Rf Unit; Circuit Diagram - Huawei Y300 Maintenance Manual

Y300 Maintenance Manual
Signal Symbol
SDC3_DATA0
SDC3_DATA7
SDC3_DATA6
SDC3_DATA5
SDC3_DATA4
SDC3_CLK
SDC3_CMD
VREG_EMMC_2P85 Flash memory power supply
VREG_S3
MSM_RESOUT_N
VPH_PWR

9.3 RF Unit

Circuit Diagram

Figure 9-21 shows the transceiving circuit diagram of the RF unit.
Issue 1.0 (2013-01-24)
Description
Data cable
Data cable
Data cable
Data cable
Data cable
Clock
Command
Power supply
Reset signal
2.85 V system power supply,
supplying power to the
DC/DC chip
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9 Principles and Failure Analysis
Reference Measurement or
Waveform
None
None
None
None
None
None
None
2.85 V
1.8 V
None
None
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