Sharp ER-A450 (serv.man2) Service Manual ▷ View online
If a compare error is found in the check sequence from PASS1 to
PASS6, error print (error code E1) is performed. If there is no error
found to the end of the last address, the operation is completed
normally.
Then the following address check is performed. "
PASS6, error print (error code E1) is performed. If there is no error
found to the end of the last address, the operation is completed
normally.
Then the following address check is performed. "
" shows a valid
address, and "
✕
" shows an invalid address.
In case of an error, error code E2 is printed.
Check Address
JOB#201(ER-03RA)
200000H
200001H
200002H
200004H
200008H
200010H
200020H
200040H
200080H
200100H
200200H
200400H
200800H
201000H
202000H
204000H
208000H
210000H
220000H
240000H
260000H
3) Check the following items.
Check the termination print.
4) Test termination
The test terminates after printing the termination printout.
Termination print
Termination print
E01---
200
(data check error)
E02---
200
(address check error)
200
(normal end)
: Error address
[15] RS-232 loop back test
Connect the loop back connector(UKOG-6705RCZZ) to RS232 con-
nector.
nector.
1) Key operation
2) Functional description
Control signal check
OUT PUT
INPUT
/ER
/RS
/DR
/CI
/CD
/CS
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
Data communication check
Perform 256-byte branch loop back test between SD and RD.
Perform 256-byte branch loop back test between SD and RD.
DATA: $00 - $FF
BAUD RATE: 9600 BPS
Display:
4) Test termination
This check is terminated automatically.
The test terminates with the test and message printed
The test terminates with the test and message printed
XX: Error code
E1
ER-DR error
E2
ER-CI error
E3
RS-CD error
E4
RS-CS error
E5
SD-RD error (DATA error)
E6
SD-RD error (DATA error/Flaming error)
2
0
7-SEGMENT DISPLAY:
0
500
TL
5 0 0
Normal end
Error
NG
RS TEST
ER XX
RS TEST
OK
5 – 6
CHAPTER 6. DOWN LOAD
FUNCTION
FUNCTION
1. General
RAM data can be transmitted in the following two methods.
Save the data before servicing as follows:
ECR
←→
ECR
•
Cable: 9 pin D-SUB – 9 pin D-SUB
Fig. 1-1
ECR
←→
ER-02FD
•
Cable: 9 pin D-SUB – 25 pin D-SUB
Fig. 1-2
2. SIO interface specification
1) Operation:
Simplex
2) Line configuration:
Direct connect
3)
Data
rate:
19200, 9600, 4800, 2400, 1200, 600,
300BPS (Selected by SRV JOB#903-A)
300BPS (Selected by SRV JOB#903-A)
4) Sync mode:
Asynchronous
5) Checking:
Vertical parity (odd)
6) Code:
7 bits (ASCII)
7) Bit sequence:
LSB first
8) Line level:
RS232 level
9) Data forma:
FIg. 2-1
3. Location of connector pins
ECR-ECR cable
Fig. 3-1
ECR
ECR
ECR
ER-02FD
P
b1
b2
b3
b4
b5
b6
b7
LSB
MSB
Start bit
Parity
bit
Stop
bit
SD
3
SD
RD
CTS
RD
2
6
8
3
2
6
8
5
5
SG
RTS
7
DCD
1
DTR
4
DSR
7
1
4
ECR
CTS
SG
RTS
DCD
DTR
DSR
9PIN D-SUB
9PIN D-SUB
SD : TRANSMITTED DATA
RD : RECEIVED DATA
DTR: DATA TERMINAL READY
DSR: DATA SET READY
RTS: REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS: CLEAR TO SEND
RD : RECEIVED DATA
DTR: DATA TERMINAL READY
DSR: DATA SET READY
RTS: REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS: CLEAR TO SEND
ECR
6 – 1
ECR-ER-02FD cable
Fig. 3-2
4. Application specification
The following service (SRV) modes are available for the serial data
transfer of the ECR
transfer of the ECR
1) Data transmit (Source side)
X: 0=SSP DATA
2) Data receive (Target)
5. Data format
A single byte image of the RAM data to be transmitted is divided into
a high order 4 bits and low order 4 bits and converted into ASCII
code. Then, the image of the memory is sent in the following format:
a high order 4 bits and low order 4 bits and converted into ASCII
code. Then, the image of the memory is sent in the following format:
Memory top address: 0000H
∼
FFFFH
Top address of the memory to be transmitted in ASCII number.
Page:1F
∼
27,00
Page of the memory to be transmitted in ASCII number.
Sum check
End code: Hex 0D
NOTE:
•
In order that contents of RAM memory may not over-ride pages for
this job, RAM image is sent in unit of 64 bytes from the address
0000. In other words, 128 bytes are sent at one time on the
transmit data format.
this job, RAM image is sent in unit of 64 bytes from the address
0000. In other words, 128 bytes are sent at one time on the
transmit data format.
RAM DATA FORMAT
Exhibit:
Code table
HEX
ASCII
Character
HEX
ASCII
Character
0
30
0
8
38
8
1
31
1
9
39
9
2
32
2
A
41
A
3
33
3
B
42
B
4
34
4
C
43
C
5
35
5
D
44
D
6
36
6
E
45
E
7
37
7
F
46
F
6. END record
End message:
Fixed to 30303030.
End massage:
Fixed to 4646.
Sum check
End code:
CR (0D)
SD
2
SD
RD
CTS
RD
3
6
5
3
2
6
8
ER-02FD
7
5
SG
RTS
4
DCD
8
DTR
20
DSR
7
1
4
ECR
CTS
SG
RTS
DCD
DTR
DSR
1
FG
FRAME GROUND is connected
to the shield of the cable.
to the shield of the cable.
25PIN D-SUB
9PIN D-SUB
SD : TRANSMITTED DATA
RD : RECEIVED DATA
DTR: DATA TERMINAL READY
DSR: DATA SET READY
RTS: REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS: CLEAR TO SEND
FG : FRAME GROUND
RD : RECEIVED DATA
DTR: DATA TERMINAL READY
DSR: DATA SET READY
RTS: REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS: CLEAR TO SEND
FG : FRAME GROUND
996
X
TL
All data
X
ST
(Auto baud rate setting: ECR to ECR only)
(Baud rate setting: #903-A)
998
X
TL
(Auto baud rate setting: ECR to ECR only)
(Baud rate setting: #903-A)
ST
1
2
3
4
Data (128bytes)
BD
7E
83
FC
03
B6
42 44 37 45 38 33 46 43 30 33 42 36
30
3
4
30
30
30
1
2
6 – 2
7. Operational method
1) To prepare an ECR to receive data from another ECR or the
ER-02FD, the memory size of the receiving unit must the same as
or greater than the sending unit.
or greater than the sending unit.
2) Master reset the receiving ECR.
3) Connect loader cable between ECRs.
4) Set the receiving ECR ready to receive.
5) Start the sending ECR.
X: 0 = SSP
6) Transmission status.
Description of error status
1: Application error (Command error)
2: Application error (Parity error)
3: Application error (Check sum error)
4: Application error (Data size error)
5: Hard ware error
6: Power off error
7: Time out error
11: Application error (Transmit data size error)
12: Application error (Block sequence error)
7) Service reset the receiving ECR.
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.)
2) Connect the 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
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.
998
X
TL
(Auto baud rate setting: ECR to ECR only)
(Baud rate setting: #903-A)
ST
996
X
TL
All data
X
ST
(Auto baud rate setting: ECR to ECR only)
(Baud rate setting: #903-A)
OFF ON OFF OFF OFF ON
X
ON OFF OFF
OFF ON
DS-1
1
2
3
4
5
6
7
8
1
2
3
4
DS-2
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
996
X
All data
X
TL
998
X
TL
6 – 3
Click on the first or last page to see other ER-A450 (serv.man2) service manuals if exist.