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5. TROUBLE SHOOTING
5.12.RF Troubleshooting
5.12.1 General Circuits Troubleshooting
LGE Internal Use Only
General Circuits
1. Set HP8960 as below
Active Cell(GPRS)
62ch, 5level (TCH)
62ch, -60dBm (BCH)
2. Establish Spectrum Analyzer
& Oscilloscope
Check
Power Circuit
YES
Check
DCXO Circuit
YES
Check
RF Switch Circuit
YES
General function is OK.
Fig 1 Troubleshooting flowchart of general circuits
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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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Troubleshooting
