Advertisement
Level 3 Repair
8-3-17. EGSM 900 RX
NORMAL CONDITION
Catch the channel?
YES
Check F100
Pin#3
-55dBm
YES
Check F100 VBAT
Pin#9
2.5V
YES
Check F100 ENABLE
C142,C143
0V
C144,C145
2V
YES
Check U101
Pin#48,Pin#49
-55 dBm
YES
Check TCXO CLOCK
19.2MHz @ C210
YES
Check U101
YES
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
NO
NO
RFS100,C112,C116,C103
NO
NO
NO
NO
NO
8-30
Band : GSM900
CELL POWER : -50dBm
Channel : 62CH
check ANT contact
change or re-solder
Change PBA
Change PBA
L105, L106, L107
re-solder or change
OSC100, C210
re-solder or change
U101
re-solder or change
Advertisement
