LG FM300 Service Manual page 77

16 15
L
K
J
I
C400
TXG_0
C403
DNI
H
RXG_0
G
RXG_1
C418
TXG_1
F C420
DNI
E
D
C
B
A
16 15
LGE Internal Use Only
14 13 12 11
WI-FI
FL400 FL401 R400
DEA162450BT-2096A1-H RF1200 VTXA0_0
9p 1 3 C401 9p 1 6
DNI
IN OUT RF1 VRF1
2 5
GND RFC
3 4
RF2 VRF2 R401
C404 2450 MHz SFDY0003201
C425 VRXA0_0
DNI
1p L411 SFAC0003001 DNI
880,100MHz
2.7n
C406
C405
9p 9p
L408
1.8n
C410 9p
R403
FL402
RF1200 VRXA1_1
1 6
C412 9p DNI
RF1 VRF1
2 5
GND RFC
R405
3 4
VTXA1_1
RF2 VRF2
DNI
SFAC0003001
880,100MHz
C416 C417
FL403
9p 9p
DEA162450BT-2096A1-H
9p 1 3 C419 9p
IN OUT
C421
SFDY0003201
2450 MHz
C424
DNI
L410
DNI
DNI
L409
DNI
All of components are DNI
20MHz CRYSTAL
R406 0
XTAL_IN
X400
CXC3X200000GHVRG00
4 3 R407
XTAL_OUT
GND2 HOT2
220
1 2
HOT1 GND1
20MHz
C422 C423
EXXY0027801
33p 33p
XTAL_GND
FB401 FB400
600 600
GND
14 13 12 11
10 9 8 7 6
C402 9p
L414
L413
DNI
DNI
MS-156C SW402 ANT400
2 C409 9p 1
COMMON ANT FEEDING
1
G4 G3
2
ENWY0008701 NC
4 3
ALA321C3
L402 L403
SNGF0009601
18n DNI
MS-156C SW403 ANT401
C411 9p
2 1
COMMON ANT FEEDING
1
G4 G3
2
NC
ENWY0008701 4 3
C415 9p
ALA321C3
L404 L405
SNGF0009601
18n DNI
L415 L416
DNI DNI
10 9 8 7 6
- 77 -
5 4 3 2 1
LTE ANTENNA
SW400
G1 C408 15p
C407 100p 1 CN400
G2 ANT
ENZY0030601
ENWY0003901 73251-5450
VA400
L400 L401
DNI 10n
SW401
G1 3.3n
C413 100p L412 1 CN401
G2 ANT
ENZY0030601
ENWY0003901 73251-5450
L406 L407
VA401
DNI 12n
5 4 3 2 1
Copyright © 2011 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
L
K
J
I
H
G
F
E
D
C
B
A
Only for training and service purposes