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7. CIRCUIT DIAGRAM
16
15
14
MICROPHONE
L
VMIC
R240
1K
C221
C222
R201
DNI
10u
2.2K
C203
33n
K
R237
100
MIC_P
C224
C223
DNI
47p
C204
33n
R238
100
MIC_N
R269
C239
C240
2.2K
DNI
DNI
J
FOLDER SW
1V8_VDD
I
U203
R235
1
4
SLIDE
OUT
VDD
2
3
22
GND
NC
VA203
C202
1u
H
KEY BACKLIGHT
VBAT
LD202
LD201
G
VA204
VA205
F
3
R222
1.2K
2
Q201
1
C249
R268
VA226
0.1u
10K
E
5PIN CONNECTOR
( USB & EAR MIC & TA &UART )
D
VBUS_USB
CN201
6
MUST BE PLACED NEAR IO CONNECTOR
8
10
C
12
14
ZD204
1
MUIC_DM
FB206
600
2
MUIC_DP
FB207
600
3
MUIC_ID
4
5
7
9
11
13
15
SC201
B
1
2
A
16
15
14
LGE Internal Use Only
13
12
11
10
MUIC
1V8_VDD
R226
R209
2.2K
DNI
MIC201
C233
27p
C272
2
C236
22n
R220
HS_MIC_N
USB_DM
1
18p
R233
USB_DP
C226
C213
R264
39p
10u
UART_RX
R229
R265
UART_TX
VA206
VA201
2.2K
C234
22n
HS_MIC_P
R262
HP_LOUT
R263
HP_ROUT
C205
C228
C235
C237
27p
1.5n
C274
C273
DNI
DNI
390p
390p
I2C_SCL
I2C_SDA
MUIC_INT
AMP_SUBSYSTEM
VBAT
C251
C250
DNI
0.1u
FB204
120
FB205
120
C5
OUT+
D5
OUT-
1.5n
C253
220n
C2
IN1-
EPN
C252
220n
C1
IN1+
EPP
A2
U206
HPL
C254
1u
D2
A1
HSR
IN2-
HPR
C255
1u
D1
HSL
IN2+
C267
220n
D3
IN3-
C268
220n
C3
B5
IN3+
CPVDD
A3
CPVSS
A4
CP
A5
R270
CN
C259
2.2u
C260
C269
2.2u
2.2u
1V8_VDD
I2C_SCL
C270
I2C_SDA
2.2u
KEY_BL_EN
C271
C257
2.2u
0.1u
SIM_CONNECTOR
2V85_VSIM
2V85_VSIM
R232
R216
J201
4.7K
DNI
4
1
C217
270p
C5
C1
FM_ANT
5
2
C6
C2
6
3
SIM_DATA
C7
C3
10
7
GND4
GND1
L201
C242
9
8
C241
ZD201
GND3
GND2
C227
120n
10p
22p
0.1u
DNI
ZD201, ZD202, ZD203 is DNI deafultly
13
12
11
10
9
8
7
6
VBAT
KEYPAD INTERFACE
VBUS_USB
C244
C225
0.1u
U205
0.1u
(10V)
(25V)
D2
D5
BAT
VB
1
A4
C5
MUIC_DM
DN1
COMN1
1
A5
B5
DP2
COMP2
MUIC_DP
1
B3
B4
FB203
1000
MUIC_ID
U1
UID
1
A3
U2
B1
R217
100
R219
2.2K
RES
A1
C232
MIC
C231
1u
10
L202
18n
D4
D1
82p
AUD1
CAP
10
D3
AUD2
C4
GND
C265
C266
KP_IN0
A2
C3
DNI
DNI
ISET
IC
C201
DNI
KP_IN1
KP_IN2
KP_IN3
KP_IN4
RCV_SPK_P
RCV_SPK_N
C263
C264
KP_OUT0
1.5n
KP_OUT1
KP_OUT2
HP_LOUT
HP_ROUT
KP_OUT3
KP_OUT5
C261
C262
0.1u
0.1u
R271
20
20
CHG_EN
BATTERY CONNECTOR
VBAT
1V8_VDD
R210
CN202
51K
1
FB202
1800
SIM_RST
2
SIM_CLK
4
3
ZD202
ZD203
C229
C230
DNI
22p
DNI
22p
VA225
R221
C218
C220
100K
(5%)
1u
0.1u
39p
need to replace to 1%
9
8
7
6
- 124 -
5
4
3
2
CN203
R267
150
1
R266
150
2
R236
150
3
4
VA213
VA214
VA215
RIGHT
SW201
SEND
KB204
KB201
KB203
R274
150
DOWN
NUM 1
NUM 2
NUM 3
VA220
KB208
KB205
KB206
KB207
R275
150
VA221
OK
NUM 4
NUM 5
NUM 6
KB213
KB210
KB211
KB212
R276
150
VA222
LEFT
NUM 7
NUM 8
NUM 9
KB218
KB215
KB216
KB217
R277
150
VA223
STAR
NUM 0
SHARP
SW200
KB223
KB220
KB221
KB222
R278
150
ZD205
VA224
R280
150
R281
150
R282
150
R279
150
R283
150
VA212
VA209
VA210
VA211
u-SD CARD
VMMC
R286
DNI
CHG_EN1
R287
1
CHG_EN2
R249
R250
R246
R247
R248
J202
47K
47K
47K
47K
47K
GND
USD_D2
DAT2
USD_D3
CD_DAT3
USD_CMD
CMD
VDD
R258
CLK
30
VSS
CARD_DETECT
DAT0
C245
DAT1
1u
COVER_DETECT1
CHARGING IC
VBUS_USB
VBAT
(1%)
BAT_TEMP
11
PGND
1
10
VIN
BATT
2
9
ISET
U202
PGB
3
8
GND1
CHGSB
4
7
LDO_OUT
LDO
GND2
5
6
(1%)
IEOC
EN_SET
R208
R211
C212
C216
C215
0.1u
1u
1u
1300
5.1K
5
4
3
2
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1
L
K
SEARCH
J
KB209
UP
KB214
I
MENU
KB219
H
G
VA208
F
R251
47K
E
USD_CLK
USD_D0
USD_D1
D
1V8_VDD
C
R223
100K
_EOC
CHG_EN
R285
C247
0.1u
DNI
B
A
1
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