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10-2 (RS232C I/F) Printer I/F pin assignment.
Is the correct cable used? TXD 2 pin,
RXD 3 pin,
Yes No SSD 11 pin,
DTR 20 pin,
Change I/F cable DSR 6 pin.
Is ALARM LED blinking?
No Yes
See tables 6.2 and 6.3 for the troubleshooting.
Make sure of the parameters for RS232C in the menu are correct.
Baud rate
Bit length
Parity
Protocol
Busy signal and its polarity
Remedied?
No Yes
End
Is + 8V supplied on Driver Board?
Yes No
Remove RS232C I/F Board
Is the + 8V supplied on the Driver Board?
No Yes
Replace RS232C I/F Board
Replace Driver Board
Driver Board
CN2
20••••••••••••••••••
0V (pin10)
+8V (pin20)