Schematic Diagram-15 - Panasonic SA-AK78 Service Manual

SCHEMATIC DIAGRAM-15

K
MAIN CIRCUIT
5V
B A D
C860
2200P
C862 C864
470P
C863
R860
56
C861
R853 270K
R854
K
J
L804
:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
L M
R890
10K
R828
4.7K
R883
4.7K
80 79 78 77 76 75
NC
81
TST0
82
TST1
83
TST2
84
TST3
85
5V
VDM
86
6.3V47 2.5V
VRM1
87
2.5V
M IN
88
2.5V
89 M OUT
6.3V47 4.2V
90 VRM2
91 GNDM
560P
92 VSAL
2.4V
93 L IN
2.5V
94 AVRL
5V
95 VDL
47K 5V
96 VDR
2.5V
97 AVRR
2.4V
98 R IN
99 VSAR
100 GNDX
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
R259 C867 R867
10K 50V1 560
C891
0.01
R260 C868 R868
10K 50V1 560
L811
5V
:SUB WOOFER/FRONT LOW SP DRIVE SIGNAL LINE
:CD SIGNAL LINE :SURROUND/HIGHT SP DRIVE SIGNAL LINE
K J I H N
R861
100K
B A C D
C895
0.022
74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58
IC802
TC9496F-013A
DIGITAL SOUND
CONTROLLER
C884 C877
2200P 0.01
C878
0.01
C888
6.3V47
R862
390
41
L806
57 56 55 54 53 52 51
CKO1
50
CKO0
49
FS
48
TP12
47
TP11
46
TP10
45
TP9
44
TP8
43
TP7 42
TP6 41
TP5 40
GND R 39
5V
V R 38
DD
5V
V 37
DD
TP4 36
TP3 35
TP2 34
TP1 33
TP0 32
NC 31
Q801
IMX9T110
ATTENUATOR
0.6V
1 5
0V
3 2 4
0.6V
R878
15K
C879 C880 R870 C876 C826
2200P 2200P 1K 16V10 50V1
R869 C875 C825
1K 16V10 50V1
Q802
2SD2114K1V
ATTENUATOR R865
2.2K
0.6V
0V
5V
5.1V
3.3V
7.7V
-7.7V
14.2V
14.8V
SA-AK78
6
0V
R877
15K
R848
2.7K
R847
2.7K