Blu Aria - Connectivity Troubleshooting

29
N0/weak signal trouble shooing
No or weak signal
Inspect the antenna and
antenna connector to see
if there’s any distortion
Replace the defective
components.
Put a false antenna at RF PA
IC to see if there’s any signal
Replace RF PA IC.
Make a false antenna at
Z501, check if there’s
any signal
Saw filter is damaged,
replace it.
Replace U501/26M
oscillator to check if
the problem is solved.
Resolder or replace
CPU MT6250
END
YES
NO
YES
NO
YES
NO
OK