Blu Life Play X, Service Manual, Page: 8 / 27

8 / 27
2.1.2.2 Maintenance Procedures of the Transmitting Part
（
NO launch
）
Connect the PC and the phone with maintenance line,
then making the phone into the RF state with META software
Check Transceiver to
see if IO signals exist.
Check the PA output to
see if there is RF signal
Y
Check CPU
N
Check RF coaxial
switch or matching
network.
Y
Check the
Transceiver to see if
there is RF signal
N
CheckVBAT,PA_EN,
BANDSW_DCS,VAP
Replace PA
Y
Check CPU
Y
Check Transceiver if LE
、
SCLK/SDAT
、
RFVCOEN
、
VCXOEN have the
correct signal .
N
N
N
N
Y
Replace Transceiver