Keypad - Huawei Y511-U030 Repair Manual

XXXX The basic version Repair Manual

9.4.2 Keypad

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Circuit Principle Diagram
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Circuit analysis:
Y511-U00 has a power button, button under the volume, 3 physical buttons. The remaining
three for the virtual keys. The power button please start circuit reference before.
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Fault analysis and treatment process:
1. Key failure: check the main side key FPC welding and DOME and PCB are dirty;
2. If no dirt, may be the main chip has a problem, need to be welded or replacement of the
main chip.
2013-09-25
V1.0
华为机密，未经许可不得扩散
internal public
第 63 页，共 79 页