Sony NWS-1510 Service Manual page 123

Appendix A: Serial Port Test Jig
This appendix describes the test jig which must be
connected to the serial port CCH.O/CH.l) of the network
station NEWS for performing self diagnostics on the serial
circuit and the testi jig which is connected to the 4-channel
interface board (optional serial port) for a similar purpose.
1) Serial board pin assignments
System unit serial port (CH.O/CH.l)
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Pin No.
Si nal I/O direction Pin No. Si nal I/O direction
l
14
2 TxD -->
15 TRxC
3 RxD
<--
16
4
RTS
-->
17
RTxC
5
CTS <--
18
6
DSR -->
19
7 GND
20 DTR
<--
8
DCD <--
21
9
22 RI -->
10 23
11
24
12 25
13
Optional serial port CCH.O-CH.3)
11
Pin No. Si nal I/O direction
Pin No. Si nal
I/O direction
1 DCD <--
11
6
DSR
-->
2 RxD <--
11
7
RTS
-->
3 TxD -->
11
8
CTS
<--
4 DTR
<--
11
9
RI
<--
5 GND
11
-->: Output signal
<--:
Input signal
NWS-1510/ 1530/ 1580
4-31
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