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4. TROUBLE SHOOTING
4.2.2 RF Transmitting Path Trouble Shooting
5
SW400
FL401
U401
U400
LGE Internal Use Only
3
U402
4
X400
1
U403
U404
2
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START
HP8960 : Test mode
37 CH, 5 level setting (TCH)
37 CH, -60dBm setting (BCCH)
Spectrum analyzer setting
Oscilloscope setting
1. Check
Regulator Circuit
(U403,U404)
2. Check
DCXO Circuit
(X400)
3. Check
FEM Circuit
(FL400)
4. Check
Transceiver Circuit
(U401)
5. Check
Mobile Switch
(SW400)
Re-download SW & CAL
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Only for training and service purposes
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Table of Contents
Troubleshooting
