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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
7. CIRCUIT DIAGRAM
VBAT
r301
0ohms
LD310
LD309
LD308
LD307
LD306
LD305
LD304
LD303
LD302
LD301
C346
2.2u
VBAT
Q301
1
2
3
s
mh
o0
65
R337
s
mh
o0
65
R333
s
mh
o0
65
R328
s
mh
o0
65
R329
s
mh
o0
65
R330
1u
C333
s
mh
o0
65
R331
R332
s
mh
o0
65
s
mh
o0
65
R336
R335
s
mh
o0
65
R346
10Kohms
s
mh
o0
65
R334
1u
C334
R345
100ohms
100ohms
R344
R343
100ohms
R342
100ohms
R341
100ohms
15pF
C343
C341
15pF
15pF
C340
15pF
C342
15pF
C338C339
15pF
15pF
C337
100ohms
R340
R339
100ohms
C336
15pF
R338
100ohms
3
2
4
1
VDD
OUT
VSS
NC
VIO_1V8
VIO_1V8
VAUX
VBAT
C335
1u
C345
1u
R347
15K
VBAT
C348
1u
U304
1
7
2
6
10
9
4
8
3
5
IN
C-
GND
C+
D2
D1
EN_SET
OUT
RSET
NC
C344
1u
0.033uF
C315
39pF
C321
R322
2.2Kohms
R318
100ohms
VIO_1V8
100ohms
R320
VMIC
R348
4.7K
R314
1Kohms
R317
2.2Kohms
R350
0ohms
U301
B2
C1
A1
B1
B3
C2
A3
C3
IN-
VDD
IN+
VO+
_SHUTDOWN
VO-
BYPASS
GND
1n
1n
L302
390p
C310
10K
R304
C302
2.2uF
4.7ohms
R303
R309
4.7ohms
20
3
A
V
10K
R305
30K
R302
33n
C304
0.22uF
C307
C313
39pF
VBAT
Fp
93
90
3
C
C322
39pF
0.1uF
C303
MIC301
2
1
C320
0.033uF
6
5
7
4
8
3
9
2
10
1
C
C
V
2B1
1
B1
2A
1A
S2
S1
0
B2
1B0
D
N
G
39pF
C317
80
3
C
Fp
93
C324
DNI
DNI
C325
10
3
A
V
R308
100Kohms
10u
C312
C306
39pF
33n
C305
CN302
21
20
22
19
23
18
24
17
25
16
26
15
27
14
28
13
29
12
30
11
31
10
32
9
33
8
34
7
35
6
36
5
37
4
38
3
39
2
40
1
27p
C328
390p
C301
27p
C319
27p
C314
VRTC
1u
C349
0ohms
R311
0ohms
R349
1u
VA316
LCD_CS_N
KEY_BACKLIGHT
KEY_IN3
KEY_IN2
KEY_IN1
KEY_OUT4
KEY_OUT3
KEY_OUT2
KEY_IN0
KEY_OUT1
END_KEY
SPK_N
SPK_P
RCV_PATH_SEL
RCV_PATH_SEL
LCD_MAKER_ID
MEM_AD_[00]
MEM_AD_[01]
MEM_AD_[02]
MEM_AD_[03]
MEM_AD_[04]
MEM_AD_[05]
MEM_AD_[06]
MEM_AD_[07]
AUD_SPK_AMP_EN
MEM_A_[16]
MAIN_MIC_N
MAIN_MIC_P
MEM_WR_N
HS_L|HS_OUT_L
HS_R|HS_OUT_R
RCV_P
RCV_N
HALL_SENS_DET
KEY_IN4
LCD_RST_N_1.8
W_LED_DRV1
MLED2
MLED2
MLED1
MLED1
MLED
MLED
RCV_SPK_OUT_P
RCV_SPK_OUT_P
RCV_SPK_OUT_N
RCV_SPK_OUT_N
RCV_IN_P
RCV_IN_P
RCV_IN_N
RCV_IN_N
RCV_SPK_N
RCV_SPK_N
RCV_SPK_P
RCV_SPK_P
IND_LED
VIB_P
LCD Connector
KEY BACKLIGHT
(for LCD)
(15K ohm,1/16W,F,1005)
2
UP
1
KEY MATRIX
*
9
4
ECCH0005604
(10 uF,6.3V ,M ,X5R ,TC ,1608 ,R/TP)
MIC
Headset Path
SPEAKER & RECEIVER
7
(2.2uF,10V,10%,X5R,1608)
0
SEL
LEFT
#
6
OK
3
RIGHT
END
EARPHONE PATH SWITCH
ECCH0005603
SEND
8
2CH LED DRIVER
5
MENU
DOWN
(10V)
NOT SMT
NOT SMT