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7. CIRCUIT DIAGRAM
1
2
2V8_VEXT
U302
A
1
3
VDD
VOUT
4
2
NC
GND1
R301
6
5
JACK_LDO_EN
CE
GND2
4.7K
R1114D251D
R302
C303
C304
EUSY0299301
1u
0.1u
100K
B
FB302
EAR_MIC_IN
EAR_MIC
0
2V8_VEXT
C300
33 uF
HEADSET_R
U300
ECTH0004804
C
R300
0
6
1
SPK_SEL
S
B1
FM_AUDIO
5
2
VCC
GND
4
3
A
B0
AUXOP
NLAS4157DFT2G
R325
C302
EUSY0263301
1u
NA
U300
SPK_SEL
STATE
L
A-B0
H
A-B1
D
VBAT
VBAT
VIBRATOR
R318
R319
R320
47K
0
0
R321
Q300
100ohm
R322
VIBRATOR
20K
D300
EMZ2
C329
E
1SS352-TPH3_F
4.7u
R324
7.5K
1
2
LGIC(42)-A-5505-10:01
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3
4
5
EAR-MIC
2V6_JACK
C305
C306
1u
15p
2V6_JACK
R305
1K
C307
R306
R307
EAR_MIC
AUXIN
1.5K
100ohm
0.1u
C308
C309
39p
22uF
2012
ECTH0004806
R308
AUXIP
100ohm
C313
C314
C315
47n
27p
39p
2V8_VEXT
AUX_ON
U301
AUXON
2
5
NO1
IN1
HEADSET_EN
10
7
HEADSET_R
NO2
IN2
1
3
MMI_PIN4
VCC
COM1
R326
C301
9
MMI_PIN5
COM2
11
4
1u
PGND
NC1
USC4
NA
6
8
USC5
USC5
GND
NC2
MAX4764ETB
U301
HEADSET_EN
STATE
0
USC
1
HEADSET_SPK
BAT CONNECTOR
CN301
1
5
L301
R323
1K
2
OUT300
4
27nH
3
HSBC-3P-23
L302
C331
ENZY0014301
OUT301
C330
27p
27nH
VA302
100u
C335
EVL5M02200
27p
3
4
5
6
7
8
SLIDE
2V8_VEXT
R317
51K
SLIDE
1
VDD
OUT
U304
C327
C328
A3212EELLT-T
SIM_DATA
0.1u
G1
G2
10p
FM_ANT
FL300
EVFC5S03Q033
9
1
USC0
INOUT_B1
INOUT_A1
8
2
MMI_PIN4
INOUT_B2
INOUT_A2
7
3
MMI_PIN5
INOUT_B3
INOUT_A3
6
4
JACK_DETECT
INOUT_B4
INOUT_A4
SFEY0014701
EAR_MIC_IN
USC2
USC1
FL301
EVFC5S03Q033
9
1
INOUT_B1
INOUT_A1
RPWRON
R316
10K
8
2
INOUT_B2
INOUT_A2
DSR
DBUGTX
7
3
DEBUG_TX
INOUT_B3
INOUT_A3
DBUGRX
6
4
DEBUG_RX
INOUT_B4
INOUT_A4
SFEY0014701
VA300
PG05DBTFC
BATT_TEMP
VBAT
C332
C333
C334
1u
1u
1u
6
7
- 91 -
9
10
SIM CONNECTOR
2V85_VSIM
2V85_VSIM
R315
R303
J300
15K
NA
GND4
GND3
9
8
GND5
GND2
10
7
IO
CLK
SIM_CLK
6
3
VPP
RST
SIM_RST
5
2
GND1
VCC
4
1
C318
C319
C316
C317
HSSC-6p-23
NA
ENSY0014601
1000p
NA
220n
VCHARGE
C312
L300
27p
100nH
R309
2V8_VEXT
30K
CHG_DET
VBAT
R311
30K
CN300
R313
R314
R312
100K
100K
100K
21
19
1
2
1 : FM_ANT
USC0_TP
3
2 : AUDIO
4
3 : USC0
FB301
0
5
4 : USC4(RTS), EAR_L
TX
6
RX
7
5 : USC5(CTS), EAR_R
8
6 : USC2(TX_DATA)
9
7 : USC1(RX_DATA)
10
8 : JACK_DET
11
12
9,10 : BATT
13
11 : R/ON
14
12,13 : CHARGE
15
14 : DSR
16
17
15 : VUSB
18
16 : DEBUG_TX
1608
2012
17 : DEBUG_RX
20
VA301
C320
18 : GND
C321
C322
C323
C324
C326
22
1u
2.2u
10u
30p
30p
0.1u
HSEJ-18S04-25R
PG05DBTFC
ENRY0006401
LG Electronics Inc.
LGE Internal Use Only
A
C
D
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