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Flow Chart of Troubleshooting
9-29
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9-15. GSM850 Receiver
RX ON
Sector PWR=-50dBm
Resolder or change L102,L103,L104
Change U101 & UCP301
MOD101 Pin 2
>= -60dBm
Check MOD101
Truth Table
Pin 3 : LOW
Pin 4 : HIGH
Pin 5 : HIGH
Pin 6 : LOW
No
Yes
Resolder RFS101,C1024,L101
Resolder or change
MOD101
No
MOD101 Pin
12,13
Yes
U101
Pin 50,51
>= -75dBm
No
Yes
Yes
Содержание GT-B7620
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