Sharp ER-A770 (serv.man8) Service Manual ▷ View online
(2) Check DIPSW1 by turning SWITCHES 1-8 ON one by one.
(3) When all switches are normal, SUM CHECH is carried out on
EFT ROM,while WRITE/READ CHECH is carried out on RAM.
Display (Normal end)
Display (Error end)
Exit the Diag program.
Press the CANCEL key to exit the program.
3-10. Magnetic Card Reader Diagnostics
Read check of the optional ER-A8MR is performed.
The test program reads the magnetic card of ISO 7811/1-5 standard
and displays the data. When the CANCEL key is pressed, the display
returns to the diagnostics menu.
and displays the data. When the CANCEL key is pressed, the display
returns to the diagnostics menu.
1) Magnetic Card Reader Check
Check content
The test program reads tracks 1 and 2 of the magnetic card of
ISO 7811/1-5, and displays the data in ASCII code.
ISO 7811/1-5, and displays the data in ASCII code.
Display
XXXXX shows the data read by the MCR. Incase of an error, the
error code is displayed as shown below.
error code is displayed as shown below.
Terminating procedure
Press the CANCEL key to terminate the check.
3-11. Drawer Diagnostics
This diagnostics is used to check the drawer open and sensors.
The following menu is displayed. The cursor position is highlighted.
Use key and key to move the cursor. Move the cursor to the
process you desire and press the enter key. The selected individual
diagnostics program is executed. When the CANCEL key is pressed,
the display returns to the diagnostics menu.
Use key and key to move the cursor. Move the cursor to the
process you desire and press the enter key. The selected individual
diagnostics program is executed. When the CANCEL key is pressed,
the display returns to the diagnostics menu.
1) Drawer 1 Check
Check content
The solenoid of drawer 1 is turned on, and the drawer open
sensor value is sensed at every 100ms, and the state is displayed.
sensor value is sensed at every 100ms, and the state is displayed.
Display
Terminating procedure
Press the CANCEL key to terminate the check.
2) Drawer 2 Check
Check content
The solenoid of drawer 2 is turned on, and the drawer open
sensor value is sensed at every 100ms, and the state is displayed.
sensor value is sensed at every 100ms, and the state is displayed.
The display and the terminating procedure are the same as
Drawer 1 Check.
Drawer 1 Check.
DIAGO(SELF TEST) :OK
VHI27040R**1* :OK
256K SRAM :OK
VHI27040R**1* :OK
256K SRAM :OK
In Loop Back Error
ER-DR LOOP ERROR
ER-CI LOOP ERROR
RS-CS LOOP ERROR
In Self Test Error
DIP SW ERROR
In Self Test Error
VHI27040R**1* :ERROR
256K SRAM :ERROR
ER-DR LOOP ERROR
ER-CI LOOP ERROR
RS-CS LOOP ERROR
In Self Test Error
DIP SW ERROR
In Self Test Error
VHI27040R**1* :ERROR
256K SRAM :ERROR
MCR (Magnetic Card Reader) Check
TRACK1:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
TRACK2:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
TRACK1:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
TRACK2:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Magnetic Card Reader Check
TRACK1:BUFFER EMPTY
TRACK1:MCR ERROR
TRACK2:BUFFER EMPTY
TRACK2:MCR ERROR
Displayed when TRACK1 empty
code is sent back.
code is sent back.
Displayed when TRACK1 empty
code is sent back.
code is sent back.
Displayed when TRACK2 empty
code is sent back.
code is sent back.
Displayed when TRACK2 empty
code is sent back.
code is sent back.
Drawer Diagnostics
Drawer 2 Check
Drawer 1 Check
Drawer 1 Check
Drawer Open Sensor : OPEN (or CLOSE)
Drawer Open Sensor : OPEN (or CLOSE)
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
CPU
100pFX4
/AS
/RD
/RFSH
#
/HWR
/LWR
IPLON0
VCC
VCC
VCC
VCC
VCC
VCC
VCC
NOT USED
NOT USED
X4
19.66MHz
19.66MHz
R179
47
R173
47
R165
47
R157
47
R151
47
R138
47
C177
C159
C168
C170
C172
C174
R178
10K
10K
R137
10K
10K
R150
10K
10K
R156
10K
10K
R164
10K
10K
R172
10K
10K
RES
1
NMI
2
VSS
3
D0
4
D1
5
D2
6
D3
7
D4
8
D5
9
D6
10
D7
11
D8
12
D9
13
D10
14
D11
15
D12
16
D13
17
D14
18
D15
19
VSS
20
A0
21
A1
22
A2
23
A3
24
A4
25
A5
26
A6
27
A7
28
A8
29
A9
30
A10
31
A11
32
A12
33
A13
34
A14
35
A15
36
VSS
37
A16
38
A17
39
A18
40
A19
41
A20
42
A21
43
A22
44
A23
45
VSS
46
P30 WAIT
47
P31 BACK
48
P32 BREQ
49
P33
50
P34
51
P35
52
P36
53
P37
54
VCC
55
P40
56
P41
57
P42
58
P43
59
FTI1 P44
60
P45
61
FTI2 P46
62
P47
63
VSS
64
P50
65
P51
66
P52
67
P53
68
P54
69
P55
70
P56
71
P57
72
P60
73
P61
74
P62
75
P63
76
P64
77
P65
78
P66
79
P67
80
VSS
81
AVSS
82
P70
83
P71
84
P72
85
P73
86
AVCC
87
VCC
88
IRQ0
89
IRQ1
90
SCK1 IRQ2
91
SCK2 IRQ3
92
RXD1
93
TXD1
94
RXD2
95
TXD2
96
VSS
97
EXTAL
98
XTAL
99
VSS
100
X
101
E
102
AS
103
RD
104
HWR
105
LWR
106
RFSH
107
VCC
108
MD0
109
MD1
110
MD2
111
STBY
112
IC30
HD641510810
/RESET
NMI
NMI
VCC
R174
C230
D[0..15]
D0
D1
D2
D3
D4
D5
D6
D7
D1
D2
D3
D4
D5
D6
D7
VCC
|SRN1.SCH
|SRN2.SCH
|DRAWER.SCH
|POWER24V.SCH
|POWER12.SCH
|770CN.SCH
|SRN2.SCH
|DRAWER.SCH
|POWER24V.SCH
|POWER12.SCH
|770CN.SCH
|LINK
|LCDDISP.SCH
|FLASH.SCH
|PSRAM.SCH
|MPCA8.SCH
|MCRIF.SCH
|OPC2.SCH
|LCDDISP.SCH
|FLASH.SCH
|PSRAM.SCH
|MPCA8.SCH
|MCRIF.SCH
|OPC2.SCH
|RS232.SCH
R214
R219
R225
R219
R225
R226
R220
R215
R211
R220
R215
R211
10K
X8
R231
R221
C222
C238
C249
C239
C231
C223
C215
100pF
X8
A[0..23]
D[0..15]
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A17
A0
A1
A2
A3
A4
A5
A6
A7
A8
A1
A2
A3
A4
A5
A6
A7
A8
D8
D9
D10
D11
D12
D13
D14
D15
D9
D10
D11
D12
D13
D14
D15
VCC
R227
R232
R235
R233
R228
R222
R217
R232
R235
R233
R228
R222
R217
10K
X8
R180
R216
R210
R212
R205
R206
R198
R200
R195
R201
R216
R210
R212
R205
R206
R198
R200
R195
R201
C232
C240
C250
C251
C259
C241
C233
C225
100pF
X8
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
R158
R146
R144
R153
R167
R154
R168
R166
R152
R143
R147
R159
R175
R160
R176
100
X16
SCKI
RXDI
TXDI
/IRQ0
/IRQ1
FVPON
NORDY
BANK
/IPLON1
VCC
VCC
VCC
VCC
2
1
X7
19.6608MHz
TXD2
NOT USED
RCVDT2
! Be Short Pattern
UASCK
FROM MPCA8
R133
10K
10K
R139
10K
10K
SW3
IPLON SW
R132
10K
10K
R131
33
C17
10uF/10V OS
10uF/10V OS
C147
0.1uF
FB15
BFW7550R2
BFW7550R2
X1
1
X2
2
GND
3
FS0
4
OE#
8
FS1
7
VDD
6
CLK
5
IC27
W42C31-03
R130
0
R136
VCC
FOR RS232C CH8
C146
8pF
C145
8pF
C30
10uF/10V OS
/STOP
MCRINT
/IPLON0
/SHEN1
/IPLON0
VCC
VCC
VCC
/CI2
/RTS2
/DCD2
/CTS2
/DSR2
/DTR2
/DSR2
/DTR2
FOR RS232C CH8
C151
0.1uF
0.1uF
C163
330pF
330pF
R148
10K
10K
C134
470pF
R140
10K
C154
330pF
330pF
/BACK
/BREQ
DOPS
/DR0
/DR1
/DR1
/WAIT
VCC
C217
C209
C195
C196
C189
100pF
X8
C188
C191
C192
C185
C258
C248
C113
C108
100pF
X8
R141
10K
10K
C183
0.1uF
0.1uF
A18
A19
A20
A21
A22
A23
A19
A20
A21
A22
A23
A9
A10
A11
A12
A13
A14
A15
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A17
A18
A19
A20
A21
A22
A23
R199
R213
R207
R196
R197
R188
R213
R207
R196
R197
R188
R186
R189
R190
R187
R230
R234
R78
R77
R189
R190
R187
R230
R234
R78
R77
10K
X24
C180
C224
C214
C216
C207
C208
C201
C202
100pF
X8
C193
C203
C194
C155
100pF
100pF
C165
100pF
100pF
1/14
CHAPTER 8. CIRCUIT DIAGRAM
1. Main PWB
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
VGA CONTROLLER
-WEV
-LCASV
-RASV
-UCASV
MD[0..15]
VCC
VCC
MA8A
MA7A
MA6A
MA5A
MA4A
MA3A
MA2A
MA1A
MA0A
MA7A
MA6A
MA5A
MA4A
MA3A
MA2A
MA1A
MA0A
MD15A
MD14A
MD13A
MD12A
MD11A
MD10A
MD9A
MD8A
MD7A
MD6A
MD5A
MD4A
MD3A
MD2A
MD1A
MD0A
MD14A
MD13A
MD12A
MD11A
MD10A
MD9A
MD8A
MD7A
MD6A
MD5A
MD4A
MD3A
MD2A
MD1A
MD0A
IC37,IC32
VCC --- GND
VCC --- GND
1
2
3
4
5
6
7
8
6
7
8
BR1
33X4
1
2
3
4
5
6
7
8
6
7
8
BR2
33X4
R185
33
C211
C210
C205
C204
C197
C199
C198
C206
C212
C210
C205
C204
C197
C199
C198
C206
C212
C247
0.1uF
C33
10uF/10V
D0
2
D1
3
D2
4
D3
5
D4
7
D5
8
D6
9
D7
10
D8
31
D9
32
D10
33
D11
34
D12
36
D13
37
D14
38
D15
39
A0
16
A1
17
A2
18
A3
19
A4
22
A5
23
A6
24
A7
25
A8
26
VCC
1
VCC
6
VCC
20
NC
11
NC
12
NC
15
NC
30
GND
21
GND
35
GND
40
UCAS#
28
LCAS#
29
RAS#
14
WE#
13
OE#
27
IC37
HY514264B(SOJ)
1
2
3
4
5
6
7
8
6
7
8
BR4
33X4
1
2
3
4
5
6
7
8
6
7
8
BR5
33X4
1
2
3
4
5
6
7
8
6
7
8
BR6
33X4
1
2
3
4
5
6
7
8
6
7
8
BR7
33X4
C261
C260
C254
C253
C244
C243
C235
C234
C228
C236
C237
C245
C246
C255
C256
C262
C260
C254
C253
C244
C243
C235
C234
C228
C236
C237
C245
C246
C255
C256
C262
IC28 VCC --- GND
/VIO2
/SBHE
/IOWR
/IORD
/SBHE
/IOWR
/IORD
/SMEMW
/RFSH
/SMEMR
/RD
/AS
/RASPN12
RASPN2
RASPN2E
/AS
/RASPN12
RASPN2
RASPN2E
/M3SWP
/OWR
/PSRFO
/OWR
/PSRFO
/IPLON0
RES
VCC
VCC
= IC29
IC37
100pF
NOT USED
C167
0.1uF
C23
OS 33uF/10V
C186
100pF
C153
1000pF
1000pF
C150
0.1uF
194
OS 10uF/10V
/VMEM
/VMEM2
/VMEM2
/HWR
/LWR
/LWR
#
/RES
A0
PCE21E
A20
/VWAITI
/VWAIT
/VWAIT
/DWRI
/DRDI
VCC
VCC
C158
47pF
R121
0
R135
33
R129
33
C162
C157
C157
330pF X2
R128
0
/VHEM
1
/VHEM2
2
/HWR
3
/LWR
4
DHAI
5
VCC
6
/ISPEN
7
/VWAITI
8
/VWAIT
9
/DWRI
10
/DWRO
11
/DRDI
12
/DRDO
13
RES
14
/RES
15
A0
16
GND
17
A20
18
PCE21E
19
PCE21O
20
PCE22O
21
PCE22E
22
/IPLON0
23
/PSRFO
24
/OWR
25
/M3SWP
26
Y2/SCLK
27
VCC
28
Y1/RESET
29
MODE
30
RASPN2E
31
RASPN2
32
/RASPN12
33
/AS
34
/RD
35
/RFSH
36
/SMEMR
37
/SMEMW
38
GND
39
/COE0
40
/IORD
41
/IORW
42
/SBHE
43
/VIO2
44
IC28
ISPLSI2032
C190
100pF
IC48 16PIN - - - VCC
8PIN - - - GND
A[0..23]
/RFSH
PCE21O
PCE22O
PCE22E
PCE22O
PCE22E
/SBHE
/IORD
/IOWR
/SMEMW
/SMEMR
/SMEMR
A19
A18
A17
A18
A17
A23
A22
A21
A20
A20
/VMEM2
/VIO2
VCC
VCC
1
2
3
4
VCC
VCC
C161
0.01uF
0.01uF
X5
15MHz
A
1
B
2
C
3
G1
6
G2A
4
G2B
5
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
IC48
74LV138
1
2
3
IC6A
74LV08
C55
0.1uF
C267
51pF
51pF
IC29 VCC --- GND
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MD8
MD9
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MD8
MD9
MD10
MD11
MD12
MD13
MD14
MD15
MD11
MD12
MD13
MD14
MD15
MA0
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
VCC
VCC
XIN
1
GND
2
AEN
3
-SBEH
4
-IOWR
5
-IORD
6
-SMEMW
7
-SMEMR
8
A21
9
A20
10
SA19
11
SA18
12
SA17
13
SA16
14
SA15
15
SA14
16
SA13
17
SA12
18
SA11
19
SA10
20
SA9
21
SA8
22
SA7
23
SA6
24
SA5
25
SA4
26
SA3
27
SA2
28
SA1
29
SA0
30
-BIOSEN
31
-REFRESH
32
GND
33
VDD
34
SD15
35
SD14
36
SD13
37
SD12
38
GND
39
SD11
40
SD10
41
SD9
42
VDD
43
SD8
44
SD7
45
SD6
46
GND
47
SD5
48
SD4
49
SD3
50
SD2
51
SD1
52
SD0
53
GND
54
VDD
55
IOCHRDY
56
-MEMCS16
57
-IOCS16
58
GND
59
VDD
60
DCLK
61
DISP
62
LP
63
FP
64
UD7
65
UD6
66
UD5
67
UD4
68
UD3
69
UD2
70
UD1
71
UD0
72
GND
73
VDD
74
LD7
75
LD6
76
LD5
77
LD4
78
LD3
79
LD2
80
LD1
81
LD0
82
BACKON
83
LCDON
84
LOGICON
85
GND
86
VDD
87
MA9
88
MA8
89
MA7
90
MA6
91
MA5
92
MA4
93
MA3
94
MA2
95
MA1
96
MA0
97
GND
98
VDD
99
-RAS
100
-UCAS
101
-LCAS
102
-WE
103
MD15
104
MD14
105
MD13
106
MD12
107
MD11
108
MD10
109
GND
110
VDD
111
MD9
112
MD8
113
MD7
114
MD6
115
MD5
116
MD4
117
MD3
118
MD2
119
MD1
120
MD0
121
GND
122
VDD
123
RESET
124
MINTEST
125
TEST
126
GND
127
XO
128
IC29
MN89303A
100pF x 2
NOT USED
-WEV
-LCASV
-UCASV
-RASV
-LCASV
-UCASV
-RASV
-WEV
-LCASV
-RASV
-UCASV
VCC
MA8A
MA7A
MA6A
MA5A
MA4A
MA3A
MA2A
MA1A
MA0A
MA7A
MA6A
MA5A
MA4A
MA3A
MA2A
MA1A
MA0A
MD15A
MD14A
MD13A
MD12A
MD11A
MD10A
MD9A
MD8A
MD7A
MD6A
MD5A
MD4A
MD3A
MD2A
MD1A
MD0A
MD14A
MD13A
MD12A
MD11A
MD10A
MD9A
MD8A
MD7A
MD6A
MD5A
MD4A
MD3A
MD2A
MD1A
MD0A
VCC
VEE
D0
2
D1
3
D2
4
D3
5
D4
7
D5
8
D6
9
D7
10
D8
35
D9
36
D10
37
D11
38
D12
40
D13
41
D14
42
D15
43
A0
18
A1
19
A2
20
A3
21
A4
24
A5
25
A6
26
A7
27
A8
28
VCC
1
VCC
6
VCC
22
NC
13
NC
14
NC
17
NC
32
GND
23
GND
39
GND
44
UCAS#
30
LCAS#
31
RAS#
16
WE#
15
OE#
29
IC32
M5M4V4265T-6
R191
10K
X5
R193
R192
R202
R208
C220
100pF
C219
C218
C218
C221
100pF
100pF
1
2
3
4
2
3
4
5
6
7
8
BR3
BR33x4
2
3
1
Q3
DTA144EK
for LCD CN
-24V
33 x 4
330pF x 4
DL0
DL1
DL2
DL3
DL1
DL2
DL3
DL4
DL5
DL6
DL7
DL5
DL6
DL7
VCC
NOT USED
NOT USED
DL4
DL5
DL6
DL7
DL5
DL6
DL7
DL0..DL3
1
2
3
1
2
3
LCDENB
+12V
C160
C164
C166
C169
C164
C166
C169
C171
C173
C175
C178
C173
C175
C178
2
3
1
Q2
DTC114YK
R161
1/2W 1.2K
R181
47K
Q4
KTA1273Y
Q5
KTC3199GR
R183
47K
47K
R182
15K
15K
1
2
3
4
2
3
4
CN12
R170
33
X1
1
X2
2
GND
3
FS0
4
OE#
8
FS1
7
VDD
6
CLK
5
IC31
W42C31-03
C29
OS 10uF/10V
C181
0.1uF
R171
0
R163
X6
25.175MHz
C176
8pF
X2
33 x 4
BKLT
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA2
MA3
MA4
MA5
MA6
MA7
MA8
IC29 #1
VCC
NOT USED
LCDENB
R124
R134
R126
R134
R126
R127
R184
R177
R169
R162
R177
R169
R162
R155
R149
R145
R142
R149
R145
R142
FB16
BFW7550R2
7PIN - - - GND
IC48 VCC --- GND
IC41 14PIN - - - VCC
IC41 VCC --- GND
DISP
LP
FP
FP
D[0..15]
/VWAITI
D8
D9
D10
D11
D12
D13
D14
D15
D0
D1
D2
D3
D4
D5
D6
D7
VCC
VCC
DCLK
for LCD CN
IC6 VCC --- GND
C182
0.1uF
12
13
11
IC41D
74HC00
1
2
3
IC41A
74HC00
C79
0.1uF
R125
1K
C156
330pF
C148
100pF
C149
330pF
C152
330pF
C179
2/14
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
FLASH ROM
A[0..20]
NOT USED
1
2
3
4
5
IC47
7S04FU
IC35 VCC --- GND
A0
A1
A2
A3
A4
A5
A6
A1
A2
A3
A4
A5
A6
VCC
VCC
C257
0.1uF
C34
10uF/16V
A0
32
A1
28
A2
27
A3
26
A4
25
A5
24
A6
23
A7
22
A8
20
DQ15
52
DQ0
33
DQ1
35
DQ2
38
DQ3
40
DQ4
44
DQ5
46
DQ6
49
DQ7
51
DQ8
34
DQ9
36
DQ10
39
DQ11
41
DQ12
45
DQ13
47
DQ14
50
VCC
9
VCC
43
VCC
37
GND
21
GND
42
GND
48
A9
19
A10
18
A11
17
A12
13
A13
12
A14
11
A15
10
A16
8
A17
7
A18
6
A19
5
A20
4
CE0
14
CE1
2
OE
54
WE
55
WP
56
RP
16
RY/BY
53
BYTE
31
3/5
1
VPP
15
NC
3
NC
29
NC
30
IC35
LH28F016SUT
D[8..15]
D8
D9
D10
D11
D12
D13
D14
D9
D10
D11
D12
D13
D14
D[0..7]
D15
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
/RD
D0
D1
D2
D3
D4
D5
D6
D7
D1
D2
D3
D4
D5
D6
D7
/HWR
/IPLON0
VCC
A21
/A21
(BE1H#)
R209
FVPON
NORDY
/HWR
/FROS1
/RES
/IPLON0
VCC
A21
R204
0
R203
1K
C213
100pF
3/14
Click on the first or last page to see other ER-A770 (serv.man8) service manuals if exist.