Service Support

Instructions and self-test for Rongda Technology's RP331 80mm high-speed thermal printer

2026-01-13

Rongda Technology80mm high-speed thermal printerRP331Related instructions and self-test

I. Printer power switch, buttons, and indicator lights

The buttons and indicator panel are shown in the following figure:

80mm high-speed thermal printer

Button and indicator light function description:

????FEED button: Paper feed button

????In standby mode, pressing the paper feed button feeds paper continuously. During printing, the paper feed button is ineffective.

????Press and hold this button before powering on the printer to perform a self-test after power-on.

????POWER indicator "O" button: Power on/off button

The power switch is used to turn the printer on and off. Press and hold "O" to turn on the printer; press and hold "O" again while the printer is on.Turn off the printer (only turn on the switch after connecting to power).

????Indicator light (orange): Status indicator light

????If a paper shortage, paper jam, printhead overheating, printhead error, or other abnormality occurs, the printer buzzer will sound an error (as shown in the table below), and the power indicator light will flash. Under normal conditions, the light will remain constantly on.

????Buzzer error status and cause:

Rongda Technology

II. Printer Self-Test

The self-test function checks whether the printer is working properly. If it can correctly print the self-test checklist, it means that the printer is working properly except for the connection interface with the host computer. Otherwise, it needs to be repaired.

The self-test will print out the software version number, print density, interface type, and English and some Chinese characters in sequence.

The self-test procedure is as follows: After connecting the printer, press and hold the paper feed button and then turn on the printer power. The printer will first perform a reset test. After the reset is complete, release the paper feed button in less than 5 seconds. At this time, the printer will perform a self-test and print out a self-test checklist.