SPHINX
Project Two Mk2 Service Manual
21
Project 2 display
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
U3
H8/325 HD6413258CP10
U4
8,00000MHz
C7
33p
C5
33p
2
1
S2
2
1
S4
2
1
S3
V+
2
D
1
GND
3
IR
IR1
R1
5R62
R2
61K9
Standby
Tape-m
M ute
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CN1
18PIN
+
C1
C47U/16V
LD3
LD4
LD5
LD6
LD7
CD
TUNER
LINE1
LINE2
LINE3
R8
390R
R3
390R
TA
PE-M
S1
Input-selector
LD8
LD2
CD-S
STB
R10
390R
VOUT
1
PFI
4
PFO
5
WDI
6
RES
7
VBAT
8
U5
MAX690
C3
100NMKT
+
C2
C25V/470U
C4
100NMKT
R6
10K
R5
39K2
Vin
1
GND
2
+5V
3
U1
MC7805
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
RL2
OPTO
RL8
RL3
RL4
RL5
RL6
M2
RL7
M1
RL1
RL2
RL8
RL3
RL4
RL5
RL6
RL7
RL1
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
C6
100NMKT
LD9
R11
390R
R9
10K
GND
GND
GND
GND
GND
+24
T8
T2SA970
GND
+24
VCC
VCC
VCC
VCC
VCC
R
G
LD1
T1
T2SC2240
T2
T2SA970
R4
10K
GND
T5 T2SC2240
T7
T2SC2240
T4 T2SA970
T6
T2SA970
VCC
GND
M1
M2
T3
T2SC2240
R7
10K
GND
GND
OPTO
+24
P30
P31
P32
P33
P34
P35
P36
P37
P35
P34
P31
P32
P33
P30
P36
M
M
MUTE
STANDBY
PCB 02601B-AS-SISW
1
PFI
PFI
C9
100NMKT
C8
100NMKT
