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Level 3 Repair
8-4-2. GSM900 RX
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
RX ON(Call Connected)
Amplitude : -50dBm
Catch the channel?
RFS100 ≥ -50dBm
Check the connection
Check the connection
Change Main PBA
RF Input : 62 CH
Normal condition
No
PAM100 check
Yes
C146,L103
Yes
F100 check
C119 ≥ 3.3V ?
Yes
C114,C118.L105
Yes
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Yes
Check Ant100,ant101
L100,L101,C105
No
Check RFS100,L100,
L101,C105
No
Put more lead solder
each terminal
No
Check C119,L109
No
Check F100,C114,C118.L105
8-26
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