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8-3-2-3. GSM900 Receiver
RX ON(Call Connected)
TCH Channel : 62 Ch
BCH PWR = -60dBm
Normal condition
Catch the channel?
Yes
RFS100
Pin 2
>= -60dBm
Yes
PAM100
Pin 15
>= -70dBm
Yes
PAM100
Pin 17
>= -70dBm
Yes
F102
Pin 8,9
>= -75dBm
Yes
Check UCP200
END
No
No
No
No
No
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Check Ant and Resoleder
L100,C124,C117,L103,C120
Resolder RFS100,L104,L101
Check PAM100
Check F102,L112,C142
Check C144,L113,C145
(crack,open,etc)
8-33
Level 3 Repair
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