LG C1100 Service Manual page 55

4. Trouble Shooting
(3) Checking PLL Control Signal
Test Points
Checking Flow
Check RF_PWR_DWN.
Waveform
Figure 4-11.
Level is High?
Yes
Similar?
Yes
Control Signal is OK.
See next Page to check
ANT SW & Mobile SW
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S_DATA
S_CLK
S_EN
RF_PWR_DWN
No
Download the SW
No
Download the SW