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Level 3 Repair
8-4-9. WCDMA Band8 TX
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
CONTINOUS TX ON CONDITION
TX POWER DAC:120 CODE APPLIED
CH : 3013
Tx ON
RBW : 100KHz
VBW : 100KHz
Battery Voltage: 3.8V
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Yes
No
Check C158 = 8 dBm ?
Check the U103
Yes
No
Check C136 = 26 dBm?
Replace U102
Yes
No
Replace DUF100
Check L105= 26 dBm?
Yes
No
Replace PAM100
Check PAM100 PIN26
OUTPUT(RF CONN.)
With HP8960 >= 23dBm?
Yes
The End
8-43
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
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