2023年12月6日发(作者：濯旎旎)

mate20 pro TOP故障维修指引V1.0返回目录GPS故障维修流程图GPS故障全景图实物点测图TOP面L58031L5802J5807J560124C561651目检U5100及相关元器件外观是否OKN更换不良元件1.C5204二极体为0.27VY2.C5223N排除小料损坏后更换U51001.量测VDD_PMU_1P15(C5204)VDD_PMU_RFLDO3(C5202)二极体是否OKY二极体为0.34VC5601U56022.C5221/C5255二极体为0.39V/0.53VC5614Z56042.量测VDD_PMU_CLDO1(C5223)VDD_PMU_CLDO2(C5221)VDD_PMU_CLDO3(C5225)二极体是否OKYN排除小料损坏后更换U5100C5221C5255U5100L5614L5615BOTTOM面GNSS_RF_RFI_L1GNSS_RF_RFI_L5C56183.量测VDD_PMU_LDO_TCXO(R5102)XIN(C5103)GNSS_L5_LNA_EN(C5603)二极体是否OKYN排除小料损坏后更换相关通路器件TCXO5101/U5100/U5602/U5601Z5601Z5603L5607231.C5202二极体为0.48V4L5935L5934C59083N更换接收通路不良器件在非信令模式下模拟GPS接收测量GPS线路通路是否OKJ5911C5607YZ5602L5605L5608U5601依次更换U5100/U3003.C51035TCXO5101二极体为左0.64V/右0.76V3.C5603二极体为0.43V3.R5102二极体为左0.55V/右0.55V返回目录2018/11/26第1页，共1页

2023年12月6日发(作者：濯旎旎)

mate20 pro TOP故障维修指引V1.0返回目录GPS故障维修流程图GPS故障全景图实物点测图TOP面L58031L5802J5807J560124C561651目检U5100及相关元器件外观是否OKN更换不良元件1.C5204二极体为0.27VY2.C5223N排除小料损坏后更换U51001.量测VDD_PMU_1P15(C5204)VDD_PMU_RFLDO3(C5202)二极体是否OKY二极体为0.34VC5601U56022.C5221/C5255二极体为0.39V/0.53VC5614Z56042.量测VDD_PMU_CLDO1(C5223)VDD_PMU_CLDO2(C5221)VDD_PMU_CLDO3(C5225)二极体是否OKYN排除小料损坏后更换U5100C5221C5255U5100L5614L5615BOTTOM面GNSS_RF_RFI_L1GNSS_RF_RFI_L5C56183.量测VDD_PMU_LDO_TCXO(R5102)XIN(C5103)GNSS_L5_LNA_EN(C5603)二极体是否OKYN排除小料损坏后更换相关通路器件TCXO5101/U5100/U5602/U5601Z5601Z5603L5607231.C5202二极体为0.48V4L5935L5934C59083N更换接收通路不良器件在非信令模式下模拟GPS接收测量GPS线路通路是否OKJ5911C5607YZ5602L5605L5608U5601依次更换U5100/U3003.C51035TCXO5101二极体为左0.64V/右0.76V3.C5603二极体为0.43V3.R5102二极体为左0.55V/右0.55V返回目录2018/11/26第1页，共1页