Panasonic SA-AK631GCP Service Manual page 68

SA-AK631GCP
SCHEMATIC DIAGRAM - 7
MAIN CIRCUIT
MCLK
RESTSW
CHG_HLF
CHG_CW
CHG_CCW
CHG_SW1
CHG_SW2
CHG_PLR
CHG_AD2 R2856 100
CHG_AD1
R2857 100
DECK2
100
KEY3 R2858
100
R2859
KEY2
100
R2860
KEY1
PHOTO_2
R2861
100
R2862
PHOTO_1
100
VREF+
VCC
R2867
100K
C2831 0.022
C2832 330P
R2876
R2877
C2833
330P
: +B SIGNAL LINE
80 76
79 78 77 75 74
81 MCLK
/RESTSW
82
83 CHG_HLF
CHG_CW
84
85 CHG_CCW
CHG_SW1
86
87 CHG_SW2
88 CHG_PLR
89 CHG_AD2
CHG_AD1
90
91 DECK2
92 KEY3
KEY2
93
94 KEY1
PHOTO_2
95
96 AVSS
97 PHOTO_1
VREF
98
AVCC
99
100 DEMO SELECTOR
1
2 3 4 5 6 7
R2801
C2821 100P
10K
C2820 100P
C2819 100P
C2818 100P
22K
22K
4 3 2 1
IC2802
C3EBDG000052
E-EPROM IC
(NOT SUPPLIED)
6 8
5 7
R2878
4.7K
72 71 70 69 68 66 65 64 63 62 61 60 59 58
73 67
IC2801
C2CBJG000561
MICROPROCESSOR
18 21 22 23
8 9 10 11 12 13 14 15 16 17 19 20
R2881
220
R2886
1M
R2883
330K
IN
C2840
R2882
18P
10M X2801
GND
H0A327200073
C2841
18P
68
57 56 55 54 53 52 51
R2827
10K
NC 50
49
NC
48
NC
47
DCDET
46
PCONT/EFP_/CE
45
NC
44
NC
43
EE_DAT
EE_CLK 42
41
EE_CS/EFP_/EPM
MUTE_A
40
MUTE_H 39
38
REG1
37
REG2
REG3 36
REG4 35
REG5 34
REG6 33
REG7 32
REG8 31
24 25 26 28 29 30
27
R2804 47K
R2805 47K
R2807 10K
R2806 10K
C2851
0.1
R2891 47K
R2810 22K
C2853
C2852
16V100 0.1
Q2806
C2857
50V2.2
C2856
1
OUT
D2804
B0ACCK000005
X2802
H2B100500004
VREF+
R2830 R2831
10K
100K
R2834
1K
DCDET
PCONT
EE_DAT
EE_CLK
EE_CS
MUTE_A
MUTE_H
BUSY
CLK
RXD
TXD
VREF+
SW5V
D2802
B0ADCJ000020
SYS6V
R2892
0
R2811
0
C2854
16V100
VREF+
Q2806
B1GBCFJJ0051
POWER RESET
CONTROL SWITCH