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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.3.2 Checking WCDMA PAM
Block
• PAM control signal
1. TP1 : +VPWR : UMTS PAM Main Voltage ( 3V.2 < +VPWR < 4.2V)
2. TP2 : WCDMA 850 PAM block Enable signal ( Over 2.7V)
3. TP3 : WCDMA 2100 PAM block Enable signal ( Over 2.7V)
L1034
1nH
1000p
C1096
C1111
1000p
NA
L1035
2
4
5
3
1
Q1001
KRX102E
VMODE_PCS
24
VREG_CELL
3
1
VREG_PCS
18
NC7
PGND
25
5
RFIN_CELL
2
RFIN_PCS
RFOUT_CELL
14
RFOUT_PCS
16
6
VCC1_CELL
VCC1_PCS
22
VCC2_CELL1
9
10
VCC2_CELL2
11
VCC2_CELL3
21
VCC2_PCS1
20
VCC2_PCS2
VCC2_PCS3
19
23
VCC_BIAS
VMODE_CELL
4
RF5184
U1003
NC1
7
8
NC2
NC3
12
13
NC4
15
NC5
17
NC6
VREG_RF_2.85V
2200p
1.8nH
L1030
2200p
C1110
18nH
4.7u
C1101
2200p
C1100
C1105
2200p
TP3
TP2
TP1
[Fig.] the schematic of WCDMA PAM Block
[Fig.] Test Point of WCDMA PAM Block
TP1
TP2
TP3
Z3X-BOX.COM
Содержание KF390
Страница 178: ...Note Z 3 X B O X C O M ...
Страница 179: ...Note Z 3 X B O X C O M ...