Maintenance Principle (Transmission) - Huawei P20 Maintenance Manual
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Also See for P20:
- User manual (149 pages) ,
- Basic manual (141 pages) ,
- User manual (129 pages)
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4.17.2 Maintenance Principle (Transmission)
Signal flow in the B1/B2/B4 transmission circuit: U3301 → U3501 (MB module) → U3701 (DPDT) →
Z3701 (diplexer) → J3703 → antenna spring
Signal flow in the B5/B8 transmission circuit: U3301 → U3401 (LB module) → U3702 (DPDT) → Z3701
(diplexer) → J3703 → antenna spring
2019-6-25
EML-L29V100R001 Advanced Maintenance Manual V2.1
Huawei Confidential
INTERNAL
Page 56 of 67
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