Huawei P20 - Page 67

EML-L29V100R001 Advanced Maintenance Manual V2.1
INTERNAL
2019-6-25
Huawei Confidential
Page 67 of 67
4.19.4.3 Maintenance Principle for the Main UHB Module
Signal flow in the UHB B7/B38/B40/B41 reception circuit: U3301 ← U3901 ← U3601 ← U3501 ←
U3701 ← Z3701 (diplexer) ← J3703 ← antenna spring
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