BIXOLON service manual 7-7 RS-232C Serial Communication Problem, SRP-350/352plusA&C

SRP-350/352plusA&C

7-7 RS-232C Serial Communication Problem

RS-232C

Problem

Communication Y

Failure?

N

1. Check the connection of the RS-232C Connector and Other side

2.Check the I/F Cable whether it is open or short

3.Check the Txd, Rxd Pin on CPU

4.Check the MAX232 Driving Chip and

related Circuit on I/F PBA

5.Check whether Signal is affected by the Cable Noise

H/WN

Handshake

Y

1.Check the connection of the H/W handshaking Line and Other side (DTR/DSR)

2.Check the I/F Cable whether it is open or short

3.Confirm the H/W handshaking Protocol

End

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