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TMDSEMU560V2STM-UE: TMDSEMU560V2STM-UE故障

Part Number: TMDSEMU560V2STM-UE

TMDSEMU560V2STM-UE故障现象描述:共总采购11台,其中一台用ccs通过560连接Tda4。无法成功连接。更换线束也无法连接。换一个560是可以正常连接和调试的,所以怀疑这个产品质量不合格,请求返厂测试维修。请麻烦告知如何退回测试维修,谢谢