TroubleshootingChapter 4
42 PK80Series 80-Column User’sManual
The printer has a 25-pin connector with the following pinout designations
and signal mnemonics:
PrinterCommunications Connector Pin-Outs
DB25 SignalName Type I/O Description
20 NC ——— ——— NoConnection
4CTS (Clear To Send) RS-232 IN Wake up
2RXD (Receive Data) RS -232 IN Printer’s RxD
3TXD (TransmitData) RS-232 OUT Printer’s TxD
5RTS (Ready To Send) RS-232 OUT Printer’s RTS
9HHC_Charge Power OUT 11–15 V, up to1 A per contact
7GND Power OUT SG (SignalGround)