DOWNLOAD Sharp ER-A770 (serv.man8) Service Manual ↓ Size: 16.58 MB | Pages: 52 in PDF or view online for FREE

Model
ER-A770 (serv.man8)
Pages
52
Size
16.58 MB
Type
PDF
Document
Service Manual
Brand
Device
EPOS / Service Manual Draft
File
er-a770-sm8.pdf
Date
PREV: Sharp ER-A770 (serv.man7) Service Manual

Sharp ER-A770 (serv.man8) Service Manual ▷ View online

8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
RS232
1
2
3
SW2
SSSS312
R9
0
C63
100pF
/CI1
/DCD1
/CI1
/DCD1
VCC
PF1
POLY SW
C58
330pF
FB22
BLM31
C49
330pF
10
  8
9
IC3C
SN75189
13
 11
1
2
IC3D
SN75189
FB19
BLM31
C52
100pF
RCVDT1
/DSR1
RCVDT2
14
15
12
13
10
11
8
1
16
3
2
5
4
7
6
9
IC2
MC145406
/RTS1
+12V
-12V
/CTS2
/CTS1
TXD1
/DTR1
TXD2
/DTR2
/CTS1
/DTR1
/DSR1
/RTS1
/CTS2
/DTR2
TXD1
TXD2
RCVDT1
RCVDT2
VCC
14
15
12
13
10
11
8
1
16
3
2
5
4
7
6
9
IC4
MC145406
FB18
BLM31
FB30
BLM31
FB23
BLM31
FB29
BLM31
FB32
BLM31
FB28
BLM31
C61
100pF
C56
100pF
GND
CI1
ER1
CS1
SD1
RS1
RD1
DR1
CD1
GND
CI2
ER2
CS2
SD2
RS2
 CHANNEL 1
CHANNEL 8
FOR DSUB 9PIN
FOR DSUB 9PIN
FB24
BLM31
FB17
BLM31
FB27
BLM31
9
8
7
6
5
4
3
2
1
CN4
MLX 53014-0910
9
8
7
6
5
4
3
2
1
CN58
MLX 53014-0910
FB26
BLM31
FB25
BLM31
RD2
DR2
CD2
FB31
BLM31
7PIN - - - GND
IC3 14PIN - - - VCC
C69
100pF
/RTS2
/CI2
/DCD2
/DSR2
/RTS2
/CI2
/DCD2
FB20
BLM31
FB21
BLM31
C57
330pF
C48
330pF
 1
  3
2
IC3A
SN75189
 4
  6
5
IC3B
SN75189
C62
100pF
C51
100pF
C71
100pF
/DSR2
8/14
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
SRN1
X 16
S_A0
S_A1
S_A2
S_A3
S_A4
S_A5
S_A6
S_A7
S_A8
S_A9
S_A10
S_A11
S_A12
S_A13
S_A14
S_A15
S_A0
S_A1
S_A2
S_A3
S_A4
S_A5
S_A6
S_A7
S_A8
S_A9
S_A10
S_A11
S_A12
S_A13
S_A14
S_A15
S_D0
S_D0
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
S_A6
S_A0
S_A1
S_M1
S_IORQ-
S_RDS-
S_INT
S_INTS-
S_TM0
S_TM1
S_RES-
VCC
VCC
VCC
VCC
R39
10K
R31
R38
R30
R37
R29
R36
R28
R14
R21
R16
R15
R35
R20
R84
R22
R32
10K
R40
C129
0.1uF
D0
  1
D1
  2
D2
  3
D3
  4
D4
  8
D5
  9
D6
 10
D7
 12
CE
 31
CS0
 33
CS1
 35
M1
 27
IORQ
 21
RD
 14
IEI
 25
IEO
 22
INT
 23
CLK
 29
CLK/TRG0
41
ZC/TO0
16
CLK/TRG1
40
ZC/TO1
18
CLK/TRG2
37
ZC/TO2
19
CLK/TRG3
36
RESET
32
G
N
D
1
3
V
C
C
4
3
IC20
Z80-CTC
X 8
S_D0
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
S_M1
S_MRQ-
S_IORQ-
S_WRS-
S_RDS-
S_WAIT-
S_INT
S_RES-
VCC
VCC
C70
100pF
C72
C73
C106
C65
C68
C59
C67
R97
10K
R49
10K
R89
10K
R48
10K
R92
10K
R70
3K
R91
3K
R71
10K
R69
10K
C104
330pF
A0
27
A1
28
A2
29
A3
30
A4
31
A5
32
A6
34
A7
35
A8
36
A9
37
A10
38
A11
40
A12
41
A13
42
A14
43
A15
44
D0
 9
D1
10
D2
 7
D3
 3
D4
 2
D5
 4
D6
 5
D7
 8
M1
 24
MREQ
 15
IORQ
 16
WR
 19
RD
 18
REFSH
 25
HALT
 14
WAIT
 21
INT
 12
NMI
 13
RESET
 23
BUSRQ
 22
BUSAK
 20
CLK
  1
G
N
D
2
6
+
5
V
6
IC14
Z80-CPU
C43
0.1uF
IC13 14PIN - - - VCC
7,10,11,13PIN - - - GND
IC13 VCC---GND
S_A0
S_A1
S_A2
S_A3
S_A4
S_A5
S_A6
S_A7
S_D0
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
S_DACK0
S_DACK1
S_DACK2
S_DACK3
S_MRD-
S_IOR-
S_IOW-
S_RES-
VCC
VCC
VCC
S_WAIT-
D
2
C
L
K
3
Q5
Q6
PR
 4
CL
  1
IC13A
74HC74
30
31
32
33
36
37
38
39
40
41
7
1
8
9
2
15
14
13
12
5
35
3
4
43
42
11
10
21
22
18
19
20
23
24
25
26
27
1
6
2
9
IC43
UPD71037GB
C263
0.1uF
C1
10uF/16V
C99
10pF
R62
1K
C8
0.1uF
/SRNRESET
SRNRESET
S_DRQ0
S_DRQ1
S_DRQ2
S_DRQ3
S_AEN
S_ASTB
S_AEN
S_DACK1
S_DACK0
S_DACK2
S_DACK3
S_DACK01
S_DACK23
S_RES-
S
_
D
0
S
_
D
1
S
_
D
2
S
_
D
3
S
_
D
4
S
_
D
5
S
_
D
6
S
_
D
7
/TC
TCS
 40
AEN
 38
ASTB
 39
DRQRS
 42
DRQWS
 43
DAK23
 41
RDH
 44
WRH
 45
VDD
 33
VDD
 73
NC
 34
NC
 53
VSS
 12
VSS
 52
CS
 51
DB0
 54
DB1
 55
DB2
 56
DB3
 57
DB4
 58
DB5
 59
DB6
 60
D
B
7
6
1
D
A
K
4
7
T
C
H
4
8
D
R
Q
R
H
4
9
D
R
Q
W
H
5
0
I
N
T
H
4
6
A
B
1
6
4
A
B
0
6
2
C
O
L
6
5
R
D
I
6
6
T
D
I
6
7
C
L
K
1
T
M
0
9
T
M
1
1
0
R
T
S
6
8
R
X
C
6
9
RXD
70
TXC
71
TXD
72
E
74
IRQ
75
LCS
76
RS1
78
RS0
79
MSK
80
MWR
24
INTS
 7
WRS
 6
RDS
 5
MREQ
 4
IOREQ
 3
A15
14
A10
15
A9
16
A8
17
A5
18
A4
19
A1
20
A
0
2
1
W
A
I
T
1
3
I
O
/
W
R
3
6
D
A
K
0
1
2
2
I
O
/
R
D
3
7
R
E
S
3
5
P
H
A
I
8
M
R
D
1
1
D
7
2
5
D
6
2
6
D
5
2
7
D
4
2
8
D
3
2
9
D
2
3
0
D
1
3
1
D
0
3
2
IC11
MB62H149
  4
  5
 6
IC41B
74HC00
  9
 10
 8
IC41C
74HC00
S_E
S_RS0
S_RS1
S_A1
S_A4
S
_
M
R
D
-
S
_
W
A
I
T
-
S_A0
S
_
I
O
R
-
S
_
I
O
W
-
FL3
RCORF6702BHZZ
  3
 4
IC44B
74HC04
 5
  6
IC44C
74HC04
  9
 8
IC44D
74HC04
E
 13
RSO
 10
RS1
 11
DCD
 27
RXC
  4
RXD
  3
TXC
  5
CTS
 28
R/W
 12
CS
  9
RESET
  8
TXD
 6
RTS
 2
LO/DTR
26
FLAG/D
25
TDSR
24
RDSR
23
IRQ
 7
D0
22
D1
21
D2
20
D3
19
D4
18
D5
17
D6
16
D7
15
V
C
C
1
4
V
S
S
1
IC21
MC68B54
C102
0.1uF
X 8
14PIN VCC
7PIN GND
IC45 VCC---GND
S_D0
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
S_DRQ0
S_TXD
S_RTS-
S_D0
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
S_A0
S_A1
S_A2
S_A3
S_A4
S_A5
S_A6
S_A7
S_A8
S_A9
S_A10
S_A15
VCC
VCC
VCKDC
VCC
VCC
R33
R74
R23
R18
R17
R12
C41
0.1uF
A0
10
A1
 9
A2
 8
A3
 7
A4
 6
A5
 5
A6
 4
A7
 3
A8
25
A9
24
A10
21
A11
23
A12
 2
CS1
20
CS2
26
WE
27
OE
22
D0
 11
D1
 12
D2
 13
D3
 15
D4
 16
D5
 17
D6
 18
D7
 19
V
C
C
2
8
G
N
D
1
4
IC1
BR6265BF-10L
C119
220pF
  9
 10
 8
IC39C
74HC00
 12
 13
11
IC45D
74HC08
  1
  2
 3
IC45A
74HC08
C111
0.1uF
R102
10k
R98
10K
/RESET
S_MWR-
S_MRD-
IC39
S_D0
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
14PIN VCC
7PIN GND
14PIN VCC
7PIN GND
SRN_RTS
S_A0
S_A1
S_A2
S_A3
S_A4
S_A5
S_A6
S_A7
S_A8
S_A9
S_A10
S_A11
S_A12
S_A13
S_A15
S_MRD-
S_DRQ1
S_IRQ-
S_D0
S_D1
S_D2
S_D3
S_D4
S_D5
S_D6
S_D7
S_RES-
VCC
VCC
VCC
C42
100pF
C66
1000pF
C2
10uF/16V
C64
0.1uF
A0
 10
A1
  9
A2
  8
A3
  7
A4
  6
A5
  5
A6
  4
A7
  3
A8
 25
A9
 24
A10
 21
A11
 23
A12
  2
A13
 26
A14
 27
CE
 20
OE
 22
VPP
  1
O0
11
O1
12
O2
13
O3
15
O4
16
O5
17
O6
18
O7
19
V
C
C
2
8
G
N
D
1
4
IC8
EP-ROM
  5
 6
IC42C
  9
 8
IC42D
 11
10
IC42E
 13
12
IC42F
74HCU04
C120
220pF
C105
0.1uF
IC44 VCC---GND
S_RXC
S_RXD
S_TXC
S_LCS-
S_RES-
S_A5
S_A8
S_A9
S_A10
S_A15
S_IORQ-
S_MRQ-
S_RDS-
S_WRS-
S_INTS-
S_MWR-
S_MSK
S_RS0
S_RS1
S_LCS-
S_IRQ-
S_E
S_TXD
S_TXC
S_RXD
S
_
R
T
S
-
S
_
T
M
1
S
_
T
M
0
S_MRD-
S_IOW-
S_DACK01
  4
  5
 6
IC45B
74HC08
  9
 10
 8
IC45C
74HC08
 11
10
IC44E
74HC04
23 PIN
63 PIN
77 PIN
NC:   2 PIN
14
/SRCS
/RDH
/WRH
DB[0..7]
AH1
/SINT
AH0
S_ASTB
S_DRQ2
S_DRQ3
DB0
DB1
DB2
DB3
DB4
DB5
DB6
/TC
DB7
VCC
VCC
VCC
VCC
VCC
R64
0
1
3
1
2
IC44F
74HC04
C6
OS 33uF/10V
C81
0.1uF
R61
10K
C47
0.1uF
IC42
VCC---GND
  1
 2
IC42A
74HCU04
C227
100pF
R50
1M
  3
 4
IC42B
74HCU04
X1
CSTCS16MX040
S_16MHz
1
3
2
FB33
BLM21
C85
100pF
TDI
RDI
COL
/SRN_RTS
TO SRN2
/SRN_RTS
TDI
RDI
COL
9/14
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
SRN2
+12V
+12V
1
2
3
IC9
KIA7806
C4
0.22uF/50V
C5
0.1uF/50V
 12
 13
11
IC6D
74LV08
TDI
SRN_RTS
1
3
2
Q8
2SC4699K
R1
150 3W
R26
1.6K
R24
1.6K
  9
 10
 8
IC6C
74LV08
S
D
G
Q7
2SJ187
D2
RB160L40
D4
1SS353
R44
51 1/2W
FL1
CFI06B1H101
1
2
CN7
5045-02
(SRN CN)
FB11
BFD3580R2F
(NOT INSTALL)
2
3
1
VR1
20K VOL.
D3
1SS353
R41
1.2K
D5
1SS353
R43
1k
Q9
2SC4699K
R42
3.9KG
C74
3300pF
R27
1.5KG
A
  9
B
 11
RT
 10
RTC
 12
STRB
 13
YP
14
YS
15
V
C
C
1
6
G
N
D
8
IC5B
SN75115
TP1
TP2
VCC
VCC
R13
15K
C53
0.1uF
RDI
COL
/SRN_RTS
A
  7
B
  5
RT
  6
RTC
  4
STRB
  3
YP
 2
YS
 1
V
C
C
1
6
G
N
D
8
IC5A
SN75115
VCC
R19
560
D1
1SS353
VCC
R25
12K
10/14
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
DRAWER
VRES
IC7
TD62308F
+20V
/DRAW0
/DRAW1
/DR0
/DR1
DRSNS
C76
0.1uF
ICP1
ICP1.0
FB2
C66673
+20V
1
2
3
CN3
5046-03A
DRAWER CN1
1
2
3
CN2
5046-03A
DRAWER CN0
C38
0.1uF
C37
0.1uF
DOPS
FB9
C66673
C40
0.1uF
FB1
C66673
C39
0.1uF
R11
47K
R6
10K
DRSNS
FB3
C66673
C54
1000pF
R8
2.2K
11/14
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