加拿大采购需求：一维二维条码扫描器、一维条码扫描器、二维条码阅读器、二维条码扫描器、二维条码扫描器蓝牙、二维条码扫描器模块

I've been experiencing issues with my scanner, as it's not able to read any of my barcodes for over three months now. This has been quite frustrating, and I'm looking for some guidance on how to troubleshoot or resolve this problem. Could you please provide me with any recommendations for steps I can take to fix the scanning issue? Additionally, if there are any common faults or possible repairs needed for this type of scanner, I would appreciate your insights. Thank you!