Service manual
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GATE ARRAY(MPCA7)
FRD
FSCK
FSD
4-4C
4-4C
+5V
+5V
/TWAIT
7-6B
R229
10K
R227
100
R228
100
R226
100
C170
100P
+5V
RF
1
JF
2
PCUT
3
FCUT
4
VF
5
STAMP
6
SLF
7
SLRS
8
SLMTD
9
RES
10
TRG
11
TRG
12
INT0
13
INT1
14
HTS1
15
SCK1
16
STH1
17
RASVZ
18
N.U
19
VCC
20
VSS
21
INTMCR
22
VRESC
23
SLTMG
24
SLRST
25
AS
26
RD
27
WR
28
PHAI
29
SDT6
31
SDT5
32
VSS
33
SDT4
34
SDT3
35
SDT2
36
SDT1
37
D0
38
D1
39
D2
40
D3
41
VSS
42
D4
43
D5
44
D6
45
D7
46
RESET
48
SSPRQ
47
INT2
49
INT3
50
RXDI
51
TXDI
52
SCK1
53
IRQ0
54
A0
55
A1
56
A2
57
A3
58
A4
59
A5
60
EXINT0
120
EXINT1
119
EXINT2
118
EXINT3
117
WR0
116
RD0
115
RA15
114
RA16
113
VSS
112
RA17
111
RA18
110
EXWAIT
109
WAIT
108
MCR2
107
MCR1
106
DAX2
105
DAX1
104
RCRX
103
IRRX
102
VSS
101
VCC
100
UATX
99
UARX
98
UASCK
97
IRTX
96
RCO
95
RCVRDY2
94
PTMG
83
TRGI
82
A23
81
LCDC
80
A22
79
A21
78
A20
77
A19
76
A18
75
A17
74
A16
73
A15
72
A14
71
A13
70
A12
69
A11
68
A10
67
A9
66
A8
65
A7
64
A6
63
VCC
62
VSS
61
PRST
84
RCVRDY1
93
MA19
92
MA18
91
MA15
90
TEST
89
MD0
88
MD1
87
IPLON
86
INT4
85
SDT7
30
RASP
160
DOTEN
159
TWAIT
158
N.U
157
N.U
156
N.U
155
N.U
154
N.U
153
STH2
152
SCK2
151
HTS2
150
SLMTR
149
SLMTS
148
SLMTD
147
RJMTR
146
RAS3
145
NU
144
VSS
143
VCC
142
ASKRX
141
SYNC
140
DOT8
139
DOT9
138
RJMTD
137
RJMTS
136
DOT5
135
DOT6
134
D0T7
133
VSS
132
DOT1
131
DOT2
130
DOT3
129
DOT4
128
RJTMG
127
RJRST
126
RAS1
125
RAS2
124
ROS2
123
ROS1
122
OPTCS
121
IC10
G.A(MPCA7)
/RES
+5V +5V +5V +5V+5V
6-2C
C148
0.01u
(R204)
10K
R207
10K
R208
10K
R205
10K
R206
10K
VRESC
/AS
/RD
/WR
PHAI
D[0..7]
+5V
+5V
D0
D1
D2
HTS
/SCK
STH
/POFF
C149
330P
C150
330P
C151
330P
C152
330P
C153
330P
R210
10K
1-1A
8-4B
8-7A
8-4B
2-1D
2-1D
2-1D
2-1C
7-2C
R209
10K
+5V
+5V
+5V +5V +5V+5V
R225
10K
C166
1000P
C167
1000P
C168
1000P
R231
10K
R216
10K
R217
10K
R218
10K
R219
10K
+5V +5V +5V
RAS3
/ROS1
RAS2
RAS1
+5V +5V
/OPTCS
5-7C
5-5D
5-3D
7-7B
5-7B
4-4C
+5V
/TPRCRQ
R220
10K
R221
10K
R222
10K
R223
10K
R224
10K
R230
10K
/EXINT0
/RD0
/WR0
C161
330P
C162
330P
C163
330P
C164
330P
C165
330P
6-2C
6-2C
6-2C
/TRQ1
6-2C
C169
330P
/WAIT
+5V
+5V +5V +5V
C157
330P
C158
330P
C159
330P
C160
330P
2-6B
R213
10K
R215
10K
R214
10K
A[0..23]
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
5-6A
2-5C
2-1C
2-1C
2-1C
2-1C
NMI
/RESET
RXD2
TXD2
SCK2
/IRQ0
/SHEN
8-8B
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
+5V
+5V
/PRST
/PTMG
MA15
R211
10K
2-2A
2-2A
5-8B
/RDY
4-4C
R212
10K
C155
10u50V
C156
0.1u
C154
0.1u