Sd Card Interface - Huawei Y511-U030 Repair Manual

XXXX The basic version Repair Manual

9.4.9 SD Card Interface

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Circuit Principle Diagram
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Circuit analysis:
T card connector is connected directly to the main chip, including memory data signal, CMD
signal, GND signal power in good faith,
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Fault analysis and treatment process:
1. The first detection of the T card holder connector shrapnel is tilted, dirt etc.. To ensure
good contact connector and method.
2. check the T card hot plug
3.Multimeter is used to measure the memory seat power supply is normal.
4. these are normal, need to be replaced or welding of the main chip
2013-09-25
V1.0
detect whether the Pin is normal.
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