Gsm850 Transmitter - Samsung GT-B7610 Service Manual

9-9. GSM850 Transmitter

Cell Power : -40dBm
Normal Condition Catch the
Check U100 & UCP300
TX ON
(PCL 5 level)
channel
MOD100 Pin 2
>= 5dBm
No
MOD100 Pin 11
>= 5dBm
No
U100 Pin 55
>= 5dBm
No
END
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Yes
Check MOD100
Truth Table
Yes
Pin 3 : HIGH
Pin 4 : LOW
Pin 5 : LOW
Pin 6: LOW
YES
Yes
9-19
Flow Chart of Troubleshooting
Resolder RFS100,C1014,L103,L132
L103
Resolder or change MOD100
Resolder or change C119