FLY SERVICE SUPPORT
TROUBLE SHOOTING
Test flow chart of test SIM card
Cannot read SIM
Check if pins of
SIM
ok
or
clean?
Clean SIM pins or
replace SIM socket
Is it ok?
Check if SIM
is invalid?
Use valid SIM
Is it OK?
Replace
PCBA
End
Please repair PCBA with multimeter or oscilloscope, and
stable power supplier.
According to schematic:
1.
To check J702/J703 with mulitmeter comparing to one
good sample. If not ok, replace it.
2.
To check U301 and its power supplier whether it is ok. If
not ok, replace it.
3.
If all not ok, replace U101 finally.
End
End
Yes
Yes
Yes
No
No
No
No
Содержание FS504
Страница 1: ...FLY SERVICE SUPPORT FS504 Service Manual...
Страница 8: ...FLY SERVICE SUPPORT...
Страница 9: ...FLY SERVICE SUPPORT...
Страница 10: ...FLY SERVICE SUPPORT...
Страница 11: ...FLY SERVICE SUPPORT CIRCUIT INSTRUCTION PCBAA Side...
Страница 12: ...FLY SERVICE SUPPORT SYSTEM BLOCK DIAGRA...
Страница 13: ...FLY SERVICE SUPPORT UNIT CIRCUIT PRINCIPLE INTRODUCTION CPU MT6580 part circuit...
Страница 14: ...FLY SERVICE SUPPORT...
Страница 15: ...FLY SERVICE SUPPORT...
Страница 16: ...FLY SERVICE SUPPORT...
Страница 17: ...FLY SERVICE SUPPORT...
Страница 18: ...FLY SERVICE SUPPORT PMU MT6350 part circuit...
Страница 19: ...FLY SERVICE SUPPORT MEMORY part circuit...
Страница 20: ...FLY SERVICE SUPPORT LCD circuit...
Страница 21: ...FLY SERVICE SUPPORT WIFI BT GPS FM RF FM...
Страница 22: ...FLY SERVICE SUPPORT charge circuit...
Страница 23: ...FLY SERVICE SUPPORT Audio PA circuit...
Страница 24: ...FLY SERVICE SUPPORT RF circuit...
Страница 25: ...FLY SERVICE SUPPORT...