FLY FS501, Руководство по обслуживанию, Страница: 23 / 29

FLY SERVICE SUPPORT
lcd connector
2, LCD blurred screen and white screen. Description LCD backlight circuit OK, just shows
abnormal. The cause of the malfunction is usually:
1) LCD connector poor contact, poor welding and fixture poor contact
2) related components Weld or even tin short circuit
3) software problems
3, LCD black spots, bright spots, black lines, stripes Failure: LCD ontology bad.
3.2.4 FM
The CPU controls FM IC working condition through the I2C signal, when FM is working, should
insert headphone as its antenna. FM outputs audio signal to the CPU Codec, amplify playing or
record. FM common faults and causes:
1, FM cannot search frequency or less frequency reason:
1) headphone without inserting or not insert good