LG KS360 Service Manual page 98

5.15.3 Checking PAM Control Signals
TQM7M5005
15
PGND
8
GND3
11
GND2
14
GND1
9
BY_CAP2
13
BY_CAP1
10
GSM850_900_OUT
12
DCS_PCS_OUT
MODE
GMSK
8PSK
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Only for training and service purposes
U600
7
GSM850_900_IN
6
TX_EN
5
VRAMP
4
VBATT
3
BS
2
MODE_SELECT
1
DCS_PCS_IN
C636
DNI
PAM Control Signals
Transceiver Output
MODE
LOW
HIGH
PAM Mode Operation
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5. Trouble shooting
R609 1
R610 1
R611 10K
R612 1
R613 1
R614 1
C638
C637
DNI 47p
PA_MODE
TX RAMP
PA_EN
PA_LEVEL
Ramp Burst Control
Control Amp bias
TXLB
PA_EN
PA_EN
TX_RAMP
TX_RAMP
PA_BAND
PA_MODE
PA_MODE
TXHB
TXON_PA
HIGH
HIGH
LGE Internal Use Only