The fault of printer cable leads to printing garbled code, and sometimes the open circuit or short circuit of printing cable and its interface may also lead to printing garbled code. You can execute the command "dir >: Prn" to detect whether the printer cable is faulty.

There is a hardware fault in the printer itself. You can judge whether there is a hardware fault in the printer through the printer self-check (different brands of printers have different self-check methods, please refer to the printer manual). If it's really the printer, it has to be repaired.

The printer is out of memory, and it is possible to print out garbled codes if the file is too large at one time. The best way is to expand the printer's memory, but this situation is rare, and it often happens in printers with small memory in the early days.

Jiabo bill printer is produced by Sun Yat-sen University Shengyuan and Qiu Jin Foundation. Zhuhai Jiabo brand is a well-known brand of POS commercial paper printer in China. From 2005 to 20 10, the company's sales of 80mm, 76mm and 58mm miniature bill printers ranked first in the country. It has the largest number of customers and sales in China, Hongkong and Taiwan Province Province. In the fields of retail, catering, tax control and special commodities, this technology has become a leading well-known brand of bill printers in China.