LG -D295 Service Manual page 173

[D295] RF Main (3G & GSM)
[L70+] RF Main (3G & GSM)
ANT1. Main_WCDMA B1/B8, GSM_QUAD
RX_G1800
RX1
RX_G1900
RX2
RF_IN
PRx_G850
TRX3
SKY77573
-31 31
TRX_B1
TRX1
TRX_ B5
TRX4
TRX2
SPDT_IN
SPDT_OUT
LGE Internal Use Only
ANT3. GNSS
SAW
PRx_G1800_G1900
Dual SAW
SAW
PRX_B1
PRX_B8
Duplexer
Option : B1
Duplexer
Option : B8
(oscillator frequency : 19.2MHz)
LNA + Filter
TX_GSM
Dual PAM
TX
PAM Option : PAM Option :
B1/B8, B2/B5, B1/B5
CPL
9dB
Atten
- 173 - Copyright © 2014 LG Electronics. Inc. All right reserved.
5. BLOCK DIAGRAM
PM8110
(32.768KHz)
SLEEP_CLK
MSM8212
BB_CLK
(19.2MHz)
RF_CLK2
19.2MHz
XO_IN _
GNSS_RF_IN
RX_MB3_IN
TX1_OUT
RX LB2 IN RX_LB2_IN
RX_MB1_IN RX_MB2_IN
WTR2605
RX_LB1_IN
W2,4,5 W1,2,5 W1,2,8
GSM GSM GSM
quad quad quad
3 2 1
TX3_OUT
B2/B5 B1/B5 B1/B8
B4 B2 B2
B5 B5 B8
(G850) (G850) (G900)
TX2_OUT
G900 G900 G850
B4 B4 B1 B1 B1 B1
B2 B2 B2
PDET_IN
Only for training and service purposes
WTR260
5
Port map
TX2
TX3
RX_LB1
RX_LB2
RX_MB1 RX MB1
RX_MB2