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The output voltage of X100 is 820mV
5.12.4 RF Switch (Mobile Switch) circuit
Part Description of RF Switch
SW500: Mobile Switch (RF S/W) Connector
U104: Baseband Processor including RF transceiver
Check point of RF S/W (Mobile S/W)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Fig 6 Waveform of DCXO
.
p-p
RF S/W Circuit
Is RF S/W short
between TP1 &
TP2?
YES
Check the next part
Fig 7 Debugging flowchart of RF S/W circuit
- 97 -
5. TROUBLE SHOOTING
NO
Replace
SW500
LGE Internal Use Only
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Troubleshooting
