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