Service manual

7. PARTS SPECIFICATIONS
7-1. Main Circuit Board
IC1 Custom Chip
GG QFP 144P
•Top View
108
109
114
• Description
No.
I
Pin Name
No.
I
Von
37
2
AO
38
3 AI
39
4
A2 40
5 A3 41
6
A4
42
7
AS 43
8 A6 44
9 A7
4S
10 A8
46
11 A9 47
12 AlO 48
13 All 49
14 Al2
50
15 A13 51
16
A14
52
17
A15
53
18
GND 54
19
DO 55
20 01 56
21 02
57
22 03
58
23
04 59
24
OS 60
25
D6
61
26
D7 62
27
MRQ 63
28 EXMl 64
29 EXM2 65
30
VCK
66
31
CCK
67
32 NPS 68
33
NTR
69
34
NTL
70
35 NMI 71
36
-
Von
72
73
1 72
37
38
Pin Name
GND
NGG
NTV
NLCD
A
TPR2
TPRI
CLA3
CB3
CA2
CB2
CAl
CBl
OW
D03
DOl
·-
004
D02
CL2
PI
P4
P2
P3
DB
ADO
AD1
AD2
AD3
AD4
ADS
AD6
AD7
ADS
AD9
GND
GND
- 19-
No.
Pin Name No.
Pin Name
73
Von
109
GND
74
A010 110
CSYN
7S
ADll Ill
NUP
76
AD12
112
NOW
77
AD13 ll3 NLE
78
AD14 114
NRI
79
NWE liS
TST2
80
NOE 116 TSTl
81
NCE ll7
TSTO
82
GND(A) 118 NTSC
83
VONF ll9
SEC
84
VRES 120
PC6
8S VREF
121
PCS
86
SNDR 122 PC4
87
SNDL 123 PC3
88
SNDl 124
PC2
89
SND2 125
PC1
90
SND3 126
PCO
91
SNDN 127
CRAM
92
Vo
0
(A)
128
IRQ
93
GND(A)
129 NWR
94
SOlO
130 NRD
9S
SD20
131 RST
96
SD30 132
488
97
SD40 133
HBK
98
Voo(A)
134
VBK
99 SAMP
135
CPO
100 SPON 136
Von
101 HSYN 137
XTL2
102 VSYN 138
XTLl
103
INT
139 GND
104 NMI 140
NLED
105
WAIT 141
RSH
106
NBRQ
142
NJAP
107 NBAK 143 GND
108
Von
144
GND