LG HB620 Service Manual page 115

4. TROUBLE SHOOTING
4.15.3 Checking RX level
SW101
KMS-518
C103 33p
2.7nH
C102
L103
15nH
FL101
LSHS-M090UH
5
VC1
4
VC2
3
VC3
C113 1
GND1
33p
2
GND2
C112
9
C111 GND3
33p
11
33p
GND4
12
GND5
14
GND6
15
GND7
17
GND8
18
GND9
25
PGND1
26
PGND2
WCDMA
TP3
RX_WCDMA_2100
LGE Internal Use Only
TP1
VREG_RF_SMPS
C104
L104
0.1u
56nH
10
ANT
6
VDD
7
NC
8
UMTS_TX_RX
13
DCS_PCS_TX
16
EGSM_TX
19
DCS_RX2
20
DCS_RX1
21
PCS_RX2
22
PCS_RX1
23
EGSM_RX2
24
EGSM_RX1
C142
33p
L124
1nH
L121
3.9nH
ACMD-7602
FL104
C159
33p
C161 33p
C165
1.8p
- 116 -
TP2
+VPWR
LDC151G9520Q-359
U104
C162 1nH
SCDY0004101
C166
C167
1p
1p
20dB
R119
PWR_DET
51
R120 R121 R122
51 120 120
8 dB
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C156 C157 C
10u
1u 10