Bt/Wifi - Samsung Galaxy Grand 2 Repair Manual

BT/WIFI

Step
Confirm the defect symptom
1
(Check the turned on BT/WIFI & connected device)
Check the BT/WIFI Ant. & Ant contact.
2
(Rear cover Ant. & ANT201)
Power on with a power supply
3
(power supply voltage : 3.8V)
Check the voltage of C201,C200,C222
4
Notice. It should be measured when the BT/WIFI
path is activated on
Check the clock of C203
5 Notice. It should be measured when the BT/WIFI is
activated on
Check the status(crack, missing, Corrosion..etc) of
RF components.
C238, L212, ,C237 (ANT Matching)
6
F201,F200,C228 (filter and filter matching)
Notice. It should be measured when the BT/WIFI
path is activated on
Service Excellence Beyond Imagination
Check point Result value
Turned on
Turned off
Broken, dust, corrosion
Normal
-
C201 = 1.3V
C200 = 3.0V
C222 = 1.8V
If not the correct value
C203 = 48MHz
(Same signal compared
with a good PBA)
If not the correct value
Abnormal status
(compared with a good
PBA)
If not the correct value
Defect point
Go to the next step
Turn on
Ant & ANT201
Go to the next step
-
Go to the next step
PMIC (U401)
Go to the next step
OSC200
RF components.
BT/WIFI IC
(U201)
SWA-CS Content Innovation