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Level 3 Repair
8-39
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8-4-6. GSM850/900 TX
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Check R106 >= 13dBm?
Check PAM100 PIN26
OUTPUT(RF CONN.)
With HP8960 >= 33dBm?
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 : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Содержание GT-S5830
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