LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 58 -
4.10 Earphone Trouble
TEST POINT
CIRCUIT
CN401
TP2
TP4
TP3
TP1
Figure 4.10
(16
for RADIO
for RADIO
100K
R419
DNI
C410
2V5_VMIC
FB404
C422
1 uF
C419
39p
2V8_VEXT
DNI_
R420
100K
C424
VUSBIN_IO
0.1u
C412
1800
FB403
2.2K
R413
VA401
ULCE0505C015FR
SEVY0007301
22
3
4
5
6
7
8
9
1
10
11
12
13
14
15
16
17
18
19
2
20
21
HSEJ-18S
CN401
ENRY000
R440
050
VA404
R439
0
0
R423
DNI
1.5K
R412
OUT1
6
7
OUT2
2V8_VEXT
EUSY0356701
NCP347MTAFTBG
11
GND_PAD
4
IN2
IN3
5
IN_PAD
12
VA405
050
FB402
1800
100K
R424
C418
39p
VLC14S02050
VA403
10u
C411
C414
VBAT
ECCH0003002
VCHARGE_IO
39p
2V8_VEXT
C409
0.1u
1800
FB401
capacitor
VA406
DNI
C435
SEVY0007301
ULCE0505C015FR
VA402
USB-
USB+
AUXOP_FM_R
AUXON_FM_L
nJACK_DET
nDSR_DET
UART_TX
UART_RX
AUXIP
AUXIN
RPWRON
0.1u
C404
8
1A
1B0
10
1B1
1
2A
5
2
2B0
3
2B1
4
GND
S1
7
S2
6
9
VCC
U402
FSA2268TUMX
EUSY0340301
ECTH0003401
C415
33u
10u
ECTZ0003701
C437
10u
C436
ECTZ0003701
100K
R407
2V8_VEXT
33u
C416
ECTH0003401
HEADSET_RADIO_SEL
AUXOP_FM_R
AUXON_FM_L
AUXON
AUXOP
HP_R
HP_L
TP2
TP3
TP4
TP1
Summary of Contents for KP110
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