY
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
1 2 3 4 5 6
C5918 C5921 C5923 C5924
330P 0.1 0.1 33P
ZJ5900*
HEATSINK*
C5917
1000P
1 2 3
G1 G2
C5956
0
C5905 C5907 C5909
0.1 50V220 0.1
C5906 C5908 C5910
0.1 50V220 0.1
C5920
100V22
R5905
10
QR5901
B1GDCFJJ0047
+5V POWER SUPPLY
R5907
27K
R5901 R5906 R5909
120K 180K 33K
QR5900
B1GBCFJJ0051
Q5901
FREQUENCY HOPPING B1ABGC000005
R5910
SWITCH 1.5K
R5935
10K
R5913
2.7K
Q5902
B1ADCE000012
+5V VOLTAGE SUPPLY SWITCH
R5918
2.7K
Q5903
R5908
10K
B1ABCF000176
R5903
MODE SWITCH
10K
R5915
10K Q5905
B1ABCF000176
SWITCH
4 5 6
7 8 9
IC5900
C1BA00000497
AUDIO DIGITAL AMPLIFIER
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
C5928 C5933
0.015 0.015
C5938 C5939 C5943
0.1 0.1 330P
D4CC11040013
C5927 R5921 R5922 C5935
220P 10 10 220P
C5934
C5947
220P
1000P
C5929
220P
C5942 C5946
1000P 16V10
Q5907
B1ABCF000176
SPEAKER PROTECTION SWITCH
Q5906
B1ABCF000176
SPEAKER PROTECTION SWITCH
R5923
6.8K
7 8 9
103
10 11 12
TH5900
D5903
B0EAKM000117
D5904
B0EAKM000117
R5931 R5933
22 5.6K
C5948
C5950
0.68
0.1
3 4
C5949 C5951
0.68 0.1
1 2 R5934
R5932
5.6K
22
L5903
G0A150L00003
D5906
B0EAKM000117
D5905
B0EAKM000117
R5927
82K
R5928
82K
C5945
10V100
SA-AKX74PH/PN D-AMP
10 11 12
13 14
A
B
C
D
JK5901
G2
4 -
3 + TO SPEAKER
2 SWL- (SUBWOOFER)
1 SWL+
G1
E
F
G
CIRCUIT
H
13 14