Samsung GT-B7702 Service Manual page 59

9-2-6. PCS TX
1)Master
TX ON (0Level)
Yes
MOD100 pin12
≥ 25dBm
Yes
MOD100 pin20
≥ -4 dBm
Yes
Check U200
Voltage path
Yes
Check TCX200
19.2 MHz signal
Yes
Check U200
END
No
No
No
Check and Resolder
C130, L113, C137
No
Change or Resolder
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Resolder
RFS100,C117,L105
No
No
VBATT = H (3.6V),
BS1 = H ( ≥ 1.2V)
BS2 = H ( ≥ 1.2V)
Yes
Check C130, L113,
C137
No
Yes
TCX200
9-32
Flow Chart of Troubleshooting
Yes
END
Check Battery and
control circuit path
Change or Resolder MOD100
Change or Resolder
components
C130, L113, C137
Change or Resolder MOD100