FLY FS501, Руководство по обслуживанию, Страница: 24 / 29

FLY SERVICE SUPPORT
2) surrounding environment is bad, such as plant, garage, etc. FM signals itself is weak or no
FM signals source
3) FM antenna circuit exists poor soldering or short circuit, lead to unable to receive FM
signals or FM signals leak
4) software reason
2，FM without sound reasons or murmur
1) this FM radio frequency is invalid
2) FM weak signal
3） related component bad-welding
4) headphone was not put in place
5) whether headphone socket shrapnel contacts with the mainboard well
6) whether headphone socket welding is OK
3，FM module operation failed
1）Check whether the I2C and CLK signal are normal or not
2）Software fault
3.2.5 Camera fault
Connect with the CPU through a dedicated Camera IF port. Camera control is done through the I2C
bus. Camera common fault and why:
1, Camera initialization failed, could not enter the Camera the main interface
1) Camera poor welding or poor contact
2) the Camera Ontology failure
3) Camera Power supply is not normal (Weld, or short-circuit led to)
4) related components welding problems
2, Camera Preview shows blurred screen or color is not normal