SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-37
This Document can not be used without Samsung's authorization
Check C107
≤
-65dBm ?
8-3-12. GSM1800 RX
NORMAL CONDITION
catch the channel?
Check the voltage at
{C138 = VOUT_CHARGER ?}
& {C169, C170, C171
= VOUT_CHARGER?}
& {C137, C174 = 2.85V ?}
& {C134, C176 = 2.65V ?}
& {C136, C178 = 1.8V?}
& {C135, C175, C173 = 1.2V?}
Check the Voltage at
C102 =VOUT_CHARGER
Check component
soldering status OK at
F100
CHECK soldered
RFS100, L107,C107,L108
Resolder or change
U101, C102
Resolder or change
F100
Resolder or change
U104
Check the freq. at C123
: 26MHz ?
Change or resolder
OSC100
Check C101, L101
≥
-65dBm ?
Resolder or change
C101, L101
GSM1800 Receiver is O.K?
Resolder or change
UCP300
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check F100 PIN 18, 19
≥
-65dBm
Resolder or change
F100
NO
YES
Summary of Contents for Galaxy S II GT-I9100
Page 104: ...www s manuals com ...
