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Publication No. GEG-99197 May 04
7-44 TallyGenicom mL450 Laser Printer User Manual
Custom Page size and Microsoft Word, Word 2000, and Word 2003
RS-232C Serial Cable Pin Assignments
Eight pins of the 25-pin serial cable are utilized for the RS-232C standard:
RS-422 Serial Cable Pin Assignments
Five pins of the 25-pin serial cable are utilized for the RS-422 standard:
Troubleshooting
This section discusses troubleshooting error messages appearing on the printer’s control panel.
Sources of help, information and technical support are also discussed.
Control Panel Error Messages
The format of control panel error messages is:
NETx: ERROR y
Pin No. Signal Direction Description
1GND Frame Ground
2TXD Out Transmit Data
3RXD In Receive Data
4RTS Request To Send
5CTS In Clear To Send
6DSR In Data Set Ready
7 GND Logic Ground
20 DTR Out Data Terminal Ready
Pin No. Signal Direction Description
1GND Frame Ground
15 RXD - In Receive Data +
17 RXD + In Receive Data -
19 TXD - Out Transmit Data -
25 TXD + Out Transmit Data +