HUAWEI TECHNOLOGIES CO., LTD.
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4.14.2 Troubleshooting FM Faults
Because FM IC is a integration IC, so if it can’t get any stations. Maybe FM IC poor soilder or pin s
connect, and earphone jack poor connect. So first check that jacks good contact. After check the FM IC
whether good solder.
4.14.3 Maintenance Instances
FM can’t get any stations. And can fine the I/O port one pin poor soldered. The problem was analyzed
by repair. The pin is FM_ANT signal line. And re-solder the problem was removed
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