Sharp ER-A470 (serv.man2) Service Manual ▷ View online
2) Block diagram
Fig. 2-2
P47
FTI2
P45
FTI1
P43
P42
P41/TMCI
P40
P37
P36
P35
P34
P33
BREQ
BACK
WAIT
P27/A23
P26/A22
P25/A21
P24/A20
P23/A19
P22/A18
P21/A17
P20/A16
A15
A14
A13
A14
A13
A12
A11
A10
A11
A10
A9
A8
A7
A6
A5
A8
A7
A6
A5
A4
A3
A3
A2
A1
A0
A0
VCC
VCC
VCC
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
AVCC
AVSS
MD2
MD1
MD0
RES
STBY
NMI
AS
RD
HWR
LWR
RFSH
EXTAL
XTAL
E
D7
D6
D5
D4
D3
D2
D1
D0
D1
5
D1
4
D1
3
D1
2
D1
1
D1
0
D9
D8
STO
P
/P
5
7
P5
6
FM
R
S
P5
4
P5
3
P5
2
P5
1
P5
0
P6
7
P6
6
RS
/P
6
5
RR/
P
6
4
CD/
P
6
3
CS
/P
6
2
DR/
P
6
1
ER
/P6
0
P7
3
AN
2
AN
1
AN
0
TXD
2
RX
D
2
TXD
1
RX
D
1
SC
K2
IRQ
2
IRQ
1
IRQ
0
H8/500 CPU
DTC
Serial
communication
interface x 2ch
communication
interface x 2ch
8bit timer
16bit free running
timer x 2ch
timer x 2ch
Refresh controller
Wait state
controller
controller
A/D convertor
Interruption controller
Clock
oscillator
oscillator
Watch
dog timer
dog timer
Data bus
Port 1
D
a
ta bu
s (L
ow
er)
D
a
ta bu
s (U
pp
er)
A
d
dr
es
s
bus
Po
rt
2
Po
rt
3
Po
rt
4
Port 5
Port 6
Port 7
Port 8
A
ddr
es
s
bus
X
– 12 –
3) Pin description
Pin
No.
Symbol
Signal
name
In/
Out
Function
1
RES
RESET
I/O
Reset input
2
NMi
NMi
In
Non-maskable interrupt input
for SSP interrupt input.
for SSP interrupt input.
3
VSS
NU
In
GND
4
D0
Nu
In
GND
5
D1
Nu
In
GND
6
D2
Nu
In
GND
7
D3
Nu
In
GND
8
D4
Nu
In
GND
9
D5
Nu
In
GND
10
D6
Nu
In
GND
11
D7
Nu
In
GND
12
D8
D0
I/O
Data bus
13
D9
D1
I/O
Data bus
14
D10
D2
I/O
Data bus
15
D11
D3
I/O
Data bus
16
D12
D4
I/O
Data bus
17
D13
D5
I/O
Data bus
18
D14
D6
I/O
Data bus
19
D15
D7
I/O
Data bus
20
VSS
NU
In
GND
21
A0
A0
Out
Address bus
22
A1
A1
Out
Address bus
23
A2
A2
Out
Address bus
24
A3
A3
Out
Address bus
25
A4
A4
Out
Address bus
26
A5
A5
Out
Address bus
27
A6
A6
Out
Address bus
28
A7
A7
Out
Address bus
29
A8
A8
Out
Address bus
30
A9
A9
Out
Address bus
31
A10
A10
Out
Address bus
32
A11
A11
Out
Address bus
33
A12
A12
Out
Address bus
34
A13
A13
Out
Address bus
35
A14
A14
Out
Address bus
36
A15
A15
Out
Address bus
37
VSS
NU
In
GND
38
A16
A16
Out
Address bus
39
A17
A17
Out
Address bus
40
A18
A18
Out
Address bus
41
A19
A19
Out
Address bus
42
A20
A20
Out
Address bus
43
A21
A21
Out
Address bus
44
A22
A22
Out
Address bus
45
A23
A23
Out
Address bus
46
VSS
NU
In
GND
47
WAIT
WAIT
In
Wait signal
48
BACK
BACK
Out
Bus control request
acknowledge
acknowledge
49
BREQ
BREQ
In
Bus control request
50
P33
DOPS
In
Drawer open signal
51
P34
DR0
Out
Option drawer open signal
52
P35
DR1
Out
Remote drawer No.1 open
signal
signal
Pin
No.
Symbol
Signal
name
In/
Out
Function
53
P36
DR2
Out
Remote drawer No.2 open
signal (NU)
signal (NU)
54
P37
DR3
Out
Remote drawer No.3 open
signal (NU): GND
signal (NU): GND
55
VCC
VCC
In
+5V
56
P40
IFV
In
Slip printer (M-240) interface
connect signal (NU)
connect signal (NU)
57
TMCi
PTMG
In
Printer (DP-730) timing signal
58
P42
TOF
In
Slip printer (M-240) TOF
sensor signal (NU)
sensor signal (NU)
59
P43
BOF
In
Slip printer (M-240) BOF
sensor signal (NU)
sensor signal (NU)
60
FTi1
PRST
In
Printer (DP-730) reset signal
61
P45
NEJ
In
Near end sensor journal side
62
FTi2
SHEN
In
CKDC Interface shift enable
signal
signal
63
P47
NER
In
Near end sensor receipt side
64
VSS
VSS
In
GND
65
P50/FTCA1 TRGI
Out
Dot pulse adjust signal
66
P51
NU
Out
NC
67
P52
NU
Out
NC
68
P53
NU
In
GND
69
P54
NU
Out
NC
70
FMRS
NU
In
NC
71
P56
NU
Out
NC
72
P57/STOP
STOP
Out
System reset output. Normally
73
P60/ER
ERS/ER
Out
SIO control signal (Equipment
ready) (NU)
ready) (NU)
74
P61/DR
DRS/DR
In
SIO control signal
(Data set ready) (NU)
(Data set ready) (NU)
75
P62/CS
CSS/CS
In
SIO control signal
(Clear to send) (NU)
(Clear to send) (NU)
76
P63/CD
CDS/CD
In
SIO control signal
(Carrier detect) (NU)
(Carrier detect) (NU)
77
P64/RR
RRS/RR
Out
SIO control signal
(Ready to receive) (NU)
(Ready to receive) (NU)
78
P65/RS
RSS/RS
Out
SIO control signal
(Request to send) (NU)
(Request to send) (NU)
79
P66
RCO
In
Remote keyboard input signal
80
P67
HP
In
Printer home position signal
81
VSS
NU
In
GND
82
AVSS
NU
In
GND
83
AN0
VPJ
In
Validation sensor journal
84
AN1
VPR
In
Validation sensor receipt (NU)
85
AN3
VPTEST
In
+24V test input
86
P73
VPPS
In
Validation sense signal (NU)
87
AVCC
AVCC
In
+5V
88
VCC
VCC
In
+5V
89
IRQ0
IRQ0
In
Interrupt signal 0
90
IRQ1
IRQ1
In
Interrupt signal 1 (RS-232C)
91
SCK1
UASCK
In
I/R control signal (Shift clock)
92
SCK2
SCK2
In
CKDC Interface sync shift
clock
clock
93
RXD1
/UARX
In
I/R control signal
(Receive data)
(Receive data)
94
TXD1
/UATX
Out
I/R control signal
(Transmit data)
(Transmit data)
– 13 –
Pin
No.
Symbol
Signal
name
In/
Out
Function
95
RXD2
RXD2
In
CKDC Interface shift input
data
data
96
TXD2
TXD2
Out
CKDC Interface shift output
data
data
97
VSS
NU
In
GND
98
EXTAL
EXTAL
In
Crystal oscillator connection
99
XTAL
XTAL
In
Crystal oscillator connection
100
VSS
NU
In
GND
101
X
X
Out
System clock
102
E
NU
Out
Nu
103
AS
AS
Out
Address strobe
104
RD
RD
Out
Read
105
HWR
WR
Out
Write
106
LWR
LWR
Out
Nu
107
RFSH
RFSH
Out
Refresh cycle
108
VCC
VCC
In
+5V
109
MD0
MD0
In
+5V (MODE 3)
110
MD1
MD1
In
+5V (MODE 3)
111
MD2
MD2
In
GND (MODE 3)
112
STBY
STBY
In
+5V (Nu)
– 14 –
2-2. G.A (MPCA6)
1) Pin configuration
GATE ARRAY (F258016PC)
MPCA5
Fig. 2-3
1
RF
2
JF
3
PCUT
4
FCUT
5
VF
6
STAMP
7
SLF
8
SLRS
9
SLMTD
10
RES
11
TRG
12
TRG
13
POFF
14
INT1
15
HTS1
16
SCK1
17
STH1
18
NU
19
NU
20
VCC
21
GND
22
NU
23
VRESC
24
SLTMG
25
SLRST
26
AS
27
RD
28
WR
29
PHAI
30
SDT7
31
SDT6
32
SDT5
33
GND
34
SDT4
35
SDT3
36
SDT2
37
SDT1
38
D0
39
D1
40
D2
16
0
N
U
159
D
O
T
E
N
158
N
U
157
N
U
15
6
N
U
155
N
U
154
N
U
153
N
U
15
2
S
TH
2
151
S
C
K
2
150
H
T
S
2
149
S
L
M
T
R
14
8
S
L
M
T
S
147
S
L
MTD
146
R
J
M
T
R
145
R
A
S
3
14
4
N
U
14
3
G
N
D
142
V
C
C
141
N
U
140
N
U
13
9
N
U
138
N
U
137
R
J
M
T
D
136
R
J
M
T
S
13
5
D
T
5
134
D
T
6
133
D
T
7
132
G
N
D
13
1
D
T
1
130
D
T
2
129
D
T
3
128
D
T
4
1
2
7
R
JT
MG
126
R
J
R
S
T
125
R
A
S
1
124
R
A
S
2
12
3
R
O
S
2
12
2
R
O
S
1
121
O
P
T
C
S
41
D3
42
GN
D
43
D4
44
D5
45
D6
46
D7
47
SS
P
R
Q
48
RESET
49
IN
T
2
50
IN
T
3
51
RXDI
52
TXD
I
53
SC
K
I
54
IR
Q
0
55
A0
56
A1
57
A2
58
A3
59
A4
60
A5
61
GN
D
62
VCC
63
A6
64
A7
65
A8
66
A9
67
A1
0
68
A1
1
69
A1
2
70
A1
3
71
A1
4
72
A1
5
73
A1
6
74
A1
7
75
A1
8
76
A1
9
77
A2
0
78
A2
1
79
A2
2
80
NU
120
EXINT0
119
EXINT1
118
EXINT2
117
EXINT3
116
WRO
115
RDO
114
RA15
113
RA16
112
GND
111
RA17
110
RA18
109
EXWAIT
108
WAIT
107
NU
106
NU
105
NU
104
NU
103
NU
102
NU
101
GND
100
VCC
99
NU
98
NU
97
NU
96
NU
95
NU
94
NU
93
NU
92
NU
91
NU
90
NU
89
TEST
88
MD0
87
MD1
86
IPLON
85
INT4
84
PRST
83
PTMG
82
TRGI
81
A23
– 15 –
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