LG P7200 - Page 68

4. TROUBLE SHOOTING
- 69 -
(4) Checking PAM Control Signal
0R608
VBAT
C630
4.7u
C628
33p
C629
11
VCC_1A
VCC_1B
22
9
VAPC
GND3
14
15
GND4
GND5
16
17
ENABLE
8
GND1
12
GND2
13
BAND_SELECT
10
NA
C627
PA_BAND
PA_EN
TX_RAMP
Similar?
Yes
No
Check TX_RAMP and PA_EN
Check if there is
Any Major Difference or not
Refer to Graph 4
7
Similar?
Yes
No
Similar?
Yes
No
Check if there is
Any Major Difference or not
Refer to Graph 4
-
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TEST POINT
Waveform
Checking Flow
CIRCUIT
Graph 4-7