Panasonic SA-AK78 Service Manual page 40

SA-AK78
SCHEMATIC DIAGRAM-14
:POSITIVE VOLTAGE LINE
I H C
C812
470P
R810
56
R803 270K
R831
47
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:NEGATIVE VOLTAGE LINE
R840
10K
R827
4.7K
R833
4.7K
80 79 78
NC
81
C810
82 TST0
L805
2200P
TST1
83
84 TST2
TST3
85
5V
86 VDM
C814 6.3V47 2.5V
VRM1
87
2.5V
88 M IN
2.5V
M OUT
89
C813 6.3V47 4.2V
90 VRM2
GNDM
91
C811 560P
92 VSAL
2.4V
L IN
93
2.5V
94 AVRL
5V
VDL
95
R804 47K 5V
96 VDR
2.5V
AVRR
97
2.4V
98 R IN
C840
VSAR
99
330P
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
X801
R832
(33.8MHz)
220
R816
1M
L809
5V
L807
10 H
:SUB WOOFER/FRONT LOW SP DRIVE SIGNAL LINE
:CD SIGNAL LINE :SURROUND/HIGHT SP DRIVE SIGNAL LINE
A B G F E D C
77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60
IC801
TC9496F-012A
DIGITAL SOUND
CONTROLLER
C822 C834
2200P 2200P
G H I
40
R841
330
R811
100K
C893
0.022
5V
59 58 57 56 55 54 53 52 51
CKO1
50
2.5V
CKO0 49
2.5V
FS
48
TP12 47
TP11
46
TP10 45
TP9
44
TP8 43
TP7
42
TP6 41
TP5
40
GND R 39
5V
V R
DD 38
V 37
DD
TP4
36
TP3 35
TP2
34
TP1 33
TP0
32
NC 31
Q204
IMX9T110
ATTENUATOR
0V 0.6V
5
1
C829 C830
3 2
2200P 2200P 0.6V
R823 C239
1.2K 16V10
L810
10 H
5V
5.1V
3.3V
7.7V
-7.7V
14.2V
14.8V
A
B
C
D
C847
0.022
C848
1
6
4
0V
J K