Samsung galaxy Grand i9082 WCDMA Band8 / GSM 900 RX Network not working Solution
Samsung galaxy Grand i9082 WCDMA Band8 / GSM900 RX Network not working Solution Schematic, Diagram,Circuit
Samsung galaxy Grand i9082 WCDMA Band8 / GSM900 RX Network not working Solution Step by Step
Step 1
NORMAL CONDITION
catch the channel?
Step 2
Check L101 ≤ -65dBm ?
CHECK soldered
RFS100, L101, L144, C152, C153
Step 3
Check the Voltage at
C100 = VBAT_RF ?
Resolder or change
U101, C100
Step 4
Check L105, L106
≥ -65dBm ?
Resolder or change
L105, L106
Step 5
Check component
soldering status OK at
DUF100
Resolder or change
DUF100
Step 6
Check DUF100 PIN 1, 8
≥ -65dBm
Resolder or change
DUF100
Step 7
Check the voltage at
{C139,C138 =
VOUT_CHARGER ?}
& {L402
= VOUT_CHARGER?}
& {C136, C137,C453 = 2.7V ?}
& {C142, C143,C453 = 2.7V ?}
Resolder or change
U104
Step 8
Check the freq. at
OSC100
PIN1,3 : 26MHz ?
Change or resolder
OSC100
Step 9
WCDMA band8/GSM900
Receiver is O.K?
Resolder or change
UCP300
END
samsung i9082 WCDMA Band8 / GSM900 RX Solution
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