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Problem:† A serial receipt printer outputs garbage or random characters onto the receipt paper when connected to a new computer
Solution:† The serial settings between the host (usually a computer) do no match the serial settings on the printer.† Most receipt printers from the factory will have the following serial settings:
- 9600 baud rate/bits per second
- 8 data bits
- 1 stop bit
- No parity
- Hardware or DTR/DSR flow control
Printer serial settings: †If you have switched an existing serial printer to a new computer system you can verify the printerís serial setting via a self-test.† A self-test will print out the serial setting of the printer.† To perform a print self-test turn off the printer.† Hold down the Feed button and while holding the Feed button turn the printer ON.†† A list of the printerís current serial settings should print onto the receipt paper.† Power cycle the printer to place the printer back into a normal printing state.
Computer/host serial settings:
- You can check serial settings on a Windows serial port by going to Control Panel.†
- Double-click System and select the Hardware tab.†
- Click Device Manager and scroll down to Ports.†
- Click theĒ +Ē next to Ports to display all parallel and serial ports.† A list of all the computerís serial ports will be displayed (Serial ports show up in Device Manager as COM ports).†
- Double-click the COM port and select the Port Settings tab.† Check the computerís serial settings against the printerís self-test.
- †If the settings do not match you can change the settings on the computer in the Ports tab to match the printer.
- †Once the settings on the computer have been set to a match the printer click OK.
- †Try printing a receipt through your software.†
If there is still garbage printing on the receipt please contact technical support for assistance.