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4. TROUBLE SHOOTING
4.2.2 RF Transmitting Path Trouble Shooting
U404
U406
2
U404
U405
LGE Internal Use Only
1
SW401
FL401
4
U403
5
X401
U402
3
U401
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START
HP8960 : Test mode
190 CH, 5 level setting (TCH)
190 CH, -60dBm setting (BCCH)
Spectrum analyzer setting
Oscilloscope setting
1. Check
Regulator Circuit
(U405,U406)
2. Check
DCXO Circuit
(X401)
3. Check
FEM Circuit
(FL401)
4. Check
Transceiver Circuit
(U403)
5. Check
Mobile Switch
(SW401)
Re-download SW & CAL
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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Table of Contents
Troubleshooting
