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Level
3
Repair
8-31
This Document can not be used without Samsung's authorization
8-4-5.
GSM
850/900
TX
**
If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Change Main PBA
Tx ON
(
Level
:5)
Battery voltage:3.8V
Yes
No
Check RFS100,L101,L100,
L103,C146
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
NORMAL CONDITION
catch the channel?
Yes
No
Check PAM100,C1
12,
L104,R101
Check the connection
C1
12,
L104,R101
Yes
No
Put more lead solder
each terminal
Check the voltage
C1
39
≥
3.0V
?
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