Samsung GT-S5830B, Руководство по обслуживанию

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Level 3 Repair
8-44
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8-4-10. WCDMA Band2 TX (S5830L only)
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Tx ON
Battery Voltage: 3.8V
CONTINOUS TX ON CONDITION
TX POWER DAC:120 CODE APPLIED
CH : 9800
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Check L112 = 24 dBm?
The End
Check PAM100 PIN26
OUTPUT(RF CONN.)
With HP8960 >= 23dBm?
Yes
Check L129 = 26 dBm?
Check C152 = 8 dBm ?
Check
L
128 = 5 dBm?
Yes
Yes
Yes
No
No
Check the U103
Replace PAM100
Replace U102
No
No
No
Replace F103
Replace DUF101
Yes
Yes