Samsung GT-S5830 - Gsm850;900 Tx

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Level
3
Repair
8-39
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8-4-6.
GSM
850/900
TX
**
If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Check R106
>= 13
dBm?
Check PAM100 PIN26
OUTPUT(RF CONN.)
With HP8960
>= 33
dBm?
The End
Yes
Replace PAM100
No
Tx ON
(
Level
:5)
Battery voltage:3.8V
Yes
Yes
No
Check The U103
CONTINOUS TX ON CONDITION
TX POWER DAC:
14500
CODE
APPLIED
GSM850 CH
: 190
GSM900 CH
:62
RBW
: 100
KHz
VBW
: 100
KHz
SPAN
:10
MHz
REF LEV.
:10
dBm
ATT.
:20
dB