SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-30
This Document can not be used without Samsung's authorization
8-3-12. GSM900 Transmitter
TX ON (5Level)
Yes
PAM100 Pin17
≥
30dBm
(TP:C107 using
spectrum analyzer)
Resolder L100, C107
yes
Check PAM100
Pin 4 ( H
≥
2.4V)
Pin 5 ( L
≤
0.4V)
Pin 6 ( L
≤
0.4V)
No
PAM100 Pin 27
≥
-4
dBm
(TP:L117, C158 using
spectrum analyzer)
No
Yes
Check ANT Switch
control circuit
Change or Resolder
PAM100
Yes
Yes
Check PAM100
VBATT(pin30=3.7V)
(TP:C110) OK?
Yes
Change the UCP200
if a damaged chip.
Check VBAT
using the osciliscope
(TP:C110)
or PAM control signal
No
No
PAM100 pin27
≥
-4dBm
(TP:L117, C158 using
spectrum analyzer
Resolder or Change
L117, C158
Yes
No
Check & Resolder
C211,C212,C217,C218,L200,
And PMU Part and UCP200
Yes
END