Lenovo A516 Service-Handbuch - Seite 27

Blättern Sie online oder laden Sie pdf Service-Handbuch für Mobiltelefon Lenovo A516 herunter. Lenovo A516 40 Seiten.
Auch für Lenovo A516: Schnellstart-Handbuch (6 seiten), Benutzerhandbuch (35 seiten), Wichtige Produktinformation Handbuch (20 seiten)

Lenovo A516 Service-Handbuch
Repair Manual of Lenovo A516 Mobile Phone

4.2 Production calibration

4.2.1 AFC calibration

Fault: AFC calibration Fail.
Reason: RF test cable is not connected well during calibration; TCXO is oppositely pasted
or in cold solder joint.
Shooting:
AFC calibration
Fail
Check whether RF cable and
fixture is well connected?
Check
whether
( U2104 ) is oppositely
pasted?
Check
whether
( U2104 ) is in cold solder
joint?
Recalibrate
Check whether there is power
output from PA (U2102)
Notes: Remember to recalibrate after replacing elements.
N
Y
Y
TCXO
N
Y
N
TCXO
Y
N
Reconnect and calibrate
Re-weld U2104
Re-weld U2104
Replace PA(U2102)
27