The full CHECKING FLOW of TX Trouble
Check JRF101 with RF cable
Signal is OK?
Check TP8,9,10
Control Signal
is OK?
Check U102
Signal is OK?
Mobile SW & SAW filter is OK.
Check Antenna
Signal is OK?
Change the PCB
88
No
Replace mobile SW (JRF101)
Yes
Yes
No
Check U103
No
No
Replace U102
Replace U102