LG AT&T GR500 Service Manual page 137

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4. TROUBLE SHOOTING
PIN10 (STROBE)
PIN11 (DATA)
PIN12 (CLK)
PIN10 (STROBE)
PIN11 (DATA)
PIN12 (CLK)
Check PIN10,PIN11, and
PIN12. Check shape
and pk-pk level
Refer to Figure 4-16
LGE Internal Use Only
Figure 4-15. Control Signal
No
Similar ?
Yes
Control Signal is O.K.
Check next stage
- 138 -
TP Command
MODE=4
WTXC=9800, 1,890,903,542,557
Download the SW
If signal is not OK even after
downloading, Change the U103
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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