LG GT500 Service Manual page 146

TP1 (RF_CTRL_STR1)
TP2 (RF_CTRL_DATA)
TP3 (RF_CTRL_CLK)
TP1 (RF_CTRL_STR1)
TP2 (RF_CTRL_DATA)
TP3 (RF_CTRL_CLK)
Check TP1, TP2, TP3. Check shape
and pk-pk level
Refer to Figure 4-30
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure 4-30. Control Signal
No
Similar ?
Yes
Control Signal is O.K.
Check next stage
- 147 -
4. TROUBLE SHOOTING
TP Command
MODE=4
WTXC=9750, 1,754,643,418,568
SYCT=9750
Download the SW
If signal is not OK even after
downloading, Change the U201
LGE Internal Use Only