Technics SX-PC25 - Page 33

SCHEMATIC DIAGRAM-3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
P55 P56 P57 MNI P60 P61 P62 P63 P64 P65 P70 P71 VSS P72 P73 P74 P75 P76 P77 CLK AM8/16 X1 X2 EA
P40 P35 P34 P33 P32 P31 P30
VCC
P27 P26 P25 P24 P23 P22 P21 P20 P17 P16 P15 P14 P13 P12 P11 P10
VCC
TEST2
TEST1
P67
P66
RESET
P83
P82
P81
P80
ALE
VSS
P87
P86
P85
P84
AVCC
P50
P51
P52
P53
P54
P45
P46
P47
VREFH
VREFL
AVSS
P41
P42
P43
P44
IC2
T93CU44F1B
C42
A
0.1P
R38
PMUT
+5D
X1
20MHz
R40
RST
100
R42
0
R33
10K
1M
R1
0
R31
100
R24
100K
R20
10K
R15
SNS
100K
R16
1K
C24
0.001
C21
0.1P
D11
MA111
R21
2.2K
R18
1K
D12
MA8030L
Q2
2SB709
Q3
2SD601
D14
MA111
HVOL
C31
0.001
C25
0.1P
C29
0.1P
(MAIN CPU)
+5D
C28
0.1P
B
C
A
B
C
D
E
F
G
H
I
JKLMNOPAABC BCD
AB
L1
130uHx3
C7
0.1P
D9
MA111
R5
220
C19
+5D
0.1P
R14 1K
R17
220
C22
100P
VOUT
VE
VCC
NC NC
GND
87
6
5
1234
JK3
MIDI IN
IC1
QCPL-260L
(PHOTO COUPLER)
0
R37
+5D
SNS
+5D
SNS 1
RESET 2
9