LG GD510 - Page 86

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5. Trouble shooting
GD510 Operational Description Revision A
LG Electronics 92/113 LGE Property
5.13.4. Checking Transceiver Output Signals
Figure 20. Transceiver Output Circuit
Checking Points
Figure 21. Transceiver Output
Table 3. Transceiver Output Operation
Ramp Burst Control 8PSK
Fixed GMSK
Transceiver Output MODE
TP1(LBNAD_PAM_IN)G
TP2(HBNAD_PAM_IN)G
TP1(LBNAD_PAM_IN)G
TP2(HBNAD_PAM_IN)G
2.4p
C617
3.9p
C611
3p
C634
C604
100n
R601 10
L601
5.1n
C605
4.7n
15n
L606
R603 820
VRF_2V85
C607
220n
18n
L603
2.2p
C609
3p
C618
3.9p
C612
R605 10
26MHz
TSX-3225X601
21
3
4
GND2 HOT2
HOT1 GND1
C619 1n
U602
PMB6272
20
19
18
17
16
15
14
13
1
2
21
2
2
11
3
201
4
29
5
2
8
627
7
26
8
25
9
2
4
0
33
1
3
2
2
31
33
34
35
36
37
38
39
40
41
GND4
GND3
VDDMIX2V8
VDDTX2V8
TX2
TX1
VDDTX1V5
VBIAS
FE2
A 1EF
XA 8V
2SAIBDDV
B X1X
R
XB 1X
R
8V2GIDDDV X2XR
A
D
2XR
K
L
C 2
D
N
G
5V1
G
IDDDV X3X
R
3SYS
F
3XR
2SYS
F X
4XR
OX 4X
R
XOX 5V1A
N
LDDV
GND1
FSYS1
VDDXO2V8
EN
VDDVCO2V8
VCO_RC
VDDRX1V5
VDDRX2V8
C622
100n
100n
C623
100n
C624
VRF_2V85VRF_1V5
47nC627
100n
C628
C629
2.2p 2.4p
C616
VRF_2V85VRF_1V5
4.7n
L602
100n
C648
C649
100n100n
C650
RF_EN
RF_DA
RF_CLK
QX
Q
IX
I
26MHZ_MCLK
LBAND_PAM_IN
HBAND_PAM_IN
BT_CLK
TP1(LBNAD_PAM_IN)
TP2(HBNAD_PAM_IN)