Read Sharp XE-A207 (serv.man3) Service Manual online
XE-A207/A217/A307
HARDWARE DESCRIPTION
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4. SIGNAL CONNECTION DIAGRAM
Connection between the Host (PC) and the Terminal (ECR)
Note: If the connector of the Host PC is “9 PIN D-SUB,” the PIN num-
ber is the same as that of the ECR.
5. SETTING OF RS232 PORT
The signal of 9-pin for RS232 port can be changed to “RI” or “+5V” by
positioning the short pin of “SP3” on the main PWB.
positioning the short pin of “SP3” on the main PWB.
However the factory-shipped location of the short pin varies depending
on the models.
Specifications of RS232 port
Usage: For Standard RS232 port
Connector: D-SUB 9pin
Data rate: max. 38,400 bps.
Power Supply: 5V/400mA (*)
Pin assign
* Default Setting
XE-A207/A217: RI (SP3: 2pin - 3pin)
XE-A307: +5V (SP3: 1pin - 2pin)
Setting of SP3
SD
Transmitted Data
RD
Received Data
DTR (ER)
Data Terminal Ready
DSR (DR)
Data Set Ready
RTS (RS)
Request To Send
DCD (CD)
Data Carrier Detector
CTS (CS)
Clear To Send
FG
Frame Ground
9PIN D-SUB
PC side
9PIN D-SUB
ECR side
Pin No.
Signal Name
1
CD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9 (*)
RI/+5V
Signal
Setting of SP3
RI
2pin, 3pin
+5V
1pin, 2pin
SP3
䃂䇭
䃂䇭
3
RI
䃂䇭
䃂䇭
2
+5V
䃂䇭
䃂䇭
1
SP3
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