LG KF690 Service Manual page 104

4.16.4 Checking RF Rx Level
SW101
KMS-507
C100
1
G2
ANT
ANT RF
G1
100p
2
GND1
3
GND2
8
GND3
10
GND4
20
GND5
22
GND6
23
GND7
24
GND8
08 C109
C112
10n 10n
[Fig. 4.17] Schematic of EGSM-900, DCS-1800, PCS-1900 Rx Block
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
FL100
DGM112M02
12
PCN_RX1
13
PCN_RX2
14
PCS_RX1
15
PCS_RX2
16
EGSM_RX1
17
EGSM_RX2
18
GSM850_RX1
19
GSM850_RX2
21
WCDMA_2100
9
PCN_PCS_TX
11
GSM850_EGSM_TX
C114
DNI
[Fig. 4.18] Test Point of Rx Block
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4. TROUBLE SHOOTING
DCS
L104
5.6nH
PCS L105
22nH
L107
5.6nH
L109
18nH
C117
L110
GSM
1p
47nH
L111
18nH
L100
6.8nH
L101 L102
18nH 5.6nH
L103
6.8nH
L106
4.7nH
LGE Internal Use Only