LG KS660 - Transmitter Part

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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
4.12. Trouble shooting of RF Block 2 (SGR) Transmitter part.
Figure 15. Main PCB
Figure 16. Main PCB
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Checking Points
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Check point ①
DCXO
Check point ②
PLL Control
Setup Test Equipment
Cell Power : –74dBm
EGSM CH30
DCS CH699
Check point ③
TX I/Q Si
g
nal
Re-Download S/W & RF
CAL
Check point ④
Transceiver
Check point 
PAM Control
Check 
FEM & Mobile
SW
Checking Flow
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