LG KG270 Service Manual page 35

3. TECHNICAL BRIEF
VINNORP
VINNORN
AUXIN
2V8_VIO
AUXOP_FML
AUXOP_FMR
TXD
RXD
MAIN_MIC
R304
C306
100ohm
C307
0.1u
R307 C309
100ohm
Figure 3-10-4 Main Microphone interface
VMIC
C317
R318
2.2K
0.1u
C318 C319
10u
NA
C320 0.1u
AUXIP
2V8_VIO
C323 10u
C324 10u
HS_DET
Figure 3-10-5 Headset interface
VMIC
R300
1K
R301
C303 C304
39p 10u
2.2K
0.1u
C308
39p
0.1u
R309
2.2K
EAR_MIC
I/O CONNECTOR
VBAT
CN301
VCHARGE
FOR RADIO
FB300 1800
FB301 1800
FB302 1800
2V8_VIO
10
11
RPWRON
12
R324
13
100K
14
DSR
15
16
C327 C328
17
10u 56p
18
(2012)
(10V,Z,Y5V) (50V,J,NP0)
HSEJ-18S04-25R
VBAT
R332 0
BATT_TEMP
CN302
C336 C337
3p 18p
(50V,J,NP0)
(50V,C,NP0)
(TOL:0.25P)
- 36 -
OB4-15L42-C33L
2
1
MIC300
FM_ANT
L300
270nH C322
10p
1608
21
19
FOR RADIO
1
2
2 : AUDIO
3
4
4 : EAR_L
5
5 : EAR_R
6
6 : TXD
7
7 : RXD
8
8 : JACK_D
9
9,10 : BATT
11 : R/ON
12,13 : CHG
20
22
3
2
1