Wcdma Band1 Tx - Samsung GT-S5570 Service Manual

8-4-8. WCDMA Band1 TX

**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Battery Voltage: 3.8V
Check C144 = 8 dBm ?
Check C125 = 5 dBm?
Check C126 = 26 dBm?
Check L109 = 24 dBm ?
Check PAM100 PIN26
OUTPUT(RF CONN.)
With HP8960 >= 23dBm?
The End
Tx ON
Yes
Yes
Yes
Yes
Yes
Yes
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TX POWER DAC:120 CODE APPLIED
No
Check the U101
No
Replace F102
No
Replace PAM101
No
Replace DUF100
No
Replace PAM100
8-57
Level 3 Repair
CONTINOUS TX ON CONDITION
CH : 10700
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB