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7. CIRCUIT DIAGRAM
16
15
14
3.5phi HEADSET
L
1V8_VDD
R248
1M
S
G
Q201
1V8_VDD
D
R247
K
100K
R208
10
DNI
JACK_DETECT
FB207
L204
HP_ROUT
0.1uH
J
L203
HP_LOUT
0.1uH
R215
C235
C244
DNI
DNI
DNI
R240
EAR_GND
0
I
1V8_VDD
R241
100K
R222
HOOK_DETECT
OUT
IN-
47ohms
4
3
GND
2
VCC
IN+
H
C236
5
1
U204
120pF
C242
560pF
HS_MIC_N
C240
10pF
HS_MIC_P
G
C241
560pF
R239
0
F
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
VBAT
E
D
C212 1u
C2
EPN
C213 1u
IN1-
C1
EPP
IN1+
U202
C245 1u
D2
HSR
IN2-
C246 1u
D1
HSL
IN2+
C247 1u
D3
IN3-
C248 1u
C3
IN3+
C
C210
I2C_SCL
2.2u
I2C_SDA
B
A
16
15
14
LGE Internal Use Only
13
12
11
10
C239
47p
L202
FM_ANT
0.1uH
C237
VA207
L201
0.1uH
DNI
R237
EAR_GND
0
2
M6
1800
FB204
3
M1
FB211
M4F
1800
4
M3
5
FB205
1800
M4
6
M5
1
J201
R223
DNI
VA204
VA205
VA206
VA203
VAUX
R249
100
VHSMIC
R226
2.2Kohms
0.022uF
C203
2.2uF
FB201
120
C207
C208
2.2u
0.1u
C5
OUT+
RCV_SPK_P
D5
OUT-
RCV_SPK_N
A2
C215
C214
HPL
HP_LOUT
A1
47p
47p
HPR
HP_ROUT
C216
C217
0.1u
0.1u
B5
C222 2.2u
CPVDD
A3
C219 2.2u
CPVSS
R201
R204
A4
20
20
CP
C218 2.2u
A5
CN
1V8_VDD
FB210
220
C211
C209
2.2u
0.1u
R205
EAR_GND
0
13
12
11
10
9
8
7
6
MUIC
SPK
47pF
C221
FB208
120
CN203
RCV_SPK_P
1
C206
100pF
2
FB209
120
RCV_SPK_N
C220
VA201
VA202
47pF
MICROPHONE
VMIC
G4
6
PWR
5
G3
4
G2
3
G1
C147
0.1u
2
MIC_P
OUT
1
MIC201
C260
C252
C254
C253
VA209
VA208
39p
39p
39p
10u
REPLACE WITH BSE
C148
0.1u
MIC_N
C261
VA215
39p
MIC_GND
CHARGING IC
VBUS_USB
VBAT
1V8_VDD
R211
100K
11
PGND
1
10
VIN
BATT
2
9
ISET
U201
PGB
3
8
_EOC
GND1
CHGSB
4
7
LDO_OUT
LDO
GND2
5
6
IEOC
EN_SET
CHG_EN
C224
C225
R227
R228
1u
1.2K
C223
C255
0.1u
3.9K
0.1u
(25V)
1u
(10V)
Ichg=530/Riset=481.8mA
Ieoc=Rieoc/200=19.5%(93.95mA)
5PIN CONNECTOR
VBUS_USB
CN201
6
8
10
12
14
( USB & TA &UART )
1
2
MUIC_DM
3
MUIC_DP
MUIC_ID
4
5
7
9
11
D202
D201
13
SC201
15
1
2
9
8
7
6
- 124 -
5
4
3
2
1
1V8_VDD
VBAT
VBUS_USB
C234
C228
0.1u
0.1u
(10V)
R212
R214
(25V)
2.2K
DNI
D2
D5
BAT
VB
R216
1
A4
C5
USB_DM
DN1
COMN1
MUIC_DM
R217
1
A5
B5
MUIC_DP
USB_DP
DP2
COMP2
R203
1
B3
B4
FB202
1000
UART_RX
U203
MUIC_ID
U1
UID
R202
1
A3
UART_TX
U2
B1
R209
2.2K
RES
A1
MIC
C231
C230
2.2u
D4
D1
AUD1
CAP
1.5n
D3
AUD2
C229
2.2u
C4
GND
A2
C3
ISET
IC
I2C_SCL
I2C_SDA
MUIC_INT
BATTERY CONNECTOR
VBAT
1V8_VDD
CN202
R206
(1%)
51K
1
R213
10
4
2
(1%)
BAT_TEMP
3
C201
R210
(1%)
100K
27p
C263
C232
C233
C226
C227
(5%)
33u
10u
0.1u
39p
10u
need to replace to 1%
u-SD CARD
VMMC
FB206
600
R231 R232
R230
R234
R235
R233
S201
47K
47K
47K
47K
47K
47K
GND
USD_D2
DAT2
USD_D3
CD_DAT3
USD_CMD
CMD
VDD
USD_CLK
CLK
R229
VSS
USD_DET
CARD_DETECT
47ohms
USD_D0
DAT0
USD_D1
DAT1
COVER_DETECT1
1V8_VDD
C249 C250
R236
DNI
2.2uF
100Kohms
C251
0.001uF
5
4
3
2
1
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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