Appendix A - Troubleshooting

Serial Interface The figure below displays the cable wiring Cable Wiring required to use the printer's RS-232 serial

interface.

Host

DB-9

DB-9

 

 

Printer

 

Pin #

Pin #

 

 

 

 

 

 

 

N/C

1

1

 

 

+5 Volts*

RxD

2

2

 

 

TxD

TxD

3

3

 

 

RxD

DTR

4

4

 

 

N/C

GND

5

5

 

 

GND

DSR

6

6

 

 

RDY

 

 

RTS

7

7

 

 

N/C

CTS

8

8

 

 

RDY

 

 

RI

9

9

 

 

N/C

 

 

 

 

 

 

Female DB-9 to Male DB-9

Cable P/N 300017-006 (6') or 300017-010 (10')

Host

DB-25

DB-9

 

 

Printer

 

Pin #

Pin #

 

 

 

 

 

 

 

N/C

8

1

 

 

+5 Volts*

RxD

3

2

 

 

TxD

TxD

2

3

 

 

RxD

DTR

20

4

 

 

N/C

GND

7

5

 

 

GND

DSR

6

6

 

 

RDY

 

 

RTS

4

7

 

 

N/C

CTS

5

8

 

 

RDY

 

 

RI

22

9

 

 

N/C

 

 

 

 

 

 

Female DB-25 to Male DB-9

Cable P/N 300018-006 (6')

*+5 volts at 150 mA for external device (e.g. KDU or scanner)

26

980348-001 Rev. A

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Zebra Technologies 2844 user manual Host