LG GD580 Service Manual page 144

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 4-18-4
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Only for training and service purposes
Figure 4-18-4. Control Signal
Similar ?
Yes
Control Signal is O.K.
Check next stage
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4. Trouble Shooting
TP Command
MODE=4
WTXC=9750, 1,754,643,418,568
SYCT=9750
No
Download the SW
If signal is not OK even after
downloading, Change the U201
LGE Internal Use Only