LG HB620 Service Manual page 123

4. TROUBLE SHOOTING
4.16.4 Checking RF Rx Level
FL101
LSHS-M090UH
5 10
VC1 ANT
4
VC2
3 6
VC3 VDD
7
NC
1
GND1
2 8
GND2 UMTS_TX_RX
9 13
GND3 DCS_PCS_TX
11 16
GND4 EGSM_TX
12
GND5
14 19
GND6 DCS_RX2
15 20
GND7 DCS_RX1
17 21
GND8 PCS_RX2
18 22
GND9 PCS_RX1
25 23
PGND1 EGSM_RX2
26 24
PGND2 EGSM_RX1
[Fig. 4.20] Schematic of EGSM-900, DCS-1800, PCS-1900 Rx Block
LGE Internal Use Only
[Fig. 4.21] Test Point of Rx Block
- 124 -
L105
DCS L106
TP3
39nH
L108
L109
TP2
PCS L110
NA
L113
L114
L115
TP1
GSM
NA
L117
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5.6nH
L107
27nH
5.6nH
6.8nH
L111
12nH
6.8nH
27nH
L116
27nH
27nH