Samsung GT-E2370 - Page 50

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Level
3
Repair
8-30
This Document can not be used without Samsung's authorization
8-3-12.
GSM
900
Transmitter
TX ON
(5
Level)
Yes
P
AM
100
Pin
17
≥
30
dBm
(
TP:C107 using
spectrum analyzer)
Resolder L100, C107
yes
Check PAM100
P
in
4(H
≥
2.4
V)
Pin
5(L
≤
0.4
V)
Pin
6(L
≤
0.4
V)
No
PAM100 Pin
27
≥
-4
dBm
(
TP:L117, C158 using
spectrum analyzer)
No
Yes
Check ANT Switch
control circuit
Change or Resolder
P
AM
100
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 pin2
7
≥
-4
dBm
(
TP:L117, C158 using
spectrum analyzer
Resolder or Change
L117, C158
Yes
No
Check
&
Resolder
C211,C212,C217,C218,L200,
And PMU Part and UCP20
0
Yes
END