LG KG800 Service Manual page 66

(4) Checking PAM Control Signal
TEST POINT
Waveform
Checking Flow
Check TX_RAMP and PA_EN
Check if there is Check if there is
Any Major Difference or not Any Major Difference or not
Refer to Graph 4 - Refer to Graph 4
C426
Graph 4-7
Similar? Similar? Similar?
7
Yes Yes Yes
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4. TROUBLESHOOTING
CIRCUIT
VBAT
C409 C410 C411 C412
VBAT
0.1u 33p 22u
3p
1
VCC3
No No
Download S/W Download S/W Download S/W Download S/W
S_DATA
S_EN
S_CLK
SYNTH_EN
RF_PWR_DWN