SPHINX
Project Ten Service Manual
22
Project 10 control
Xtal
10
EXtal
11
MD1
12
MD0
13
NMI
14
VCC
15
STBY
16
GND
17
P40
19
P41
20
P42
21
P43
22
P44
23
P45
24
P46
25
P47
26
nc
18
P50
27
P51
28
P52
29
P53
30
P54
31
P55
32
P70
33
P71
34
nc
35
P72
36
P73
37
P74
38
P75/WR
39
P76/RD
40
P77
41
VCC
42
P27
43
RES
9
P66
8
P65
7
P64
6
P63
5
P62
4
P61
3
P60
2
nc
1
P30
61
P31
62
P32
63
P33
64
P34
65
P35
66
P36
67
P37
68
P26
44
P25
45
P24
46
P23
47
P22
48
P21
49
P20
50
nc
51
GND
52
P17
53
P16
54
P15
55
P14
56
P13
57
P12
58
P11
59
P10
60
H8
U1
H8/325
C1
33p
C2
33p
C3
100n
GND
+5V
+5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CN1
LINE2
VOL1
LINE1
VOL2
TUNER
+5V
CD
+5V
TAPE-MON
STANDBY
GND
GND
GND
+12V-SW
T-SENSOR
+12V LED
+12V LED
MUTE
IN1
1
IN2
2
IN3
3
IN4
4
IN5
5
IN6
6
IN7
7
IN8
8
GND
9
OUT8
11
OUT7
12
OUT6
13
OUT5
14
OUT4
15
OUT3
16
OUT2
17
OUT1
18
K
10
U2
ULN2804
GND
LD3
LD7
LD2
LD4
LD6
LD5
LD1
R2
475R
R3
475R
R4
1K50
R5
475R
R6
1K50
+12V
2
1
S1
standby
2
1
S2
mute
2
1
S3
cd
2
1
S4
tuner
2
1
S5
line1
2
1
S6
line2
2
1
S7
tape-mon
V+
2
D
1
GND
3
IR
IR1
SFH506-38
R7
10R0
R8
47K5
+
C4
47u
+5V
T2
C2240
T3
C2240
T4
A970
T5
A970
GND
+5V
+
U3
TL7757
X1
8MHz
R1
10R0
R9
10R0
C6
100N
GND
R10
100K
J1
JUMPER
CLOSED
OPEN
SERVICE
NORMAL JUMPER SETTINGS
PJ10
+
C5
100u
GND
+5V
+5V
GND
+12V
VOL2
VOL1
L2
VOL1
L1
VOL2
TU
CD
TM
STB
TS
MU
MU
+5V
GND
+5V
MU
TM
CD
TU
L1
L2
to main board
J1
JUMPER
25V
standby
12V-SW
GND
STB
