Trouble Shooting Of Transmitter Part - LG KE600 - Cell Phone Service Manual

5. Trouble shooting

5.15.7 Trouble Shooting of Transmitter Part

Checking Flow Checking Points
Setup Test Equipment
Cell Power : -7 4dBm
EGSM CH30
DCS CH699
FL601
U601
Check point
U602
X601 VCTCXO
Check point
U602 PLL Control
Figure 17. RF Part
Check point
point TX I/Q Signal
Check point point
Transceiver Output
Check point
PAM Control Signal
Check SW601
FEM & Mobile S/W
Re-Download S/W & RF CAL
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