LG GS290 - Trouble Shooting of Transmitter Part

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4. TROUBLE SHOOTING
GS290 Operational Description Revision B
LG Electronics 93/136 LGE Property
4.13 Trouble shooting of Transmitter part.
Figure 1. Main PCB
ྙ
ྛ
ྚ
Checking Points
ྜ
ྜྷ
ྞ
Check point ྙ
D
CXO
Check point ྚ
PLL Control
Setup Test Equipment
Cell Power : –74dBm
EGSM CH30
DCS CH699
Check point ྛ
TX I/Q Signal
Re-Download S/W & RF CAL
Check point ྜ
Transceiver
Check point ྜྷ
PAM Control
Checking Flow
Check ྞ
FEM & Mobile SW