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5.15.2 Checking Transceiver Output Signals
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
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1R612
1R610
C636
DNI
1R613
10KR611
C638
47p
R614 1
DCS_PCS_IN
1
DCS_PCS_OUT
12
GND1
14
GND2
11
GND3
8
7
GSM850_900_IN
10
GSM850_900_OUT
2
MODE_SELECT
15
PGND
TX_EN
6
4
VBATT
VRAMP
5
TQM7M5005 U600
BS
313
BY_CAP1
BY_CAP2
9
DNI
C637
R609 1
PA_MODE
TXLB
TXHB
PA_BAND
PA_EN
TX_RAMP
TXLB
TXHB
Transceiver Output Circuit
Transceiver Output Operation
MODE Transceiver Output
GSMK Fixed
8PSK Ramp Burst Control
TXHB
TXLB