Service manual
AR-203E/5420/M200/M201 ELECTRICAL SECTION 13 - 9
4. Circuit diagram
A. MCU PWB (AR-203E/5420)
(SIN2)
/STBY
/CS3#
DMT3
D2
ARB_INT
(SPPD)
/WDTOVF
D7
ONL
ARB_INT
/WDTOVF
/CS5
SCL
D6
/CS2#
DMT2
(SIN3)
SDA
D4
/SCANST
/SCANSP#
NMI
D2
D10
/STBY
/CS1#
D5
D3
/CS0#
/CS3#
DMT0
A20
D10
CCD_TG
SPFMT1
/RD#
D4
(FW)
D11
D8
(KEYIN1)
D8
/LWR#
D3
D0
/HWR#
D15
D5
/CS1#
/SCANST
POFF
/TRANSST D9
SPFMT3
/LWR#
D1
CPU_SYNC
/HWR#
D9
SPFMT2/MIRCNT D6
(SIN1)
D11
A12
CPU_SYNC
D13
/SCANSP#
/CS0#
/RD#
DMT1
/TRANSST
D1
MCNT
A8
CPUCLK(NC)
NMI
(FW)
D14
D12
D0
SPFMT0
D7
SPFMT1
SPFMT3
SPFMT0
SPFMT2/MIRCNT
/ESSRDY
RY/BY
CRUMSCL
/PRINTST
EXTAL
XTAL
(KEYIN2)
/PRINTST
TxD
SDA
RxD
SCL
POFF
/ES_PAGE
/MSU_ST1
MCNT
RY/BY
/ESSRDY
(KEYIN2)
TxD
RxD
CRUMSDTA
RESETOUT1
STROBE
STROBE
A0
A1
A2
A3
A4
A5
A6
A7
A9
A10
A11
A13
A14
A15
A16
A17
A18
A19
(PSW)
D12
D13
D14
D15
/CS5
CRUMSDTA
CRUMSCL
RESETOUT1
MMCLK
DMT3
DMT2
DMT1
DMT0
XTAL
EXTAL
CPUCLK(NC)
/ES_PAGE
/MSU_ST1
PSL
/CS2#
CCD_TG
VCC3
CPU3.3
VCC3
CPU3.3
VCC3 VCC3
VCC3
RTH(5)
(SIN2)(4)
SELIN1(4)
(SIN3)(4)
SPFMT1(4)
DMT0 (6)
(SIN1)(4)
/CS1(3)
CCD_TG (2,4)
DMT3 (6)
/CS0(3)
D_CONT (4)
DMT2 (6)/LWR(2)
D[15..0] (2,3)
SPFMT3(4)
A[20..0] (2,3)
/RESET0 (2,3,4)
STROBE (4)
/TRANSST(2)
CPU_SYNC (2)
(SPPD) (7)
/RD(2,3)
/SCANSP(2)
ARB_INT (2)
/RESET1
(2,4)
(FW) (4)
SELIN3(4)
SPFMT0(4)
/SCANST(2)
DMT1 (6)
/CS2(2)
PMCLK(5)
(PSW) (7)
/HWR(3)
SPFMT2/MIRCNT(4)
/ASIC_RST (2,4,12)
SELIN2(4)
MMCLK (5)
/PRINTST(2)
POFF (2,5)
TxD (9)
SDA (3)
RxD (9)
SCL (3)
(USB_IN) (4)
(KEYIN2)(4)
(TCS_AN)(5)
(KEYIN1)(4)
RY/BY(3)
ONL(8)
CRUMSDTA (12)
CRUMSCL (12)
PSL(8)
mt_at_home# (4)
MCNT (5)
Reset Circuit
R8(*4)
680J
When IC1 is,
*R3,R4,C1, and C5 are temtative
R7(*3)
15pF
OPEN
15pF
R4(*1)
27pF
0JOPEN
27pF
C1(*6)
C5(*5)
OPEN0J
R3(*2)
NOT mounted
OPEN
mounted
22J
ASIC_RESET
Spreading Range : +/- 1.2%
TP226
TP139TP162
TP180
TP253
C20 0.1u
TP201
C25 0.1u
BR8
10kJx4
1
2
3
4
8
7
6
5
TP167
R261 10kJ
TP10
TP222
TP150
TP172
TP242
BR22
33Jx4
1
2
3
4
8
7
6
5
TP185
TP227
BR10
10kJx4
1
2
3
4
8
7
6
5
TP181
TP254
R4 *1
TP140TP163
TP202
C26
47p
TP6
TP168
BR23
33Jx4
1
2
3
4
8
7
6
5
TP24
BR3
10kJx4
1
2
3
4
8
7
6
5
IC2
H8S/2321
HD6412321VF25(H8S/2321)
P35/SCK1
64
P34/SCK0
63
P33/RxD1
62
P32/RxD0
61
P31/TxD1
60
P30/TxD0
59
VCC
58
PD7/D15
57
PD6/D14
56
PD5/D13
55
PD4/D12
54
Vss
53
PD3/D11
52
PD2/D10
51
PD1/D9
50
PD0/D8
49
PE7/D7
48
PE6/D6
47
PE5/D5
46
PE4/D4
45
Vss
44
PE3/D3
43
PE2/D2
42
PE1/D1
41
PE0/D0
40
VCC
39
AVcc
103
Vref
104
P40/AN0
105
P41/AN1
106
P42/AN2
107
P43/AN3
108
P44/AN4
109
P45/AN5
110
P46/AN6/DA0
111
P47/AN7/DA1
112
AVss
113
Vss
114
P17/PO15/TIOCB2/TCLKD
115
P16/PO14/TIOCA2
116
P15/PO13/TIOCB1/TCLKC
117
P14/PO12/TIOCA1
118
P13/PO11/TIOCD0/TCLKB
119
P12/PO10/TIOCC0/TCLKA
120
P11/PO9/TIOCB0/DACK1
121
P10/PO8/TIOCA0/DACK0
122
MD0
123
MD1
124
MD2
125
PG0/CAS
126
PG1/CS3
127
PG2/CS2
128
PG3/CS1
1
PG4/CS0
2
Vss
3
NC
4
VCC
5
PC0/A0
6
PC1/A1
7
PC2/A2
8
PC3/A3
9
Vss
10
PC4/A4
11
PC5/A5
12
PC6/A6
13
PC7/A7
14
PB0/A8
15
PB1/A9
16
PB2/A10
17
PB3/A11
18
Vss
19
PB4/A12
20
PB5/A13
21
PB6/A14
22
PB7/A15
23
PA0/A16
24
PA1/A17
25
PA2/A18
26
PA3/A19
27
Vss
28
PA4/A20/IRQ4
29
PA5/A21/IRQ5
30
PA6/A22/IRQ6
31
PA7/A23/IRQ7
32
P67/CS7/IRQ3
33
P66/CS6/IRQ2
34
Vss
35
Vss
36
P65/IRQ1
37
P64/IRQ0
38
P53/ADTRG
102
P52/SCK2
101
Vss
100
Vss
99
P51/RxD2
98
P50/TxD2
97
PF0/BREQ
96
PF1/BACK
95
PF2/LCAS/ WAIT/BREQO
94
PF3/LWR
93
PF4/HWR
92
PF5/RD
91
PF6/AS
90
VCC
89
PF7/0
88
Vss
87
EXTAL
86
XTAL
85
VCC
84
STBY
83
NMI
82
RES
81
WDTOVF
80
P20/PO0/TIOCA3
79
P21/PO1/YICOB3
78
P22/PO2/TIOCC3
77
P23/PO3/TIOCD3
76
P24/PO4/TIOCA4
75
P25/PO5/TIOCB4
74
P26/PO6/TIOCA5
73
P27/PO7/TIOCB5
72
P63/TEND1
71
P62/DREQ1
70
P61/TEND0/CS5
69
Vss
68
Vss
67
P60/DREQ0/CS4
66
Vss
65
TP173
TP245
TP243
TP151
TP261
TP228
R252 2kJ
TP186
TP141
BR24
33Jx4
1
2
3
4
8
7
6
5
TP182
TP203
BR6
10kJx4
1
2
3
4
8
7
6
5
TP131
TP154
TP195
TP8
C2
0.1u
TP169
TP25
C16
0.1u
R17 10kJ
BR25
33Jx4
1
2
3
4
8
7
6
5
TP244
TP152
TP174
TP246
R12 33J
TP142
R262 10kJ
C4
100p
TP210
TP187
TP229
TP183
TP155
TP255
TP204
TP132
TP196
R8 *4
BR26
33Jx4
1
2
3
4
8
7
6
5
TP170
R250 10kJ
BR11
10kJx4
1
2
3
4
8
7
6
5
R13 33J
R2
N.M.
TP258
TP175
TP247
R248 10kJ
TP153
C12
22pF
TP211
BR17
33Jx4
1
2
3
4
8
7
6
5
TP235
TP143
C14
N.M.
TP230
TP188
BR7
10kJx4
1
2
3
4
8
7
6
5
TP184
TP256
C13
N.M.
TP205
TP133TP156
C6
12p
TP197
C15
N.M.
IC3
BU4212F
GND
1
VDD
2
CT
3
VOUT
4
R16
33J
BR18
33Jx4
1
2
3
4
8
7
6
5
R263 10kJ
R22
10kJ
BR15
10kJx4
1
2
3
4
8
7
6
5
R14 33J
TP259
R246
10kJ
TP1
TP126
R1
N.M.
TP176
TP248
TP236
TP144
TP212
TP189
R21 33J
TP231
BR19
33Jx4
1
2
3
4
8
7
6
5
TP262
X1
HC-49U/S
19.6608MHz
BR12
10kJx4
1
2
3
4
8
7
6
5
TP134TP157
TP257
TP206
TP198
C21 0.1u
TP193
TP30
TP7
BR20
33Jx4
1
2
3
4
8
7
6
5
TP260
R19
10kJ
C22 0.1u
TP177
TP2
TP127
TP267
TP145
R3
*2
TP213
TP237
R5
N.M.
TP190
TP232
R9 33J
BR21
33Jx4
1
2
3
4
8
7
6
5
TP263
TP207
C23 0.1u
TP135TP158
TP199
R421 10kJ
C7 33p
C10
1uF
TP194
TP31
C78
100p
R245 10kJ(open)
C24 0.1u
C17
0.01uF
TP218
TP128
+
C19
10u/16V
TP250
TP238
TP146
TP214
TP191
TP233
TP223
TP208
TP136TP159
R6
0J
R7 *3
C8 33p
C5 *5
C3
100p
BR1
10kJx4
1
2
3
4
8
7
6
5
R251 2kJ
C9 33p
TP164
TP32
TP219
L11 0J (1608)
TP251
TP129
TP239
TP147
TP215
TP192
TP234
TP224
BR14
10kJx4
1
2
3
4
8
7
6
5
TP160
TP178
TP249
TP209
TP137
R20
100kJ
R249 N.M._10kJ
TP165
TP33
R11 100J
L1
ZJSR5101-223(open)
TP220
TP130
TP216
TP240
TP148
BR16
10kJx4
1
2
3
4
8
7
6
5
TP225
R18
33J
TP252
TP138TP161
TP179
IC1
CY25811SC
XIN/CLKIN
1
XOUT
8
VDD
7
VSS
2
SSCLK
5
FRSEL
6
S0
4
S1
3
TP200
BR2
10kJx4
1
2
3
4
8
7
6
5
R247 10kJ
TP166
C18
N.M.
TP125
C1
*6
TP9
TP221
R10 33J
TP241
TP149
TP217
BR5
10kJx4
1
2
3
4
8
7
6
5
TP171
C11
N.M.
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
MCU PWB (CPU section) (AR-203E/5420) 1/12