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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. TROUBLE SHOOTING
5.13.5. Checking PAM Control Signals
Checking Points
Figure 25. Transceiver Output
Table 4. PAM Mode Operation
HIGH
Control Amp bias
HIGH
8PSK
HIGH
Ramp Burst Control
LOW
GMSK
TXON_PA
PA_LEVEL
MODE
MODE
Figure 24. PAM Control Signals
TP1(PA LEVEL)
TP2(TXON PA)
TP3(PA_MODE)
TP3(PA MODE)
TP2(TXON PA)
TP1(PA LEVEL)
10K
R406
C429
100P
U401
TQM7M5005H
SMPY0021101
15
7
8
6
11
14
5
9
4
13
3
10
2
12
1
DCS_PCS_IN
DCS_PCS_OUT
MODE_SELECT
GSM850_900_OUT
BS
BY_CAP1
VBATT
BY_CAP2
VRAMP
GND1
GND2
TX_EN
GND3
GSM850_900_IN
PGND
47P
C433
C436
100P
C442
100P
PA_LEVEL
PA_MODE
PA_BAND
TXON_PA
LBAND_PAM_IN
HBAND_PAM_IN
TQM7M5005(5x5)
TP2(TXON PA)
TP3(PA_MODE)
TP1(PA LEVEL)
Содержание AR140B
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