LG C1100 Service Manual page 47

4. Trouble Shooting
(3) Checking PLL Control Signal
Test Points
Checking Flow
Waveform
Figure 4-4.
Check RF_PWR_DWN.
Level is High?
Check TP
Check if there is
Any Major Difference
Refer to Graph 3-1
3-2
Control Signal is OK
See next Page to check
ANT SW & Mobile SW
- 46 -
S_DATA
S_CLK
S_EN
RF_PWR_DWN
No
Download the SW
Yes
No
Download the SW
Similar?
Yes