Sharp ER-A570 (serv.man7) Service Manual ▷ View online
8. Saving/Loading of data to/From the FD
unit Configuration
1) Turn off the power switch of the ER-02FD, and set the DIP
switches of the FD unit as follows:
ER-02FD (The ER-01FD functions of the ER-02FD are
used.)
used.)
DS-1
DS-2
1
2
3
4
5
6
7
8
1
2
3
4
OFF ON OFF ON
ON OFF OFF OFF
X
OFF OFF OFF
Data rate
4
6
Rate [bps]
OFF
OFF
19200
ON
OFF
9600
OFF
ON
4800
ON
ON
2400
Disk format
CCP/M: OFF
PC-DOS: ON
CCP/M: OFF
PC-DOS: ON
2) Connect the QCNW–7578RCZZ cable.
Saving data
1) Turn on the power switch and insert a floppy disk which has been
formatted.
2) Start the SEND JOB on the ECR side as follows:
X: 0 = SSP
1 = Standard RAM+01RA/02RA
2 = 01MB (0.5MB)/02MB (0.5MB:1st half)
3 = 02MB (0.5MB: 2nd half)
2 = 01MB (0.5MB)/02MB (0.5MB:1st half)
3 = 02MB (0.5MB: 2nd half)
3) Data transmission is started and the green lamp on the ER-02FD
blinks.
Loading data
1) Turn on the power switch and insert the floppy disk which stores
the data.
2) Start the RECEIVE JOB on the ECR side as follows:
3) Press the SEND key on the FD unit.
4) Data transmission is started and the Green lamp on the ER-02FD
blinks.
5) Service reset the ECR.
CHAPTER 7. SERVICE PRECAUTION
1. Hints and tips when installing the RAM
chip option (ER-02RA)
1) When the RAM option (ER-02RA) is to be installed to the main
PWB, be sure that the ER-02RA is facing in the right direction.
2. Printer motor lock
In the ER-A570, the motor will automatically turn off when a prema-
ture halting of the timing signals occurs due to a paper misfeed,
ribbon jam, intrusion of alien object, etc. When the motor stops, an
intermittent beeping will occur, with no indication in the display.
ture halting of the timing signals occurs due to a paper misfeed,
ribbon jam, intrusion of alien object, etc. When the motor stops, an
intermittent beeping will occur, with no indication in the display.
<How to reset the motor lock>: R/J printer
1) Disconnect the AC cord from the wall outlet. And remove the
cause.
2) When power is restored, the following is displayed.
PRINTER ERROR
Fig. 2-1
3) Depress the [CL] key to return the ER-A570 to the point where the
cause happened. The power failure symbols will be printed after a
line feed.
line feed.
4) Print sample
Fig. 2-2
3. Note for upper cabinet installation
When installing the upper cabinet again, be sure to connect the GND
wire (QCNW-7120RCZZ) to the proper connector in front of the
printer.
wire (QCNW-7120RCZZ) to the proper connector in front of the
printer.
TL
998
X
996
X
All data
TL
X
40
4. Others
1) If D1 shorts, the VRAM is shorted with the 5V supply.
In this event, normal operation is usually possible, except that it
may not recharge the battery, failing to back it up, resulting in
memory frustration.
may not recharge the battery, failing to back it up, resulting in
memory frustration.
Fig. 4-1
2) When installing the option I/F PWB, be sure to connect it to the
left side (under the power PWB) when viewed from the rear of the
body. Do not use the right side (under the printer).
body. Do not use the right side (under the printer).
3) When removing or installing the option slot rear cover, be sure to
lift up the pop-up display. Especially when installing the cover, be
sure not to pinch the pop-up display cable between the upper
cabinet and the cover.
sure not to pinch the pop-up display cable between the upper
cabinet and the cover.
5. Printer printing speed adjustment
When the printer unit or the power PWB is replaced, the following
adjustments should be performed.
adjustments should be performed.
1) Tools required for adjustment
1
A synchroscope or a universal counter
2
A digital voltmeter
2) Adjustment procedure
1
Remove fuse F2 from the main PWB.
2
Connect the probe of the synchroscope or the digital voltmeter
with 1 pin and GND of Q9 (KTD1414) on the main PWB.
with 1 pin and GND of Q9 (KTD1414) on the main PWB.
3
Connect the digital voltmeter pin with fuse F2 and GND of the
main PWB.
main PWB.
4
Perform the master reset.
5
Turn VR1 on the PS PWB to adjust the voltage to 26.4V (Ap-
prox. 2.7 lines/sec).
prox. 2.7 lines/sec).
∗
Adjust VP so that it is in the range of 24V to 26.4V.
6
Perform the printing procedure. (Printing is not performed be-
cause the fuse is removed.)
cause the fuse is removed.)
7
Measure the time of TW with the waveform of Q9 1 pin as
shown in the figure below.
shown in the figure below.
8
TW
σ
357 ms: The adjustment is completed.
TW < 357 ms:
Adjust VR1 on the PS PWB so that TW may
be 357 ms
be 357 ms
±
5 ms.
9
Turn off the power and disconnect the probe.
Φ
Attach the fuse to the original position.
6. For the adjustment of printer dot pulse,
refer to CHAPTER 5. TEST FUNCTION,
Test No. 150.
Test No. 150.
GND
Synchroscope
Didital voltmeter
F2
Q9
B
Battery
R90
390
390
Ω
VRAM
D21
1SS353
+5V
TL
950
X
TW
Q9
1 pin waveform
1 pin waveform
About 1.2V
41
1
234
5678
9
RA1
10K
+5V
1
234
5678
9
RA2
10K
1
2345
678
9
RA3
10K
+5V
+5V
1
234
567
89
RA4
10K
NM
I
/R
ES
ET
D0
+5V
R13
33
R14
33
+5V
RES
1
NM
I
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
WA
IT
47
BACK
48
BREQ
49
P33
50
P34
51
P35
52
P36
53
P37
54
VCC
55
P40
56
TM
C
1
57
P42
58
P43
59
FT11
60
P45
61
FT12
62
P47
63
VSS
64
FTCA1
65
P51
66
P52
67
P53
68
P54
69
FMRS
70
P56
71
ST
O
P
P5
7
72
ER
P6
0
73
DR P
6
1
74
CS
P
6
2
75
CD P
6
3
76
RR P
6
4
77
RS
P
6
5
78
P66
79
P67
80
VSS
81
AVS
S
82
AN0
83
AN1
84
AN2
85
P73
86
AVCC
87
VCC
88
IR
Q
0
89
IR
Q
1
90
IR
Q
2
91
SCK2
92
RX
D
1
93
TXD1
94
RX
D
2
95
TXD2
96
VSS
97
EXTAL
98
XTAL
99
VSS
100
X
101
E
102
AS
103
RD
104
HWR
105
LW
R
106
RFSH
107
VCC
108
MD0
109
MD1
110
MD2
111
STBY
112
IC
2
C
P
U
(
H
D
6415108)
R23
33
R24
33
R25
33
/R
F
S
H
+5V
R36
100
10Kx3
R26
R27 R28
R29
10K
R30
4.
7K
/AS
/R
D
/W
R
/R
F
S
H
#
+5V
+5V
+5V
+5V
+5V
C41
330p
C42
330p
R11
1K
R12
1K
R21
10K
F
R22
12K
F
VPTEST
+5V
+5V
+24V
9
10
8
IC
1
C
74HC86
12
13
11
IC
1
D
74HC86
330px3
VPR
VP
J
/VPPS
SC
KI
RXD
TXD
RX
D2
TX
D
I
/IR
Q
0
C45
C46
C47
C52
47P
1
3
2
X1 9.
83M
H
Z
R15
33
R16
33
R17
33
R18
33
R19
33
R20
33
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
330pX8
C1 C2 C3 C4 C5 C6 C7 C8
V
CC;
1
4
P
IN
G
ND;
0
7
P
IN
1
2
3
IC
1
A
74HC86
4
5
6
IC
1
B
74HC86
C25 C26 C27 C28 C29 C30 C31 C32
A19
A18
A18
+5V
C9 C10 C11 C12 C13 C14 C15 C16
C17 C18 C19 C20 C21 C22 C23 C24
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
DOPS
/W
AI
T
/B
AC
K
/BR
E
Q
/D
R
0
C40
330p
R1
10K
R7
4.
7
K
R8
4.
7
K
R9
4.
7
K
+5V
+5V
+5V
+5V
/S
T
O
P
/RS
/R
R
/C
D
/CS
/D
R
/ER
TR
G
I
/NER
R2 10K
/D
R
1
/D
R
2
/D
R
3
/I
F
V
330pX8
330pX8
330pX8
R6
10K
C43
100p
C44
100p
+5V
/W
AI
T
/BAC
K
/BR
E
Q
DOPS
/D
R
0
/D
R
1
/D
R
2
/D
R
3
R10
10K
+5V
R4
10K
C38
330p
C39
330p
R3
10K
R5
10K
/T
O
F
/BO
F
/SH
E
N
+5V
+5V
+5V
+5V
/T
O
F
/B
O
F
/PRST
/N
EJ
/SH
E
N
/P
T
M
G
C37
330p
R31
10K
D2
DSS133
+5V
C35
10u/16V
C36
47u/10V
C
114
0.1uF
D1
DSS133
+5V
C33
0.
1u
C34
0.
1u
VCC
D3
DSS133
/IF
V
VSS
GN
D
AG
N
D
B
)
C
)
C
)
C
)
C
)
C
)
C
)
C
)
D
)
(3
-2
B
)
(2
-7
B
)
(5
-3
D)(5
-7
B
)
(2
-7
C)
(3
-8
D
)(5
-2
C)
(2
-7
C)
(3
-8
D
)(5
-2
C)
(2
-7
C)(5
-7
B
)
(2
-7
C
)
(2
-7
B
)
(2
-7
B
)
(2
-7
B
)
(3
-7
B
)
(3
-7
B
)
(2
-7
B
)
(4
-1
A
)
(4
-1
B
)
(4
-1
B
)
(3
-7
B
)
(3
-7
A
)
(3
-7
A
)
(3
-7
A
)
(3
-7
A
)
(5
-5
C
)
(3
-7
A
)
(4
-1
A
)
(2
-2
A
)
(5
-5
C
)
(4
-1
B
)
(2
-1
A
)
(5
-4
D
)
(2
-1
A
)
(5
-4
D
)
D
[0
..7
]
A[0
..2
3
]
A[0
..2
3
]
D
[0
..7
]
PE
+5V
R
105
10K
C
125
100p
RAS3
123
456
789
RA7
10K
123
4567
89
RA8
10K
+5V
+5V
RF
1
JF
2
PCUT
3
F
CUT
4
VF
5
ST
AM
P
6
SLFS
7
SLRS
8
SL
PM
T
D
9
RES
10
TRG
11
TRG
12
IN
T
0
13
IN
T
1
14
HTS1
15
SCK1
16
STH1
17
N.
U
18
N.
U
19
VCC
20
VSS
21
VPON
22
VRESC
23
SL
T
M
G
24
SLRST
25
AS
26
RD
27
WR
28
#
29
DT6
31
DT5
32
VSS
33
DT4
34
DT3
35
DT2
36
DT1
37
D0
38
D1
39
D2
40
D3
41
VSS
42
D4
43
D5
44
D6
45
D7
46
RESET
48
SPRQ
47
IN
T
2
49
IN
T
3
50
RXDI
51
TX
D
I
52
SC
KI
53
IR
Q
0
54
A0
55
A1
56
A2
57
A3
58
A4
59
A5
60
EX
IN
T
0
120
EX
IN
T
1
119
EX
IN
T
2
118
EX
IN
T
3
117
WR
0
116
RD0
115
RA15
114
RA16
113
VSS
112
RA17
111
RA18
110
EX
W
A
IT
109
WA
IT
108
N.
U
107
N.
U
106
N.
U
105
N.
U
104
N.
U
103
N.
U
102
VSS
101
VCC
100
N.
U
99
N.
U
98
N.
U
97
N.
U
96
N.
U
95
N.
U
94
PT
M
G
83
TR
G
I
82
A23
81
N.
U
80
A22
79
A21
78
A20
77
A19
76
A18
75
A17
74
A16
73
A15
72
A14
71
A13
70
A12
69
A11
68
A10
67
A9
66
A8
65
A7
64
A6
63
VCC
62
VSS
61
PR
ST
84
N.
U
93
N.
U
92
N.
U
91
N.
U
90
TEST
89
MD1
88
MD0
87
IPL
O
N
86
IN
T
4
85
DT7
30
N.
U
160
DO
T
E
N
159
VC
O
N
158
RDY
157
BUSY
156
SCK
155
RD
154
SD
153
STH2
152
SCK2
151
HTS2
150
SLMTR
149
SL
M
T
S
148
SLMTD
147
RJ
M
T
R
146
RAS3
145
BT
O
N
144
VSS
143
VCC
142
N.
U
141
N.
U
140
N.
U
139
N.
U
138
RJ
M
T
D
137
RJ
M
T
S
136
DOT5
135
DOT6
134
DOT7
133
VSS
132
DOT1
131
DOT2
130
DOT3
129
DOT4
128
RJ
T
M
G
127
RJRST
126
RAS1
125
RAS2
124
RO
S
2
123
RO
S
1
122
OP
T
C
S
121
IC
3
G
.A
(
M
PC
A5
)
1234
56
789
RA5
10K
+5V
C55
330p
123
45
RA6
10K
R39
10K
PFR0
PF
J
0
/F
CUT
0
/ACUT0
/VPF
0
/ST
A
M
P
0
/SL
F
S
/S
L
R
S
/KR
Q
+5V
+5V
TRG
/PO
F
F
/M
2
4
0
/M
T
D
S
HTS
STH
VRESC
TSL
RSL
/A
S
/R
D
/W
R
#
/D
T
7
/D
T
6
/D
T
5
/D
T
4
/SC
K
470pX5
C
117
C
118
C
119
C
120
C
121
+5V
+5V
C63
C64
RJ
T
RJR
/EX
IN
T
0
/EX
IN
T
1
/T
R
Q
1
/T
R
Q
2
330px5
C60
C61 C62
C65 C66
C67 C68
C59
330p
C69
330p
330px4
R35
10K
+5V
D0
D1
D2
D3
D4
D5
D6
D7
R32
10K
R33
10K
+5V
+5V
/D
T
1
/D
T
2
/D
T
3
NM
I
/R
ES
ET
TX
D
I
SC
KI
RX
D
2
/IR
Q
0
(
)()
C48
100p
C49 330p
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
()
R34
10K
C51
100p
+5V
+5V
R
108
1K
/E
XW
AI
T
/W
AI
T
/IPL
O
N
TR
G
I
(
)
C50
330p
A16
A17
A18
A19
A20
A21
A22
A23
C56
0.1uF
C57
10uF
/1
6
V
+5V
VCC
C58
0.1uF
C
)
C
)
(4
-7
B
)
(4
-5
B
)
(4
-7
A
)
(4
-7
A
)
(4
-7
B
)
(4
-7
B
)
(5
-4
D)
(5
-4
D)
(5
-4
C)
(5
-4
C)
(4
-4
B
)
(4
-6
C
)
(5
-5
C
)
(5
-5
C
)
(5
-5
C
)
(5
-5
C
)
(4
-1
D
)
(5
-4
C)
(5
-4
C)
(1
-3
D)
(1
-3
D)
(1
-3
D)
(1
-3
D)
(5
-4
D
)
(5
-4
D
)
(5
-4
D
)
(5
-4
D
)
(5
-4
D
)
(5
-4
D
)
(5
-4
D
)
(1
-6
D
)
(3
-2
B
)
(1
-3
C
)
(1
-3
C
)
(1
-3
C)
(1
-3
C
)
(4
-3
B
)
(5
-2
C)
(4
-7
B
)
(4
-7
B
)
(5
-7
C)
(5
-7
C)
(5
-7
C
)
(5
-7
C
)
(5
-7
C
)
(1
-8
B
)
(5
-7
B
)
(1
-2
B
)
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